Short answers to the questions worth asking first: why it exists, what it fixes, and where AI fits in.
Why build another calorie app?
Because most of them stop at the hard part. They ask your age, height and weight, run a formula and hand you a number. That number is an average for people like you, and for you in particular it can be off by several hundred calories a day. Nothing tells you. You find out weeks later, when the scale has not moved and you start to wonder what you are doing wrong.
Tracky was built to close that gap: to keep checking the number against what actually happens, and to fix it.
What problem does it solve?
Knowing whether your target is right. Your diary says what you ate; the scale says what happened. Side by side for a few weeks, they show how much you actually burn, which no formula can. Tracky works that out every week and moves your target to match.
A stall that is only water stops looking like failure: the trend shows it for what it is.
A target that was too low stops grinding you down: it goes up when your weight says it should.
Every number can be checked: each food says which public database it came from, and shows its label as printed.
An assistant is good at conversation. It can guess what is on a plate, suggest a dinner, and talk you through a bad week. What it is not is a record. Each conversation starts nearly empty, the same meal can come out at a different number on a different day, and weeks of weigh-ins are a long sum to leave to a guess.
Getting a target right takes the opposite: every meal and every weigh-in kept, the same food always worth the same, and the same arithmetic done the same way every week. That is Tracky's part. The assistant is the conversation; Tracky is the memory and the maths.
So where does my AI come in?
Wherever you want it. Connect the assistant you already use, such as Claude or ChatGPT, under Settings → Connected apps. It can then read your diary, your targets and the reasons behind them, your weigh-ins and your trend, so it answers from your numbers instead of guessing.
If you allow it, it can log for you too: “two coffees”, “same breakfast as yesterday”. It can never change your targets, goals or settings, and disconnecting it cuts it off straight away.
Why not build an AI into the app?
Because you already have one, and it improves faster than any app could keep up with. An assistant built into a calorie app is stuck with the model chosen the year it shipped, knows only what you tell it inside that app, and is one more assistant to learn and pay for.
We think the future runs the other way. You choose the assistant, it knows your life, and the apps you use give it what it needs, with your permission. Tracky's job is to be the part your assistant can rely on. Switch assistants next year and your diary comes along; nothing has to start over.
Do I need an AI to use it?
No. Everything works in the app on its own: search, barcodes, the day, weigh-ins and the weekly check-in. An assistant is one more way in, not a requirement.
What happens to my data?
It stays yours. An assistant sees it only after you sign in and approve it, and Settings lists every app you have connected, each one a tap from being disconnected. You can download everything Tracky keeps about you, in a file other programs can read, whenever you like.