--- title: "Best AI running coach apps compared: Runna, Garmin Coach, Nike Run Club | Retenna" description: "Runna, Garmin Coach, Nike Run Club, Strava, Apple Watch and TrainAsONE compared as AI running coaches: what each plans, adapts and costs, and what they miss." url: https://retenna.ai/articles/ai-running-coach-app updated: 2026-10-25 --- Guide · Running # The best AI running coach apps compared, and a coach that trains you for the week you’re having Runna, Garmin Coach, Nike Run Club, Strava, Apple Watch and TrainAsONE all promise to get you to the start line. Here’s what each one really plans, adapts and costs, and what changes when your running coach can see the rest of your week. By **Trent**, founder of Retenna 25 October 2026 28 min read **Last checked 25 October 2026 How we checked** Facts come from each maker’s own website, help pages, press releases and App Store listing, and link to their source; the few third-party sources are labelled. Prices are US prices and ratings are from the US App Store on 25 October 2026; Strava’s pricing page showed us only local prices, so its US prices come from its App Store listing. Run recording, workouts sent to a watch and weather features were checked again on 26 October. Some Strava details are from our 22 October check. This is research, not hands-on testing. Retenna is our product and isn’t out yet: where we describe it, it’s what it’s built to do, and its examples show how it works, not test results. In 30 seconds - **For a race plan that adapts:** Runna, $119.99 a year, syncs with Garmin, Apple Watch, COROS and more, and builds in strength. Garmin Coach is free if you run with a Garmin, and reads your sleep and recovery. - **For free:** Nike Run Club’s guided runs and plans. **For AI analysis of runs you’ve done:** Strava. **For a voice in your ear:** Apple Watch’s Workout Buddy. **For an AI plan with a free tier:** TrainAsONE. - **The gap:** none of the six says it reads your calendar, so none can see the night away, the late finish or the hike your friends have planned. - **What Retenna adds:** race plans from 5 km to marathon built back from race day, runs it records itself, and paces, intervals and heart-rate targets that change as you run, all around your whole week. After two short nights, intervals become an easy 5 km; on a hot Saturday, the long run moves to 07:00. - **It learns you, inside your rules:** every change comes with the reason and an Undo. Not out yet: [early access is open now](https://retenna.ai/#join-final). ## Why most running apps fall short A training plan is a promise about weeks you haven’t lived yet. Intervals on Monday, legs on Friday, the long run on Saturday. Then two nights are short, work sends you away for a night and friends plan a five-hour hike for Saturday, and the plan either breaks or has you running tired. The best running apps now adapt, and some do it well. They move a missed run, slow your paces in the heat, or ease off when your watch says you haven’t recovered. But they adapt to your running. They can’t see the week around it. A good running coach, human or AI, changes today’s run so the whole week still works and race day stays on track. ## What a good AI running coach knows - **Your race and your goal.** A first 10 km, a half marathon in seven weeks, or simply running three times a week without getting hurt. - **How your running is going.** What easy and hard feel like for you now, and how quickly that’s changing. - **How you recover.** What two short nights do to a hard session, and how long your legs take to come back after leg day. - **Your week.** Early starts, late finishes, a night away, a big day at work, and the hike your friends have planned. - **Everything else you do.** Strength sessions, a day on your feet and a five-hour hike are training too, and should count. - **Your kit.** How far your trainers have run, and how long you like to break in a new pair. - **What you actually stick to.** If you tend to stop after three runs a week, a plan with five is a plan you’ll break. ## What an AI running coach should do for you Knowing all that only matters if it turns into a week you can run. A good AI running coach should: - **Plan back from race day**, from a first 5 km to a marathon, with runs, long runs, rest and strength fitted to the days you can actually train. - **Fit every run to the day.** After two short nights, today’s intervals become an easy 5 km. - **Count what you already do.** A five-hour hike with friends is your long run, so Sunday becomes rest. - **Move sessions around what’s coming.** Leg day moves to Tuesday, so your legs are fresh for Saturday. - **Travel with you.** Intervals on the hotel treadmill, with your kit already on the packing list. - **Protect your big days.** A walk instead of a hard session the night before an interview. - **Get your strength work right too.** Every set, rep and weight planned, and changed during the session when it isn’t going to plan. - **Look after the rest.** Dinner ready after a late session, a rest day after a long one, and new trainers in time to break them in. - **Coach you during the run.** Ease the pace, lengthen a recovery or lower a heart-rate target when today isn’t going to plan, straight on your watch. - **Watch the weather.** Move the long run before the heat, and the track session away from the rain. - **Explain itself.