Comparison · checked 2026-10-16
Best AI calorie counter apps in 2026
The best AI calorie counter depends on what you need: SnapCalorie uses iPhone Pro depth sensors for portions; MyFitnessPal and Lose It! have the largest food databases and Android apps; Cronometer has a curated nutrient database. Kalova takes calories from USDA FoodData Central when a food matches, gives the same answer for the same photo, and needs no account.
Disclosure: this page is written by Daler Soliev, who makes Kalova. That is a conflict of interest, so every competitor fact below links to the competitor's own listing, and the comparison is about how the apps work, not a ranking we tested and scored.
What makes an AI calorie counter accurate?
Every photo calorie app does three jobs: it identifies the foods, estimates how many grams of each there are, and turns grams into calories and macros. The apps differ mostly on the third step. Some look the food up in a nutrition database; others let the AI model produce the numbers. A database lookup can be checked against a source. A model's number can change between two scans of the same plate.
We look at three things:
- Where the numbers come from. A named database, or the AI's estimate.
- Repeatability. Does the same photo give the same answer? The five-scan test checks this in a minute: scan one untouched plate five times and compare the totals.
- Portion handling. How the app estimates grams, and whether you can see and edit them.
How do the AI calorie counter apps compare?
This table only lists facts stated on each app's own App Store listing, Google Play listing or website, checked 2026-10-16. A dash means we could not confirm it from the developer's own pages. Prices are US and change often, so we link the listing instead of quoting most of them.
| App | Platforms | How it logs food | Where the numbers come from (developer's description) | Free tier (per listing) | Price |
|---|---|---|---|---|---|
| Cal AI | iPhone, Android | Photo, barcode, describe a meal | Depth sensor estimates volume, then the AI calculates calories and macros | Listing says food scanning results require a subscription | Subscription; see their listing |
| SnapCalorie | iPhone, Android | Photo, voice, nutrition-label scanner | AI identifies food and measures portions (LiDAR on iPhone Pro); nutrition from the USDA database | Website says core features are free | Subscription; see their listing |
| MyFitnessPal | iPhone, Android | Search 20.5M+ foods; barcode, meal scan and voice in Premium | Its food database | Search logging; barcode and meal scan are Premium | Premium; see their listing |
| Lose It! | iPhone, Android | Search a 56M+ item database; photo, voice and barcode in Premium | Its food database | Calorie tracking; photo, voice and barcode are Premium | Premium; see their listing |
| Cronometer | iPhone, Android | Search, free barcode scanning; photo and voice in Gold | Curated database of 1.1M+ verified foods | Barcode scanning free; photo and voice are Gold | Gold listed at $10.99/month or $59.99/year (US) |
| MacroFactor | iPhone, Android | Search, barcode scanner | Verified food database (also uses Open Food Facts) | No free tier; 7-day trial | $11.99/month, $47.99/6 months, $71.99/year (US) |
| Foodvisor | iPhone, Android | Photo, voice, search, barcode | — | — | Premium; see their listing |
| Kalova | iPhone (iOS 17+), Apple Watch, widgets | Photo, describe a meal, on-device voice dictation, barcode, food search, nutrition-label scanner | AI identifies foods and estimates grams; calories and macros from USDA FoodData Central when a food matches; unmatched items marked as estimates | 3 AI photo scans a day for the first 3 days, then 1 a day; barcode, label scanning, search and manual logging unlimited; no account | From 17 Oct 2026: $0.99/month or $9.99/year (US), 7-day free trial on yearly |
Which app is best for which person?
Cal AI
Cal AI is the best-known app in this group: it has more than 370,000 ratings on the US App Store, and its website describes photo, barcode and text logging with a depth-sensor volume estimate. It is on both iPhone and Android. Its App Store listing says food scanning results require a subscription. If you mainly want the most popular option and are happy to subscribe, it is a reasonable pick. We compare it with Kalova in detail on Kalova vs Cal AI.
SnapCalorie
SnapCalorie is the strongest choice if you have an iPhone Pro and care most about portions: its listing says it measures food volume with the LiDAR depth sensor and pulls nutrition from the USDA database. Its listing also says its founders published the Nutrition5k study of 5,000 weighed dishes. It tracks 100+ micronutrients and is on Android too.
MyFitnessPal
MyFitnessPal has by far the largest user base here (over 2.3 million US App Store ratings) and a 20.5M+ food database that includes restaurant dishes, on iPhone and Android. Barcode scanning, meal scan and voice logging are Premium features according to its listing. See our MyFitnessPal alternative page for what to weigh if you are thinking of switching.
Lose It!
Lose It! is a long-running, well-rated tracker with a 56M+ item database, community groups and wide device syncing. Its photo meal logging, AI voice and barcode scanner are listed as Premium features.
