Retenna vs ChatGPT: which should run your outfits, meals, training and week?

The short answer

Use Retenna for your life and ChatGPT for everything beyond it. ChatGPT is a general-purpose chat: it answers, writes, researches and talks things through, and it can remember what you’ve told it. Retenna is a complete lifestyle app: an expert and a full space for each part of your life, all sharing one living model of you, planning together and getting things ready before you ask. It runs its own AI, built deeper for everyday life, so it answers your everyday questions already knowing you, while ChatGPT stays useful for broader questions, work and research.

Retenna and ChatGPT at a glance

What ChatGPT does well

Maker

OpenAI

Cost

Free; Go $8, Plus $20, Pro from $100 a month

Where

Web, iPhone, Android, desktop

App Store

4.8 from 11.6M ratings

ChatGPT is the AI most people have already tried, and with good reason. It’s available now, it’s free to start, and it’s good at almost anything you can put into words: answering questions, explaining, writing and researching, right up to a buyer’s guide for a bigger purchase with its shopping research. You can type, add a photo or talk to it, with limited voice on the free plan. Here’s what it does today to get to know you, and to help when you’re not asking.

MemoryWith Memory on, ChatGPT keeps saved memories, the details you ask it to remember, and can draw on your past chats too. Ask “What do you remember about me?” to see what it holds, delete anything in settings, or use a Temporary Chat when you don’t want it to remember. Below an answer, Sources can show which memories or past chats shaped it.

ProjectsProjects group related chats with their own files and instructions, so a training or meal-ideas project keeps its context. Even the free plan has them, with up to 5 files per project (25 on Go and Plus, 40 on Pro), and a project can keep its memory to itself or be shared with other people.

Scheduled tasksAsk ChatGPT to do something later or on repeat, such as a reminder or a regular update, and it runs as a scheduled task. You can have 3 active on Free and Go, 5 on Plus and 15 on Pro. Free tasks run at most once a day, and paid ones up to every hour. On Plus and Pro, a task can also start when a new Gmail message arrives.

ChatGPT Work, which replaced agent modeOpenAI has retired ChatGPT agent. Longer jobs now go to ChatGPT Work, included on Free, Go, Plus and Pro. It uses your files, plugins and approved tools to finish things such as a brief, a deck or a recurring update, and you approve important actions along the way. OpenAI’s examples for it are about work.

Plugins for your appsSince 9 July 2026, what used to be apps and connectors lives in the Plugin directory. Connect apps such as Gmail, Google Calendar and Outlook, then mention one with @ in a chat. ChatGPT may ask your approval before it reads from an app or takes an action.

Health, in the USHealth in ChatGPT lets people in the US connect Apple Health and supported medical records, on the web and iPhone, so its answers about sleep, activity or test results can use their own data. OpenAI says it’s there to support medical care, not replace it, and that this connected data isn’t used to train its models.

OpenAI also offers Dots, always-on agents for ongoing work on its top plans. We compare them with Meta’s Muse and others in our guide to the new AI agents.

Worth knowingAds may appear on the Free and Go plans, though not for people OpenAI identifies as under 18, and OpenAI says advertisers don’t see your chats. On personal plans, what ChatGPT reads from your connected apps can help train OpenAI’s models if “Improve the model for everyone” is on, so check that setting. Health in ChatGPT is US-only for now.

Where Retenna goes further

ChatGPT is a generalist, and a very good one. It helps when you ask, using what you tell it and what you connect. Retenna is built the other way round: an expert for each part of your life, each with a full space and real tools, all working from one living model of you and getting your week ready before you ask.

Yes

OpenAI documents it.

Partly

A lighter version: Apple Health in the US only, memories from your chats rather than from what you do, help in the chat when you ask, tasks you set up yourself, or approval for each action rather than rules you set.

–Dash

Not mentioned in OpenAI’s own pages. That doesn’t prove it can’t.

ChatGPT can talk about any of this. The difference is what it keeps and what it does without you: a wardrobe it can style from, a training plan that changes when your sleep does, a kitchen it knows, and experts that plan around each other. That’s the part of life we built Retenna for. If you’re weighing up single-subject apps instead, see the best all-in-one lifestyle apps.

The same request, handled by each

It’s Monday night and you type four words: “I got the interview!” It’s on Thursday at 10:00, 40 minutes away. Here’s what each is built to do with that.