** Every change with its reason, and an Undo. ## The top AI running coach apps at a glance We looked at six of the running apps people use most to plan or coach their runs: the biggest plan-led app, the free coaching most runners already have on their wrist or phone, Strava, and one smaller app that describes itself as AI-first. It’s an editorial pick, not a ranking, and each one is good at something different. US prices and App Store ratings, checked 25 October 2026. Retenna is ours and not out yet: its row shows what it’s built to do. | App | Cost | Where | Best at | | --- | --- | --- | --- | | Runna | First week free, then $19.99 a month or $119.99 a year | iPhone, Android, Apple Watch; syncs with Garmin, COROS, Fitbit and Suunto | Race plans from 5 km to ultra that adapt to how you’re running, with strength sessions built in | | Garmin Coach | Free, with a compatible Garmin watch | Garmin Connect app on iPhone and Android | Daily workouts that change with your performance, sleep and recovery | | Nike Run Club | Free | iPhone, Android, Apple Watch | Audio-guided runs and training plans, with coaches in your ear | | Strava | Free; subscription $11.99 a month or $79.99 a year; with Runna $149.99 a year | iPhone, Android, Apple Watch, web | Recording and sharing your runs, with AI analysis of each one | | Apple Watch | Built into the Workout app | Apple Watch, with an iPhone | Interval workouts you build, and a spoken Workout Buddy | | TrainAsONE | Free plan; Premium $9.99 a month or $101.99 a year | iPhone, Android, web and Garmin watches | An AI plan that recalculates after missed runs and personal bests | | Retenna Ours | Free early access, with founding pricing for life | Coming to iPhone, Android and the web | Race plans from 5 km to marathon, changed as you run and around the week you’re having, with every other expert you need | ## App by app ### Runna Cost First week free; $19.99 a month or $119.99 a year Where iPhone, Android, Apple Watch App Store [4.8 from 35K ratings](https://apps.apple.com/us/app/runna-running-plans-coach/id1594204443) [Runna](https://www.runna.com/) is the plan-led running app most runners have heard of, and since 2025 it has been [owned by Strava](https://press.strava.com/en-gb/articles/strava-to-acquire-runna-a-leading-running-training-app). It builds a plan for anything from 5 km to a 50 km ultra, or a custom plan of 6 to 26 weeks, around your experience and the days you can train, with strength, mobility and Pilates sessions that fit around your runs. Its [features page](https://www.runna.com/features) says your plan adapts to your performance, and workouts sync to Garmin, COROS, Fitbit, Suunto and Apple Watch, where its [App Store listing](https://apps.apple.com/us/app/runna-running-plans-coach/id1594204443) says you can follow and track each run live, and to Strava. Runna says it’s available in more than 180 countries ([January 2026](https://www.runna.com/press/runna-introduces-updated-beginner-running-plans-for-2026)). **How it adapts**Miss more than three workouts or a week, and [Plan Realignment](https://support.runna.com/en/articles/10026375-how-to-use-the-plan-realignment-feature) offers to rearrange them. Mileage Insights suggests changes when you’re not keeping to the plan. [Not Feeling 100%](https://support.runna.com/en/articles/13531498-how-to-use-not-feeling-100) dials training back for 3 to 14 days when you tell it you’re unwell or tired, [Holiday Mode](https://support.runna.com/en/articles/10225691-how-to-adjust-your-plan-around-holidays) reshapes the plan around a trip you add, and [Adapt for Heat](https://support.runna.com/en/articles/15647483-how-does-runna-adapt-my-workouts-for-heat-and-humidity), rolling out gradually, suggests slower paces on hot days for you to accept. **Worth knowing**Most of that adapting starts with you: you tell it you’re ill, add the holiday or accept the change. Runna’s help pages say it [can’t read your Google, Apple or Outlook calendar](https://support.runna.com/en/articles/8601606-syncing-runna-to-your-calendar-scheduling-your-workouts); it can only add your workouts to it. Its beginner plans [became part of the paid subscription](https://support.runna.com/en/articles/15396688-new-to-running-return-to-running-and-path-to-parkrun-plans) on 5 June 2026. Strava sells a [Strava + Runna bundle](https://support.runna.com/en/articles/11626438-strava-runna-subscription-guide) for $149.99 a year. Its App Store privacy label lists identifiers as data that may be used to track you. ### Garmin Coach Cost Free; Garmin Connect+ adds extras Where Garmin Connect on iPhone and Android, with a Garmin watch App Store [4.4 from 59K ratings](https://apps.apple.com/us/app/garmin-connect/id583446403) (Garmin Connect) [Garmin Coach](https://www.garmin.com/en-GB/blog/five-ways-to-use-garmin-coach-on-your-watch/) is Garmin’s free set of training plans in the Garmin Connect app, and there are two kinds for runners. For the expert plans, you pick your race goal, your level and one of three coaches: Olympian Jeff Galloway, physiologist Greg McMillan or physical therapist Amy Parkerson-Mitchell, and the workouts adjust to your performance. [Garmin Run Coach](https://www.garmin.com/en-US/newsroom/press-release/wearables-health/train-smarter-with-personalized-garmin-coach-training-plans-that-can-adapt-to-help-you-reach-your-goals/) builds a plan to your race date or goal and the days you want to train, with daily workouts that change with your performance, recovery and health. Step-by-step workouts [sync to your