2 seconds to log a meal ✦Calories, protein, carbs & fat ✦Barcode & menu scanning ✦Fasting timer ✦Water tracking ✦Works offline ✦2 seconds to log a meal ✦Calories, protein, carbs & fat ✦Barcode & menu scanning ✦Fasting timer ✦Water tracking ✦Works offline ✦
How it works
Three taps, and the day is logged
01
Snap the plate
Open the camera and shoot. Diat handles mixed plates, packaged food, restaurant menus and barcodes.
02
Check the read
You get the food name, the portion and a full macro split. Wrong about the portion? Drag it and the numbers follow.
03
Watch the budget
Every entry comes off a calorie budget built from your body, your goal and your activity — so you always know what's left.
The more you log, the less you type
Diat learns the meals you eat on repeat. Your usual breakfast stops being a search and becomes a single tap.
Features
Everything the food diary was missing
Built around the part people actually quit: the logging.
AI vision
One photo, the whole plate
Diat separates each food on the plate, estimates portions from what it can see, and returns calories plus a full macro breakdown. No searching a database, no scrolling a list of 40 near-matches.
Mixed plates split into separate items
Barcode scanning for packaged food
Photograph a restaurant menu and get estimates per dish
Daily target
A calorie budget that adapts
Tell Diat your height, weight, goal and how active you are. It sets a daily calorie and macro target, then updates as your weight moves — so the target is still right in week six, not just week one.
Targets from your body and your goal
Recalculated as your weight trends
Protein, carbs and fat tracked alongside calories
New
Recipes that fit what's left
It's 7pm and you have 620 calories and 40g of protein left. Diat generates meal ideas that land inside exactly that gap, with the macros already worked out.
Generated against your remaining budget
Filtered by your dietary preferences
Log the finished dish in one tap
Built in
A fasting timer that explains itself
Run 16:8, 18:6, OMAD or a window you set yourself. Diat tracks the window live and shows which stage your body is in — digestion, fat burning, ketosis — so the hours feel like progress instead of waiting.
Live window with stage-by-stage detail
Lock screen and Live Activity support
Fasting history alongside your weight trend
Know exactly when your body switches gears
Watch the window move through digestion, fat burning and ketosis in real time — with a reminder before the window closes.
Reviews
What people say
I'd quit three other calorie apps because logging took too long. Photographing the plate is the first version of this I've actually kept up.
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The portion estimate is close enough that I stopped second-guessing it, and the budget updating as I lost weight kept the target honest.
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Having the fasting timer and the calorie log in one app is the reason I switched. I was running two apps before.
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FAQ
Questions people ask first
How accurate is a photo compared to weighing food?
A scale is still the most accurate method, and Diat will not beat one on a plate of plain rice. What a photo does is give you a close estimate in two seconds instead of a precise one you stop recording after a fortnight. If a portion looks off, drag the portion slider and every number updates.
What if Diat gets the food wrong?
Correct it. Tap the entry, pick the right food or search for it, and adjust the portion. Corrections feed back into how your future meals are recognised.
Do I need a subscription?
No. Diat is free to start and the core photo logging, calorie budget and fasting timer work without paying. A paid tier unlocks the higher-volume features — see the current pricing in the app, since it varies by region.
Does it work without a connection?
You can log, edit and check your budget offline. Photo recognition needs a connection to run, so scans taken offline are queued and processed once you're back online.
Does Diat sync with Apple Health?
Yes, with your permission. Diat reads activity and writes nutrition and weight back, so your calorie budget reflects what you actually burned that day.
What happens to the photos of my food?
They are processed to identify the food and estimate nutrition, and kept only as long as needed to provide that feature. They are never used for advertising. The full detail is in our Privacy Policy.
Your plate. Decoded.
Download Diat and log tomorrow's breakfast with one photo.