Cronometer
Cronometer is the pick for micronutrient detail: its listing describes a curated database of 1.1M+ verified foods and 95+ vitamins and minerals. Barcode scanning is free; photo and voice logging come with Gold.
MacroFactor
MacroFactor is built around an adaptive coaching algorithm that, per its listing, adjusts your calorie and macro targets based on what you log and on its expenditure estimate. It is a paid app with a 7-day trial and no free tier.
Foodvisor
Foodvisor logs by photo, voice, search and barcode, includes a gamified daily "seed", and is on iPhone and Android. Its listing says it is an App Store Editors' Choice.
Kalova
Kalova is for people who want to see where each number came from. The AI identifies the foods and estimates grams; calories and macros come from USDA FoodData Central when a food matches, and anything without a match is marked as an estimate. Each result has a per-item Nutrition Receipt with grams and sources, and you can edit the grams before saving. The same photo gives the same answer. It needs no account, has no ads, and the food log stays on the iPhone. It is iPhone only. The full method is on the methodology page.
What does every photo calorie app get wrong?
Portion size. A single 2-D photo has no reliable sense of depth, so the app has to guess how much food is on the plate. This is the main error source for every photo app, Kalova included; depth sensors reduce it but do not remove it. Hidden fat is the second problem: cooking oil and butter are often invisible. Mixed dishes such as stews are harder than separate items on a plate. The fix is the same in every app: check the grams, and add oils by hand when you know they were used.
How can you test an AI calorie counter yourself?
Run the five-scan test: plate one meal, scan it five times from the same angle, and write down the five calorie totals. Then open a result and look for where each number came from. We plan to run this test on every app in the table and publish the raw numbers here; until then we are not publishing results, because we have not run the test.
Limitations of this comparison
- The author makes Kalova. Read the competitor sections with that in mind, and check their listings yourself.
- This is a comparison of how the apps describe their methods and pricing, not a measured accuracy test. No test results are published yet.
- We looked at US iPhone listings. Prices, free tiers and features differ by country and change often.
- "Where the numbers come from" is each developer's own description. We could not confirm it independently.
Sources
Competitor facts on this page were checked on 2026-10-16 against each app's own App Store listing, Google Play listing or website. Listings change; check them before you buy.
- https://apps.apple.com/us/app/cal-ai-calorie-tracker/id6480417616
- https://www.calai.app/
- https://play.google.com/store/apps/details?id=com.viraldevelopment.calai
- https://apps.apple.com/us/app/snapcalorie-ai-calorie-counter/id1574239307
- https://www.snapcalorie.com/
- https://apps.apple.com/us/app/myfitnesspal-calorie-counter/id341232718
- https://play.google.com/store/apps/details?id=com.myfitnesspal.android
- https://apps.apple.com/us/app/lose-it-calorie-counter/id297368629
- https://play.google.com/store/apps/details?id=com.fitnow.loseit
- https://apps.apple.com/us/app/cronometer-calorie-counter/id1145935738
- https://play.google.com/store/apps/details?id=com.cronometer.android.gold
- https://apps.apple.com/us/app/macrofactor-macro-tracker/id1553503471
- https://play.google.com/store/apps/details?id=com.sbs.diet
- https://apps.apple.com/us/app/foodvisor-ai-calorie-counter/id1064020872
- https://play.google.com/store/apps/details?id=io.foodvisor.foodvisor
Frequently asked questions
Is Cal AI accurate?
Cal AI's own website says its depth sensor calculates food volume and its AI then works out calories and macros, and its support FAQ describes the app as about 80% accurate. We have not yet published our own test of Cal AI. Like every photo app, its biggest error source is portion size from a photo. You can check repeatability yourself with the five-scan test.
Which AI calorie counter is free?
Kalova's free tier currently includes 3 AI photo scans a day for the first 3 days, then 1 a day, plus unlimited barcode scanning, nutrition-label scanning and food search, with no account. SnapCalorie's website says its core features are free. Cal AI's App Store listing says food scanning results require a subscription, and MacroFactor's listing says it has a free trial but no free tier.
Do AI calorie counters work for restaurant food?
They work, but less precisely. Restaurant dishes often contain oil, butter and sauces that a photo cannot see, and portions are harder to judge. Use the photo estimate as a starting point, check the grams, and add cooking fat by hand when you know it was used.
Which calorie app works without an account?
Kalova works with no account, email or sign-up; the food log stays on the iPhone. Cal AI's support FAQ describes signing in with an Apple ID or Google account and storing data in the cloud. For other apps, check the sign-up screen and the App Privacy section of the App Store listing before you install.
Is there an AI calorie counter for Android?
Yes. Cal AI, MyFitnessPal, Lose It!, Cronometer, MacroFactor and Foodvisor have Google Play listings, and SnapCalorie's website says it is available on iOS and Android. Kalova is iPhone only for now (iOS 17 or later).