watch](https://www.garmin.com/en-US/newsroom/press-release/sports-fitness/2018-train-for-a-5k-with-garmin-coach-free-adaptive-training-plans-from-garmin/), which records the run. Garmin says the plan adapts when you finish a workout, skip a run because you’re ill or cut one short in extreme heat, and its [guide for runners](https://www.garmin.com/en-US/blog/fitness/garmin-training-plans-for-runners/) gives the example of a lighter day after a poor night and a hard workout. **Worth knowing**You need a compatible Garmin watch, and Garmin suggests wearing it as much as possible, including in bed, so the plan can use your VO2 max, lactate threshold, sleep and training history. Strength comes from Garmin Coach’s separate strength plans, and reading your calendar or planning around trips isn’t mentioned. [Garmin Connect+](https://www.garmin.com/en-US/newsroom/press-release/wearables-health/elevate-your-health-and-fitness-goals-with-garmin-connect/), launched in March 2025 at $6.99 a month or $69.99 a year, adds AI insights (in beta at launch) and extra coaching videos for Run Coach plans, and Garmin says everything already in Garmin Connect stays free. ### Nike Run Club Cost Free Where iPhone, Android, Apple Watch App Store [4.8 from 420K ratings](https://apps.apple.com/us/app/nike-run-club-running-coach/id387771637) [Nike Run Club](https://www.nike.com/nrc-app) is free and has the most App Store ratings of any app here. It tracks your runs, and its [App Store listing](https://apps.apple.com/us/app/nike-run-club-running-coach/id387771637) describes audio-guided runs from Nike coaches, from treadmill and speed runs to mindful ones, and training plans for a 5 km, 10 km, half marathon or marathon in selected countries. Nike’s own [guide to the app](https://www.nike.com/a/running-goals) describes plans such as an 8-week 5K and a 14-week half marathon. It works with Apple Watch and Apple Health, tracks the distance on your shoes, and has challenges to run with friends. **Worth knowing**It’s the warmest of the six, with a coach’s voice in your ear, but it’s a structured plan more than an adaptive coach: changing your plan for missed runs, your sleep or your week isn’t mentioned, and the listing doesn’t describe any AI. Nike’s guide to its plans was last updated in 2022. ### Strava Cost Free; $11.99 a month or $79.99 a year Where iPhone, Android, Apple Watch, web App Store [4.8 from 379K ratings](https://apps.apple.com/us/app/strava-run-bike-walk/id426826309) Strava is where a great many runners record and share their runs, with [more than 195 million users](https://www.whoop.com/us/en/press-center/strava-overhauls-strength-experience-with-expanded-partner-ecosystem-new-workout-log-and-muscle-maps/). Its AI feature, [Athlete Intelligence](https://support.strava.com/en-us/articles/15401629-athlete-intelligence-on-strava), explains each run, trail run, ride, walk or hike using your activity, health and location data and your recent history, and “Say More” goes deeper on your pace, heart rate and zones. For a plan, Strava points you to Runna, which it owns, sold together as a $149.99-a-year bundle. **Worth knowing**Athlete Intelligence needs a subscription or a trial, and it analyses what you’ve done rather than planning what’s next. Adult profiles and activities can be public by default, and Strava’s [privacy policy](https://www.strava.com/legal/privacy) allows using data to train AI models, de-identified where possible. There’s more on Strava in [our AI personal trainer guide](https://retenna.ai/articles/ai-personal-trainer-app). ### Apple Watch Cost Built into the Workout app Where Apple Watch, with an iPhone Workout Buddy English and Spanish; needs Apple Intelligence If you run with an Apple Watch, its Workout app does more than record. You can build [custom workouts](https://support.apple.com/guide/watch/create-a-custom-workout-apd66fcd5c5c/watchos) with a warm-up, repeating work and recovery intervals and a cool-down, with heart-rate alerts, or make them in the Fitness app on iPhone and [let them sync to the watch](https://support.apple.com/guide/iphone/customize-a-workout-iphbcd56be45/ios). [Workout Buddy](https://support.apple.com/guide/watch/use-workout-buddy-apd65c7938e6/watchos), an Apple Intelligence feature, talks to you through your headphones as you run, using your history and what’s happening now: milestones such as your fastest 10K, how your pace and distance are going, and a summary at the end. [Training load](https://support.apple.com/guide/watch/track-your-training-load-apde4c07a6cf/watchos) compares your last 7 days with the 28 before, so you can see when you’re doing too much. **Worth knowing**It doesn’t build or change a plan for you: you make the custom workouts, and training load shows the strain rather than changing what’s next. Workout Buddy needs an Apple Intelligence iPhone, Bluetooth headphones and English or Spanish, and Apple Intelligence isn’t available everywhere. For guided classes and plans, Apple Fitness+ is in [our personal trainer guide](https://retenna.ai/articles/ai-personal-trainer-app). ### TrainAsONE Cost Free plan; Premium $9.99 a month or $101.99 a year Where iPhone, Android, web, Garmin watches App Store [3.8 from 46 ratings](https://apps.apple.com/us/app/trainasone-ai-running-plans/id1541355896) [TrainAsONE](https://trainasone.com/) calls itself an AI running app. It builds a plan from your own data and goal, says its AI is trained on more than 100 million kilometres