AI Macro Tracker · Free on iPhone
Snap a meal.
Get the macros.
Keep going.
Point your camera at dinner. A frontier AI model works out calories, protein, carbs, fat and ten more, then lets you fix anything it got wrong just by saying so.
- Frontier AI, not a lookup table
- 14 nutrients on every meal
- Water counted from food
- Caps, not just goals
- Free, no subscription
Track
Today
949
kcal of 2,000 kcal today
1,051 kcal left
Trend
What the others miss
Four things almost no food tracker does
Every macro app can count calories. These are the gaps people hit in week three, and the reason AIM exists.
Water that comes from your food
About 20–30% of your daily water arrives as food rather than drink. AIM estimates water in milliliters from every meal, including the water in the food itself, and tracks it as a nutrient, not a separate glass counter.
Other trackers count glasses and ignore everything you ate.
Any nutrient you care about
Folate before pregnancy. Iron after a lab result. Iodine on a plant-based diet. Add a metric with its own name, unit and goal, and AIM estimates it on every meal from then on.
Other trackers give you three macros and a wall.
Caps and alerts, not just goals
Some numbers are ceilings. Cap added sugar at 25 g, sodas at three a week, sodium, saturated fat, alcohol, daily or weekly. The meal that crosses the line is flagged when you log it, with the amount that did it.
Other trackers only know how to count up.
Ingredient flags with the reason attached
Tell AIM what you avoid and it says so when it turns up. It also flags categories with a documented history, cocoa and cadmium, rice and arsenic, protein powder and lead, in one plain sentence. Never a number, because a photograph cannot measure contamination.
Other trackers show you a green score and move on.
Limits
Sunday, Sep 13
Caps
The iced latte took you past it.
Custom metrics
Flagged today
Cocoa is a category where consumer testing has repeatedly found cadmium and lead. No amount is measurable from a photo.
You asked to be told about this one.
How it works
Three steps, about eight seconds
Food diaries die from the time they take, not from a lack of willpower. This is the part AIM removes.
AIM
Sunday, Sep 13
Chicken burrito bowl, about 650 kcal and 46 g of protein, same build as before.
Chicken burrito bowl
Lunch · 12:00 PM
9 more
- assumed same build as your previous bowl
- no guacamole or sour cream included
Updated that bowl to a double, 1,322 kcal, 100.8 g protein.
- 01
Snap it or say it
Photograph your plate, or type “chicken burrito bowl”. You get a full breakdown in seconds, broken out ingredient by ingredient, not lumped into one number, with the assumptions it made written out underneath.
- 02
Adjust anything on the fly
Got something wrong? Say so. “Actually it was a double”, “no rice”, “add guac”. AIM updates the meal you were just talking about instead of making you delete it and start again.
- 03
Edit any number by hand
Tap a number, type over it, done. Your value is laid on top of the estimate rather than replacing the meal, so fixing the calories does not throw away the ingredient breakdown.
What it tracks
Fourteen nutrients as standard. Then whatever else you add.
Pin the handful you are watching to your meal cards. The rest stay recorded and stay chartable, they just live behind “more”.
Energy
Hydration
Plus your own. A custom metric takes a name, a unit and a goal or a cap, folate in µg, omega-3 in g, sodas as a weekly count. From then on it is estimated on every meal like everything else. How custom nutrients work →
Apple Health
Your workouts come in, your meals go out
A long run stops making your day look like you overate, and the meals you log show up wherever else you track them. Both directions are optional, and you grant them one data type at a time.
Reads your activity
Active energy from Apple Health comes in, so a long run shows up against the day rather than leaving your numbers looking like you overate.
Writes what you logged
Energy and macros go back out to Health, where the rest of your apps can see them. Nothing is written without you turning it on.
Revocable, per type
Permissions are Apple's, granted per data type in the Health app, and you can take any of them back without uninstalling anything.
