Diety

AI calorie deficit tracker

Counting calories tells you what you ate. A deficit tells you whether you lost.

Diety works out what your body burns, then tracks the gap your weight loss actually depends on. Photograph a plate, scan a barcode, or just say what you had.

4.3 ★ on Google Play 100,000+ downloads Free to start
The Diety home screen: a 1,196 kcal deficit marked ON TARGET, 805 of 1,668 eaten, carb, protein and fat bars, and the day's journal below.

The real app, on an example day

The number most trackers leave out

Your deficit is maintenance minus what you ate.

Most apps give you a calorie budget and a running total. Neither of those is the thing that moves the scale. Diety estimates what your body burns from your height, weight, age and how your week really goes, and shows you the gap underneath — every day, as you log.

Your body burns

2,001

Maintenance estimate, kcal

− you ate

1,425

Logged across four meals

= deficit

576

The number that becomes fat loss

A safe floor is built in. Diety will not recommend a goal below a sensible daily minimum, and it says so when your target would cross it.

Core features

Six ways to get a meal into the diary.

Logging is the part people quit over, so most of the app is about making it take seconds.

Photograph your plate

Point the camera at a meal and get the dishes, the portions and the macros back, itemised. Correct any row with a tap before it goes in.

iPhone & Android

Scan the packet

Barcode scanning for packaged food, with brand packs recognised by their picture rather than by a four-word name that reads like three other products.

iPhone & Android

Deficit, tracked live

A maintenance estimate, a daily goal and the gap between them, updating as you log. Weekly pace too, so one heavy day reads as what it is.

iPhone & Android

Protein, carbs, fat — and the rest

Macros against your own split, plus fibre, sugar and sodium. Set a custom split, or let the goal you picked set one for you.

iPhone & Android

Weight, with a projection

Log your weight and see the trend through the noise, with a projection to your target built from the deficit you are actually holding.

iPhone & Android

A diary, by meal

Breakfast, lunch, dinner and snacks, with your own meal windows. Save what you eat often and put it back in one tap.

iPhone & Android
Android today — coming to iPhone

Or skip the forms and just say what you ate.

The assistant reads your own diary. It can price a meal from a sentence, tell you the portion that still fits, plan three days around what you keep missing, and fix a row you got wrong — without you opening a single screen.

A log card built from one sentence, listing poha with peanuts, curd, rajma curry, steamed rice, cucumber and onion salad and an apple, each with a serving, a calorie figure, a tick and a counter.
One sentence, six foods“I had poha with peanuts and curd for breakfast, rajma chawal with salad for lunch, and an apple in the afternoon.” Every row priced, ticked and countable before anything is saved.
A suggestion card offering paneer bhurji with 2 roti at 505 kcal, broken down into paneer, onion and tomato, and roti, with two alternatives underneath and a Log to dinner button.
And the portion that fitsIdeas priced against what is left of your day, each one broken into its parts, so you can see where the calories actually are before you commit.

What’s in my fridge

Photograph the shelf. It lists what it can see, you correct it, and it suggests meals from what you actually have.

Your usual meal, offered

When you have had the same breakfast for weeks, it offers that breakfast at the time you normally eat it. Nothing is written until you tap Log.

Answers from your own numbers

“How is my week going?” “Why am I not losing?” “Am I eating enough protein?” — answered from your diary, not from general advice.

Getting started

Three minutes to a goal that fits you.

STEP 1

Tell it where you are

Height, weight, age, how active your week really is, and what you are aiming for. It works out maintenance and a pace that is safe to hold.

STEP 2

Log however you like

A photo, a barcode, a search, or a sentence. Every route ends at the same card, with ticks and a count you can change before anything is saved.

STEP 3

Watch the gap, not the total

The deficit is on the home screen all day. Weekly pace tells you whether a heavy Saturday actually mattered.

4.3 ★

Google Play, from 2,088 reviews

100K+

Downloads

24

Languages on Android

Free

To download and start

Speaks your language — and knows your food

Not a translated menu over an American food list. Portions are named the way they are named where you live: a roti, a cambur, half a rghif, a Stück.

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Start today

Find out what your deficit actually is.

Free to download, with free AI scans to try. Premium unlocks unlimited photo analysis, custom macro splits and the detailed nutrient views.