of runs, and recalculates your whole future plan when you skip a session or set a personal best. You tell it when and for how long you can train, and it watches your training load for signs of fatigue. Its app records runs with voice guidance, according to its [App Store release notes](https://apps.apple.com/us/app/trainasone-ai-running-plans/id1541355896), and it imports runs from Garmin, Apple Watch, COROS, Suunto, Polar, Strava and others. It can send your workouts to a Garmin watch ([pricing](https://trainasone.com/pricing)), and Premium adds heart-rate workouts, several goals at once, and adjustments for weather and hills. **Worth knowing**It’s much smaller than the others, with only a few dozen US App Store ratings. The free plan shows your next 7 days in full detail. On its own website Premium is £9.99 a month or £99 a year. Strength, sleep and reading your calendar aren’t mentioned. ## Where Retenna’s trainer goes further Every app above is about running, and several are very good at it: Runna at race plans with strength built in, Garmin Coach at reading your recovery from your watch, Nike Run Club at coaching you for free, TrainAsONE at recalculating after every run. But each one stops at your running. None of them says it reads your calendar, so none can know that you’re away on Wednesday night, that Saturday is a five-hour hike, or that dinner on Tuesday will be late. Checked 25 October 2026 against each maker’s own pages. Retenna is ours and not out yet: its column shows what it’s built to do. | What it does | Retenna | Runna | Garmin Coach | Nike Run Club | Strava | Apple Watch | TrainAsONE | | --- | --- | --- | --- | --- | --- | --- | --- | | A race plan built back from race day | Yes | Yes | Yes | Partly | Partly | Not mentioned | Yes | | Records your runs, by GPS or from your watch | Yes | Yes | Yes | Yes | Yes | Yes | Yes | | Sends each workout to your watch | Yes | Yes | Yes | Not mentioned | Not mentioned | Yes | Partly | | Changes the plan after missed or extra runs | Yes | Yes | Yes | Not mentioned | Not mentioned | Not mentioned | Yes | | Adjusts for your sleep and recovery | Yes | Partly | Yes | Not mentioned | Not mentioned | Not mentioned | Partly | | Moves or eases runs for heat or rain | Yes | Partly | Partly | Not mentioned | Not mentioned | Not mentioned | Yes | | Plans around your real calendar | Yes | Partly | Partly | Not mentioned | Not mentioned | Not mentioned | Partly | | Strength sessions planned with your runs | Yes | Yes | Partly | Not mentioned | Not mentioned | Not mentioned | Not mentioned | | Changes your pace, intervals or heart-rate targets during a run | Yes | Not mentioned | Not mentioned | Not mentioned | Not mentioned | Not mentioned | Not mentioned | | Plans your meals and rest around training | Yes | Not mentioned | Not mentioned | Not mentioned | Not mentioned | Not mentioned | Not mentioned | | A full space for the rest of your life too | Yes | Not mentioned | Not mentioned | Not mentioned | Not mentioned | Not mentioned | Not mentioned | Yes The maker documents it. Partly A lighter version: a set plan rather than one built around you; days, holidays or times you set in the app rather than your real calendar; a change made only when you tell it or accept it, or one made after the run; fatigue read from your training rather than your sleep; one brand of watch only; or a separate app or plan. Dash Not mentioned in the maker’s own materials. That doesn’t prove it can’t. That’s the difference that matters for runners. A plan only works if each run fits the day around it, and a coach that can only see your runs has to guess the rest. Retenna’s personal trainer shares one picture of your life with your [nutritionist](https://retenna.ai/articles/ai-nutritionist-app), your [wellbeing coach](https://retenna.ai/articles/ai-sleep-coach-app), your planner, your stylist and your personal shopper, so it doesn’t have to guess. It sees Saturday’s hike in your friends’ shared plan and counts it as your long run. It sees the night away in your booking and puts intervals on the hotel treadmill, with your kit on the packing list. It sees two short nights from your sleep tracker and swaps today’s intervals for an easy 5 km. And a hard week on your watch eases tomorrow’s workout, your meals and your evening together. And it’s a real running coach on the day. It builds your race plan back from race day, from a first 5 km to a marathon. It records your runs itself, by GPS on your phone or live from your watch, and sends each workout to your watch with its paces, intervals and heart-rate targets. Then it changes them as you run: a slower pace when your heart rate drifts, a longer recovery when you need one. It moves the long run before the heat and the intervals away from the rain, and it plans every set, rep and weight in your strength sessions too, changing them as you go. It works with your phone, your watch and other wearables through health apps such as Apple Health, Health Connect and Samsung Health, and more, and with your calendars, such as Google and Outlook. ## Seven weeks from a half marathon: a week with Retenna’s trainer Here’s how that looks in a real week. Your plan says four runs and a strength session a week. Your week says two short nights, a night in Leeds and a five-hour hike with friends on Saturday. Each note is what Retenna would show you, with its reason. Monday 07:00 · today This morning’s intervals become an easy 5 km. **Why:** 