Side by side
AIM compared to a typical macro tracker
Not a knock on the category, these are simply the trade-offs a database-and-streaks design makes, and the ones AIM makes instead.
| Feature | AIM | Typical macro tracker |
|---|---|---|
| Logging a meal | A photo, or a sentence. Seconds. | Database search, portion guess, repeat per ingredient. |
| Correcting an estimate | Say “it was a double”, it amends the same meal. | Delete the entry, search again, re-enter. |
| Assumptions | Printed under every meal, so you know what to fix. | None shown. One number, no working. |
| Water | Estimated from food and drink, as a nutrient. | A glass counter you tap, ignoring what you ate. |
| Nutrients beyond the macros | 14 as standard, plus any metric you define. | Calories and three macros; micros behind a paywall if at all. |
| Limits | Caps with warnings, daily or weekly, on anything. | Goals only, the bar just keeps filling. |
| Price | Free. | $40–80 a year for the features above. |
The full comparison, including where a conventional tracker wins
Questions
Straight answers
- Is AIM free?
- Yes. AIM is free to download and use, with no subscription and no paywalled nutrients. You can use it without an account; signing in only matters if you want your log on more than one device.
- What AI model does AIM use?
- A frontier multimodal reasoning model, the same class of system used for hard general-purpose work, rather than a small image classifier trained on a fixed list of dishes, or a lookup against a food database. It is given room to think before it answers rather than being run at the cheapest, fastest setting, because estimating a portion from a photograph is a judgment call. That costs a few seconds per meal and is what lets it separate a plate into its components instead of returning one coarse total.
- How accurate is tracking macros from a photo?
- For calories and macronutrients, an image plus a short description lands in the same range as a person estimating portions by hand, and it takes seconds instead of minutes. AIM prints the assumptions it made under every meal so you can correct the one that is wrong, and every number is editable by hand. Micronutrient estimates carry more uncertainty because vitamin and mineral content varies with soil, cultivar and cooking.
- Can AIM track water from food?
- Yes, and it is one of the main reasons AIM exists. Water is a nutrient in the same registry as protein, estimated in milliliters from each meal including the water in the food itself, the broth in a soup, the moisture in chicken, the water rice absorbs while cooking. Food supplies roughly 20–30% of most people's daily water, which glass-counting trackers miss entirely.
- Can I track a nutrient like folic acid or iodine?
- Yes. Fourteen nutrients ship as standard, calories, protein, carbs, fat, fiber, sugar, saturated fat, sodium, cholesterol, potassium, calcium, iron, vitamin C and water. Beyond those you can add a custom metric with its own name, unit and daily or weekly goal, and it is estimated on every meal from then on.
- Can I set a limit instead of a goal?
- Yes. Any nutrient or custom metric can be a cap, a number to stay under rather than reach. Cap added sugar at 25 g a day, sodium, saturated fat, alcohol units a week, or sweetened drinks as a simple count. The meal that takes you over is flagged when you log it, with the amount that did it.
Articles
Why AIM works the way it does
The reasoning behind each feature, and the nutrition questions underneath it, including the ones where the honest answer is that software cannot know.
Nutrition
Alcohol: the calories that vanish from most food logs
Seven calories a gram, almost nobody logs it, and it suppresses fat oxidation while it is being processed. The arithmetic is less forgiving than the culture around it.
October 26, 20264 min
Nutrition
Calorie labels are legally allowed to be wrong
The FDA permits up to 20% variance on declared calories, and restaurant meals are routinely further off than that. Which changes what a tracking number is actually for.
October 24, 20264 min
Food safety
Mercury in fish: which ones, and how often
Fish is among the best things you can eat and four species are worth avoiding outright. The rule is simple once you know it runs on size and lifespan.
October 22, 20264 min
Most food diaries die in week two.
Not from lack of willpower, from hunting through a database for “grilled chicken breast, skinless” three times a day. That is the part AIM removes.
No subscription. No paywalled nutrients. No streaks.