The app that made photo calorie tracking mainstream, against one built on the same idea with different commitments about honesty and billing.
Cal AI - Calorie Tracker
4.8 from 359,136 ratings · Free
The app that took photo calorie tracking mainstream, and by far the most successful product in this specific category. Point the camera, get calories and macros. Very large user base, heavy marketing presence, and the reference point most people mean when they say AI calorie tracker.
KalTrack Made by Viral Labs
5.0 from 1 rating · Free
A camera-first tracker. Point at the plate for an AI estimate you confirm in two taps, or scan a barcode or nutrition label to get exact published figures instead. Built around the idea that a photo estimate is an estimate, with cuisine coverage beyond American food databases. New, and small.
Side by side
App Store figures retrieved 2026-08-27 from Apple's public lookup API, US storefront.
Cal AI - Calorie Tracker
KalTrack Made by Viral Labs
App Store rating
4.8 from 359,136 ratings
5.0 from 1 rating
How you log a meal
Photo of the plate, barcode, or description
Photo of the plate, barcode, nutrition label, or a typed description
Food data
AI estimate from the photo
AI estimate from the photo, plus Open Food Facts for barcodes and OCR for printed labels
Free tier
Limited trial-style access before subscribing
A few AI scans every day; barcode lookups unlimited and free
Paid plan
Subscription, priced on the App Store listing
KalTrack Pro, $9.99/month or $29.99/year, 7-day free trial, cancel in iOS Settings
Platforms
iPhone, Android
iPhone. Android in development, no date promised
Offline diary
Limited
Yes, diary is on-device and syncs later; scanning needs a connection
Apple Health
Yes
Optional: reads steps and active energy, can write logged food back
Which one to pick
Choose Cal AI - Calorie Tracker if
you want the most established product in photo calorie tracking, with the largest user base in the category and the refinement that comes from that scale. It is on Android, which KalTrack is not.
Choose KalTrack if
you want the estimate presented honestly rather than as a confident number, the price and the cancellation route made obvious before you commit, and food from outside American databases recognised properly.
The verdict
Cal AI created this category, and pretending otherwise would be silly. It is the more established product with vastly more users, and it works on Android.
KalTrack was built after watching what people complained about in apps of this kind, and the complaints clustered in two places. The first is presentation: a photo estimate delivered as a single confident number invites more trust than it has earned, when the honest thing is to show the food you recognised and let the person correct the portion. The second is billing. Subscription apps in this category have a reputation problem around how the paywall and the cancellation route are presented. KalTrack shows the billed price before the trial, keeps cancellation in Apple's own two-tap flow, and does not build a retention maze.
Those are commitments, not features, and you should weigh them accordingly. What we can point at concretely: barcode and label scanning are free and unlimited here, because the exact path should never be rationed, and the analysis handles non-Western cuisines as themselves rather than mapping them onto the closest American entry.
Cal AI has the track record. We have the position. Judge it after a week of using ours.
Method: figures come from each app's public App Store listing on the day this page was built, and from each app's own published pricing. Features were checked against the apps' own descriptions. We make KalTrack, so treat this as our account of the difference, not a review.