5 h 40 and 5 h 55 of sleep the last two nights, and after two short nights you cut hard sessions short, 3 of the last 4 times. Done for you Monday · planned to Sunday Leg day moves from Friday to Tuesday at 18:00, and your nutritionist has a high-protein dinner ready at 19:30. **Why:** you’re sore for two days after leg day, and Saturday is a five-hour hike with friends. Done for you Monday · for Wednesday in Leeds Intervals on the hotel treadmill at 07:00, with your running kit on the Leeds packing list. **Why:** you’re away on Wednesday night, and the hotel has a gym. Done for you Monday · for Saturday The hike counts as your long run, so there’s no separate long run this weekend. **Why:** five hours on your feet already does the job. Done for you Monday · for Sunday A rest day, with 20 minutes of stretching. **Why:** after a long day on your feet, rest does more than another run. Done for you Monday · 7 weeks to race day Your usual trainers in your size, £120, arriving on Thursday. **Why:** yours have done 640 km, and you like four weeks to break in a pair before a race. Waits for your yes · new spending The week changed, and race day stayed on track. You didn’t have to rewrite a thing, and you’re fresh for the hike with your friends. ### And on other weeks Thursday 18:00 · for tomorrow Friday’s hard run becomes an easy 30 minutes, dinner is ready at 19:00 and your evening is kept free. **Why:** a hard week on your watch, with three demanding days in a row and shorter nights since Monday. Done for you Wednesday 18:00 · the night before an interview Tonight’s hard session becomes a 30-minute walk, with a wind-down at 21:30. **Why:** hard sessions leave you flat the next morning, and you sleep badly before big days. Done for you Tuesday · your sister is in town on Thursday Dinner with her on Thursday at 19:00, and your Thursday run moves to Friday lunchtime? **Why:** you always make time for family, and Friday lunchtime is free. Waits for your yes · involves your sister Sunday · 12 days before you move house 20-minute morning workouts instead of your usual 45, until the move is done. **Why:** in busy weeks you keep 20-minute workouts and skip longer ones, 9 of your last 10. Done for you ## Race day planned back to today, and changed as you run Here’s a longer view: twelve weeks to a half marathon. Retenna plans the whole build back from race day, then keeps changing it, for the weather, for how each run is going and for the race itself. Each note is what Retenna would show you, with its reason. Week 1 · 12 weeks to race day Race day planned back to today: three runs a week rising to four by week 5, a Sunday long run that builds to 18 km, strength on Tuesdays, an easier week every fourth week, and two lighter weeks before the race. **Why:** you tend to stop after three runs a week, you’re often out late on Fridays, and you’re sore for two days after leg day. Done for you Saturday 06:30 · week 7 Today’s long run moves from 11:00 to 07:00, and its target pace eases by 15 seconds a kilometre. **Why:** it’s forecast to reach 28°C by late morning, and your heart rate runs high in the heat, 4 of your last 5 warm runs. Done for you Wednesday 16:00 · week 9 Tonight’s intervals move to Thursday at 07:00, when it’s forecast dry, and tonight becomes a rest evening. **Why:** heavy rain and wind from 17:00, and you cut intervals short in the rain, 3 of the last 4 times. Done for you Thursday 07:18 · interval 4 of 6 The next two recoveries stretch from 90 seconds to 2 minutes, and the efforts stay at 4:30 a kilometre. **Why:** your heart rate didn’t come back down in the last recovery, but your pace is right on target. Done for you Sunday 09:41 · 13 km into your long run Your watch now asks for 6:05 a kilometre instead of 5:45 for the last 5 km, and keeps your heart rate under 152. **Why:** your heart rate has crept 10 beats above plan since 8 km, on a warmer morning than forecast. Done for you Friday · race week Race day planned: kit laid out tonight, porridge at 06:30, leave at 07:35 for the 09:00 start, and a first 5 km at 5:20 a kilometre on your watch. Brunch with Sam and Priya after? **Why:** you start too fast when you’re nervous, 25 seconds a kilometre quick in your last two races, and Sam and Priya said they’d come to cheer. Waits for your yes · involves Sam and Priya It records every run itself, by GPS on your phone or live from your watch, so there’s nothing to copy across, and every change lands on your watch before you set off. Twelve weeks of real life, and the plan kept up with all of it. ## How it learns you Retenna’s trainer doesn’t hand you a plan and stop. It learns from what you do, what you choose and what you tell it, and joins it all into one living model of you that every expert shares. It’s built from your life, so no two are the same. 1. **Day one** It asks. Your race or goal, how many days you can run, your kit, any injuries or things you won’t do, and what to connect: your calendar, and your activity, sleep and other health data from your watch through health apps such as Apple Health, Health Connect and Samsung Health, and more. 2. **Within weeks** It suggests. It has seen that two short nights make you cut hard sessions short, so after a rough couple of nights it suggests swapping intervals for an easy run, and waits for your yes. 3. **In time** It decides like you. It swaps the session, moves the long run before the heat, eases your pace mid-run and counts the hike, then tells you what it did and why, with an Undo. Over a few months, the things it learns look like these. Each one shows where it came from, and you can see, change or forget any of it. - **After two short nights, you cut hard sessions short.