Cal AI: Calorie Scanner vs Cronometer.
Cronometer is what happens when a tracker optimizes for truth: lab-sourced nutrition data, vitamins and minerals down to the microgram, and a user base that treats a kitchen scale as standard equipment. Cal AI: Calorie Scanner optimizes for a different variable — the odds that you’ll still be logging in three months. Both are defensible. They just aren’t for the same person.
Depth of data versus depth of habit
Cronometer’s edge is data quality. Its entries lean on curated, lab-analyzed sources rather than crowd submissions, and it reports far more than calories and macros — iron, magnesium, B12, dozens of micronutrients most apps never mention. Earning that report card takes work, though: weighing portions and logging ingredient by ingredient is the intended workflow, and it shows in the effort each meal costs.
Cal AI: Calorie Scanner accepts a wider error bar per meal in exchange for near-zero effort. A photo of the plate becomes an itemized, editable estimate of calories, protein, carbs and fat; voice logging handles the coffee-and-snack moments. It reports macros, not micronutrients — a real limitation if vitamins are why you track. We’re upfront about the trade in our piece on how accurate AI calorie counting is: single-meal estimates vary, but consistent daily logging is what moves outcomes.
| Cal AI: Calorie Scanner | Cronometer | |
|---|---|---|
| Micronutrients (vitamins & minerals) | Not tracked — calories + macros | ✓ Extensive, from lab-sourced data |
| Database quality | AI estimates, editable | ✓ Curated, verified entries |
| Effort per meal | Seconds — one photo or a sentence | Weigh + log each ingredient |
| Photo logging | ✓ Core feature | Not a core feature — database-first |
| Voice logging | ✓ Included | — |
| Custom biometrics (glucose, labs…) | — | ✓ Broad biometric tracking |
| Free tier | 3 AI scans + unlimited manual logging, ad-free | Full logging free, with ads |
| Web experience | Dashboard included with Premium | ✓ Full-featured web app |
Match the tool to your temperament
Choose Cal AI: Calorie Scanner if…
- Precision-first tracking has burned you out before
- Calories and protein are the numbers you actually act on — our protein calculator sets the target, the camera tracks it
- Restaurant meals and eyeballed portions are your normal
- You’d rather correct an estimate than build an entry from scratch
Choose Cronometer if…
- You track for health markers — iron, B12, potassium — not just weight
- Weighing food is already second nature to you
- You follow a diet where micronutrient gaps are a real risk
- You want to log biometrics like blood glucose alongside food
The honest bottom line
Three free AI scans — your next plate, itemized without the scale.