A calorie counter with a product database
- Open the app
- Search for the product
- Pick from a list of similar ones
- Enter the portion, then repeat for every ingredient
Free food diary
Track calories on the go. Just message ChatGPT or Claude.
Send a photo, say it or type it, and you’re done. Your assistant works out the portion and calories; your diary adds up your day, week and month.
Sign up with email. Connect your assistant afterwards.
- Free, no ads
- Nothing to download
- One diary for ChatGPT and Claude
No searching, no tapping through lists
In a queue, at your desk, on the way out: one message is enough.
YumiFit
- Type, say it or take a photo in ChatGPT or Claude
- Your assistant does the maths and tells you what it saved
- Something’s off? Fix it in one sentence
From chat to diary
Example-
Logging
In the chat
YouFor breakfast: 93 g of this bread and 50 g of this cheese.
AssistantSaved to today's breakfast: bread 93 g and cheese 50 g. 328 kcal in total.
In YumiFit
Breakfast328 kcal
- Rye bread · 93 g 153 kcal
- Hard cheese · 50 g 175 kcal
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Correction
In the chat
YouActually, it was 63 g of cheese.
AssistantUpdated: cheese 63 g instead of 50 g. Breakfast is now 374 kcal. No new entry was added.
In YumiFit
Breakfast374 kcal
- Rye bread · 93 g 153 kcal
- Hard cheese · changed from 50 g to 63 g 221 kcal
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Day summary
In the chat
YouHow's my day looking?
AssistantYou've logged about 1,204 kcal of your 1,900 limit. Macros are incomplete: the cookie has no P/F/C.
In YumiFit
Calories
about 1,204 / 1,900 kcal
696 kcal left
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Before you eat
In the chat
YouI fancy yoghurt with granola. Will that be OK?
AssistantYes, you have about 696 kcal left and this is about 320. For more protein, add some skyr. I haven’t logged anything; tell me when you’ve eaten it.
In YumiFit
Calories
about 1,204 / 1,900 kcal
Diary unchanged: it was only a question.
Set up once, then just talk
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Create your account
Free, with email. The diary works straight away, even before you connect an assistant.
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Add YumiFit to ChatGPT or Claude
In your assistant’s settings, add the connection, sign in and allow access to your diary. Once per assistant; you can disconnect any time.
Step-by-step guide -
Say what you ate
For example: “Log in YumiFit: 2 eggs and toast.” Your assistant tells you what it saved.
Plans: in Claude, connectors work on every plan, including Free (Free allows one custom connector). In ChatGPT it depends on your plan and country; the guide says what we checked and when.
Honest numbers
Your diary shows what you logged. It doesn’t fill the gaps with guesses.
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Estimates are marked
Estimated amounts and values carry a ≈, so you can see what’s approximate.
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Missing isn’t zero
A day with no entries shows “No entries”, not 0 kcal. Missing macros are flagged.
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You decide when a day is complete
Averages and the estimated balance use only the days you marked complete, and say how many there were.
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Your limit isn’t your energy needs
Daily limit, goal and energy needs are kept apart. A flex day raises or removes the limit, and the calories still count.
Who sees what
Your assistant
ChatGPT or Claude
- Sees your message, voice or photo, under its own privacy terms.
- Works out portions and values, or reads them from a label.
- Saves a meal when you tell it what you ate. Just asking “how much is 100 g?” saves nothing.
YumiFit
Your diary
- Gets only what your assistant saves, such as meals, goals and comments.
- Doesn’t see your chats and has no AI of its own.
- Adds up days, weeks and months. You can edit any entry by hand.
- We don’t keep your photos.
- Download all your data as a JSON file.
- Delete your account and diary in Settings.
- Disconnect an assistant at any time.
YumiFit is run by I & B sp. z o.o., Poland. Privacy policy
Questions
Is it really free?
Yes. No subscription, no premium tier and no ads. You need an account, and your assistant runs under your own ChatGPT or Claude plan.
Do I need a paid ChatGPT or Claude plan?
Not for Claude: connectors work on every Claude plan, including Free, which allows one custom connector. For ChatGPT it depends on your plan and country, and OpenAI changes this from time to time. The connection guide lists what we checked and when.
Do I have to install an app?
No. YumiFit works in the browser on your phone and computer, and you can add a shortcut to your home screen. In ChatGPT or Claude you add the connection once, in settings.
How accurate are the numbers?
As accurate as what goes in. Label values and weighed portions are the most precise; estimates from a photo or “a medium banana” are rougher and marked with ≈. You can correct any entry in one sentence or by hand.
Will it tell me what to eat?
If you ask. Your assistant can check today’s diary and say whether something fits or what simple thing to add. That’s ChatGPT or Claude answering, not a dietitian: no meal plans unless you ask for one, and no medical advice.
Can I use ChatGPT and Claude together?
Yes. One account works with ChatGPT, Claude and the web app at the same time, and everything goes into the same diary.
Does it work without an assistant?
Yes. You can add meals by hand in the app and connect an assistant whenever you like.
What do you store, and how do I delete it?
Only what your assistant saves to your diary, such as meals, goals and comments. We don’t see your chats and we don’t keep photos. In Settings you can download everything as a JSON file and delete your account together with the diary.
Is this a medical or weight-loss app?
No. It’s a food diary, not medical advice, and it doesn’t promise results. It works whether you want to lose, keep or gain weight, or just see what you eat. If food or weight worries you, please talk to a doctor or dietitian.
Free food diary for ChatGPT and Claude
Create free accountNo ads, no subscription. Delete your account any time.