** 3 of your last 4 times. - **You tend to stop after three runs a week**, so a plan with five isn’t one you’ll keep. - **You’re often out late on Fridays**, so Saturday morning isn’t the place for your long run. - **Your heart rate runs high in the heat.** 4 of your last 5 warm runs, so hot days get an earlier start and an easier pace. - **You cut intervals short in the rain.** 3 of the last 4 times, so wet evenings move the session. - **You start races too fast when you’re nervous.** From your last two races, so race day starts with a pace on your watch. - **You’re sore for two days after leg day.** From your last 8 leg days. - **Hard sessions leave you flat the next morning.** From your training log. - **In busy weeks you keep 20-minute workouts and skip longer ones.** 9 of your last 10. - **Your trainers have done 640 km, and you like four weeks to break in a pair.** From your runs and your last two pairs. ## How you shape it You stay in charge. You choose what Retenna simply does and tells you about after, and what waits for your yes. Change a rule, and your week changes with it. **Your own training · Do it, then tell me**The easy 5 km instead of intervals, or leg day moved to Tuesday. You see why, with an Undo. **New spending · Ask me first**New trainers at £120 wait for your yes, however sensible they are. **Friends and family · Always asks first**Booking dinner with your sister, or telling your running club you’ll miss Thursday, always waits for you. It also notices what you undo, and suggests a rule, so you only have to say it once: Retenna noticed · 3 of the last 3 times You’ve undone every run it moved to before 07:00. Make “Runs before 07:00: ask me first” a rule? **Then:** next time, “Easy run at 06:30 on Thursday? It’s your only free time before work” arrives as a question instead. Waits for your yes ## How to choose an AI running coach If you only want a running plan, one of these will do, and some are excellent. If you want your running looked after as part of your whole week, that’s what we built Retenna for. ### For your running on its own - **Runna** Race plans from 5 km to ultra that adapt, with strength built in, on most watches Or the Strava + Runna bundle if you use Strava too. - **Garmin Coach** Free plans that read your sleep and recovery, if you run with a Garmin - **Nike Run Club** Free guided runs and plans, with a coach’s voice in your ear - **Strava** Recording, analysing and sharing your runs Add Runna if you want a plan. - **Apple Watch** Interval workouts you build, and a spoken Workout Buddy, already on your wrist - **TrainAsONE** An AI plan that recalculates after missed runs, with a free plan ### For your running, as part of your whole life Ours · coming to iPhone, Android and the web Retenna A personal trainer that plans your race back from race day, records your runs and changes them as you go, around the weather and your whole week, working with your nutritionist, wellbeing coach, planner, stylist and shopper in one app. - Style - Beauty and grooming - Training - Food - Rest - Days, occasions and trips - Shopping - The people you love [Get early access](https://retenna.ai/#join-final) Mostly lifting? Our guide to [Fitbod alternatives](https://retenna.ai/articles/fitbod-alternatives) compares the strength apps, and [our AI personal trainer guide](https://retenna.ai/articles/ai-personal-trainer-app) covers Fitbod, Freeletics, Peloton, Apple Fitness+, Strava and WHOOP. ## What to check before you trust one - **What it can see.** A coach that only sees your runs can’t plan around your week. Check what it connects to, and that it asks only for what it needs. - **What it changes on its own.** Some apps adapt by themselves; others wait for you to say you’re ill or add a holiday. Know which you’re getting, and check that you can see why something changed and undo it. - **Whether it counts everything.** Strength, hikes and long days on your feet are training too. - **How it handles pain and injury.** Running apps, Retenna included, are not doctors, registered dietitians or physiotherapists. If something hurts, or you’re coming back from an injury, see a professional before you follow a plan. - **Privacy.** Runs carry your location, and sleep and heart data are sensitive. Check whether your runs are public by default, whether your data is used to train AI, and whether you can delete what it has learned. - **The real cost.** Some need a particular watch for their best features, and App Store and website prices can differ. ## How Retenna’s personal trainer coaches your running About Retenna · that’s us Every lifestyle expert, one mind that knows you. Its personal trainer builds your training around your life: a race plan from 5 km to marathon built back from race day, runs it records by GPS or from your watch, and strength sessions with every set, rep and weight planned ahead. It changes your pace, intervals and heart-rate targets as you run, and moves or eases runs for heat or rain. Seven weeks from a half marathon, after two short nights, with a night in Leeds and a hike on Saturday, it swaps today’s intervals for an easy 5 km, moves leg day to Tuesday, plans intervals on the hotel treadmill and counts the hike as your long run. You see why it changed each one, and you can undo any of it. Fitness is one of Retenna’s health features, so the trainer is for adults (18+), and it uses your health information only if you say yes in the app. And your trainer is one of a team, in one complete app. What makes Retenna different 1. **Every expert, in one app.