In ChatGPT

ChatGPT can help you prepare straight away: likely questions, research on the company, a practice run out loud by voice. If Memory is on, it may already know which job this is. With Google Calendar or Outlook connected, it can look at your Thursday when you ask, and a scheduled task can remind you on Wednesday night.

What it leaves with you is the joining up. Spotting that the dentist is booked for 09:30 the same morning and deciding what moves. Remembering that you sleep badly before big days and that hard sessions leave you flat. Choosing the suit, and checking whether the 09:22 train has been running late. ChatGPT can help with each one, if you think to ask and give it the details.

In Retenna

Retenna already knows which interview, where it is, what else is in your diary, how you sleep before big days and what you feel sharpest in. So it plans the next three days around Thursday morning, across your whole life:

Sleep, training, food, clothes and travel joined up, from four words. So on Thursday, all you have to do is walk in.

Can I use both?

Yes, and they fit together well. Retenna answers everyday questions too, and because it already knows you, its answers fit your life: what to wear to Thursday’s dinner, what to cook with what’s in the fridge, whether to train after a short night. Its AI is built deeper for everyday life rather than for everything, so ChatGPT stays useful beyond it:

• ChatGPT for broader questions and work. Explaining something outside everyday life, drafting a report, researching a big decision, a deck for Monday.
• Retenna for your life, questions included. What to wear, train and eat this week, rest before a busy patch, every occasion and trip readied in time, shopping that buys what you need and not what you have, and the people you love remembered.

Retenna is built to connect to the calendars, email and health apps you already use, so it works from your real week. For questions beyond everyday life, ChatGPT is right there.

How Retenna gets to know you

ChatGPT’s memory helps it answer you better. Retenna’s living model is built to act for you, a little further ahead each month. It learns from what you do, what you choose and what you tell it, and every expert shares it. Here’s the same Thursday, as Retenna gets to know you:

1. Day one It asks. “Your sister is in town on Thursday night. What would you like to do?” You plan and book it yourself.
2. Month one It suggests. “You always make time for family. Dinner with her on Thursday at 19:00, and move your gym session to Friday lunchtime?” One tap.
3. Month seven It decides like you. Dinner is booked at the place you both like, near her hotel, and your gym session moves to Friday lunchtime, with an Undo. The invite for your sister waits for your yes.

What it learns is written in plain words, with where it came from:

• You feel your best in the navy blazer. From your wear notes.
• You’re sore for two days after leg day. From your training log.
• Big work weeks end in short nights. From 4 months of sleep.
• Priya, your closest friend, collects ceramics. From you.

You can see, change or forget any of it, and it stops planning around what you remove. Every plan you keep, swap or undo teaches it a little more.

How you stay in charge

Your rules, in your own wordsYou 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. Anything that involves another person always asks first, which is why the practice run with Jo waits for you.

A reason and an Undo, every timeEvery plan shows why it was made, and comes with an Undo. Undo something, and it learns from that too.

It notices what you undoKeep undoing the same kind of plan, and it says so and suggests a rule, such as asking you first next time.

And in ChatGPTControl is mostly per request. It may ask your approval before it reads from an app or acts, ChatGPT Work checks with you before important actions, and you manage Memory in settings. That suits a chat you drive yourself. Retenna is built to act on its own, so your rules come first.

How to choose

If you want answers, ideas and help with work, ChatGPT is hard to beat, and it’s free to start. If you want your outfits, training, meals, rest, plans and shopping looked after, by experts who know you and plan together, that’s Retenna.

For questions, writing and work

• ChatGPT FreeEveryday questions, writing and ideas, with memory and projectsAds may appear on Free and Go.
• ChatGPT PlusMore use, scheduled tasks up to every hour, and tasks that start from new emails$20 a month in the US, without ads.
• ChatGPT ProThe most use, plus OpenAI’s always-on Dots for ongoing workFrom $100 a month. Personal Pro accounts can’t use Dots in the UK, the EEA or Switzerland.
• Another AIGemini, if your life runs on Google’s apps, or one of the othersSee Retenna vs Gemini and the best ChatGPT alternatives.

For running your everyday life

How Retenna works

Questions

Sources

• OpenAI, plans and prices: pricing, ads in ChatGPT
• OpenAI, features: Memory, Projects, scheduled tasks, tasks from app events, ChatGPT agent, ChatGPT Work, Voice, Health
• OpenAI, your apps: plugins, apps, Outlook
• ChatGPT on the US App Store

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