** A stylist, a beauty and grooming expert, a personal trainer, a nutritionist, a wellbeing coach, a planner for your days, occasions and trips, and a personal shopper, each with a full space of its own. They remember what matters to the people you love, and an assistant runs through all of them. 2. **One living model of you.** It learns from what you do, what you choose and what you tell it. On day one it asks; soon it suggests; in time it decides the way you would. You can see, change or forget any of it. 3. **Every expert plans together.** They share one picture of your week, so a change in one reshapes the rest: leg day moves, so dinner is ready that night; brows move, so any redness settles before the party. 4. **Everything inside your rules.** You choose what it simply does and what waits for your yes. Every plan comes with the reason and an Undo, and anything that involves another person always asks first. Retenna is coming to iPhone, Android and the web. The UK will be one of the first countries, and we’ll confirm the others nearer the time. Early access is open now. [Get early access](https://retenna.ai/#join-final) ## In short The best running plan is the one that survives your real week. A good AI running coach plans back from race day, learns how you recover and what you stick to, and changes each run to fit your sleep, your plans and your travel, telling you why. It’s better still when it works with the rest of your experts, so food, rest, strength and running all pull in the same direction. ## Questions **What is the best AI running coach app?** It depends on what you want. Runna is strong for race plans that adapt, with strength built in, and works with most watches. Garmin Coach is free if you run with a Garmin and reads your sleep and recovery. Nike Run Club is free, with guided runs. Strava is best for analysing and sharing runs, and TrainAsONE for an AI plan with a free tier. If you want a coach that plans your race around your whole week, with your sleep, meals, plans and the weather, and changes your run as you go, that’s what we built Retenna to do. **Is there a free AI running coach?** Garmin Coach is free with a compatible Garmin watch, and its Run Coach plans change with your performance, recovery and health. Nike Run Club is free, with guided runs and plans, though it doesn’t describe changing them for you. TrainAsONE has a free plan that shows the next 7 days in full, and Runna’s first week is free. Retenna’s early access is free, and founding members keep founding pricing. **Runna or Garmin Coach: which is better?** They suit different runners. Runna works with Garmin, Apple Watch, COROS, Fitbit and Suunto, builds strength sessions into your plan and has plenty of tools for adapting it, though most of them start with you telling it something. It costs $119.99 a year. Garmin Coach is free but needs a Garmin watch, and its Run Coach changes your daily workout with your sleep and recovery by itself. Neither says it reads your calendar. **Will an AI running coach change my run after a bad night’s sleep?** Of the six, Garmin Run Coach is the clearest: it uses your sleep and recovery from your watch, and gives a lighter day after a poor night. Runna eases off when you tell it you’re not feeling 100%, and TrainAsONE watches your training load for fatigue. Retenna is built to: after two short nights, today’s intervals become an easy 5 km, with the reason. **Can an AI running coach change my run while I’m running?** Most only coach you through the plan. Apple Watch’s Workout Buddy tells you how your pace and distance are going, and Runna and Garmin send the workout to your watch, but changing it mid-run isn’t mentioned for any of the six. Retenna is built to: if your heart rate drifts on a long run, the pace on your watch eases, and if you’re not recovering between intervals, the recoveries get longer. **Will an AI running coach plan around hot or rainy days?** Runna’s Adapt for Heat, rolling out gradually, suggests slower paces on hot days for you to accept. TrainAsONE’s Premium plan adjusts for weather, and Garmin Run Coach adapts after you cut a run short in extreme heat. Retenna is built to move or ease runs for heat or rain before they happen: the long run moves to 07:00 on a hot Saturday, and wet-evening intervals move to a dry morning. **Can an AI running coach plan my strength training too?** Runna builds strength, mobility and Pilates sessions around your runs, and Garmin Coach has separate strength plans. Retenna’s trainer plans every set, rep and weight in your strength sessions, changes them during the workout when it isn’t going to plan, and moves leg day so your legs are fresh for the runs that matter. For lifting on its own, see our [Fitbod alternatives](https://retenna.ai/articles/fitbod-alternatives). **Does Retenna record my runs, and which watches does it work with?** Yes. Retenna is built to record your runs itself, by GPS on your phone or live from your watch, and to send each workout to your watch. It reads your health and activity from your phone, your watch and other wearables, through health apps such as Apple Health, Health Connect and Samsung Health, and more. It also connects to your calendars, such as Google and Outlook, your bookings and travel, and the weather wherever you are, so your training fits the week you’re really having. **Can an AI running coach replace a human coach or a physio?** For planning your running week to week, a good one can do a lot, and it’s there every day. But AI coaches, ours included, are not doctors, registered dietitians or physiotherapists. If something hurts, or you’re coming back from an injury, see a professional. **Is my running data private with Retenna?** Your Retenna is private to you. Everything it knows is locked to your account and walled off from everyone else’s, on Microsoft Azure’s secure cloud, encrypted when stored and on the way. You can see, correct, export or delete what Retenna holds about you, including anything it has learned. If you turn learning on, it learns from what you do and tell it to personalise your own experience, and what it learns stays with your account, never used for anyone else. We never use your information to train public AI models. We never sell your information, and detailed analytics and personalised ads are optional, for adults only, and off unless you say yes. **When can I use Retenna’s trainer?** Retenna is coming to iPhone, Android and the web. The UK will be one of the first countries, and we’ll confirm the others nearer the time. Join early access free and you’ll hear first, and founding members keep founding pricing for as long as they keep their plan. ## Sources - Runna: [website](https://www.runna.com/), [pricing](https://www.runna.com/pricing), [features](https://www.runna.com/features), [beginner plans and Mileage Insights](https://www.runna.com/press/runna-introduces-updated-beginner-running-plans-for-2026), [Plan Realignment](https://support.runna.com/en/articles/10026375-how-to-use-the-plan-realignment-feature), [Not Feeling 100%](https://support.runna.com/en/articles/13531498-how-to-use-not-feeling-100), [Holiday Mode](https://support.runna.com/en/articles/10225691-how-to-adjust-your-plan-around-holidays), [Adapt for Heat](https://support.runna.com/en/articles/15647483-how-does-runna-adapt-my-workouts-for-heat-and-humidity), [calendar](https://support.runna.com/en/articles/8601606-syncing-runna-to-your-calendar-scheduling-your-workouts), [beginner plans in the subscription](https://support.runna.com/en/articles/15396688-new-to-running-return-to-running-and-path-to-parkrun-plans), [Strava + Runna bundle](https://support.runna.com/en/articles/11626438-strava-runna-subscription-guide), [Strava acquisition](https://press.strava.com/en-gb/articles/strava-to-acquire-runna-a-leading-running-training-app), [App Store](https://apps.apple.com/us/app/runna-running-plans-coach/id1594204443) - Garmin Coach: [five ways to use Garmin Coach](https://www.garmin.com/en-GB/blog/five-ways-to-use-garmin-coach-on-your-watch/), [Run Coach announcement](https://www.garmin.com/en-US/newsroom/press-release/wearables-health/train-smarter-with-personalized-garmin-coach-training-plans-that-can-adapt-to-help-you-reach-your-goals/), [plans for runners](https://www.garmin.com/en-US/blog/fitness/garmin-training-plans-for-runners/), [which coach](https://www.garmin.com/en-US/blog/fitness/which-garmin-coach-is-right-for-you/), [workouts on your watch](https://www.garmin.com/en-US/newsroom/press-release/sports-fitness/2018-train-for-a-5k-with-garmin-coach-free-adaptive-training-plans-from-garmin/), [Garmin Connect+](https://www.garmin.com/en-US/newsroom/press-release/wearables-health/elevate-your-health-and-fitness-goals-with-garmin-connect/), [App Store](https://apps.apple.com/us/app/garmin-connect/id583446403) - Nike Run Club: [website](https://www.nike.com/nrc-app), [guide to the app](https://www.nike.com/a/running-goals), [App Store](https://apps.apple.com/us/app/nike-run-club-running-coach/id387771637) - Strava: [Athlete Intelligence](https://support.strava.com/en-us/articles/15401629-athlete-intelligence-on-strava), [strength update](https://www.whoop.com/us/en/press-center/strava-overhauls-strength-experience-with-expanded-partner-ecosystem-new-workout-log-and-muscle-maps/), [privacy policy](https://www.strava.com/legal/privacy), [App Store (prices)](https://apps.apple.com/us/app/strava-run-bike-walk/id426826309) - Apple Watch: [custom workouts](https://support.apple.com/guide/watch/create-a-custom-workout-apd66fcd5c5c/watchos), [Workout Buddy](https://support.apple.com/guide/watch/use-workout-buddy-apd65c7938e6/watchos), [training load](https://support.apple.com/guide/watch/track-your-training-load-apde4c07a6cf/watchos), [workouts from iPhone](https://support.apple.com/guide/iphone/customize-a-workout-iphbcd56be45/ios), [newsroom](https://www.apple.com/newsroom/2025/06/watchos-26-delivers-more-personalized-ways-to-stay-active-and-connected/) - TrainAsONE: [website](https://trainasone.com/), [pricing](https://trainasone.com/pricing), [App Store](https://apps.apple.com/us/app/trainasone-ai-running-plans/id1541355896) Spotted something out of date? Email [help@retenna.ai](mailto:help@retenna.ai) and we’ll fix it. ## Every lifestyle expert, one mind that knows you. An expert and a full space for every part of your life, one living model of you, and everything inside your rules. Coming to iPhone, Android and the web: join early access free, and keep founding pricing for life. [Get early access](https://retenna.ai/#join-final)