Cal AI Reviews: What Users Praise and What They Report
Cal AI reviews: of the 500 newest US App Store reviews, 252 gave one or two stars, most often over billing. An NIH test found photo estimates 345 kcal low.
Daniel Reyes · · 5 min readWriter, Calsa blog
Daniel Reyes
Daniel writes about the math behind food tracking: how calculators reach their numbers, what macros measure and how a photo becomes an estimate.
About Daniel
Daniel writes about the math behind food tracking. How does a calorie calculator get to its number? How much does a walk really burn? And what happens between the photo of your plate and the estimate on the screen?
He works the math through before he writes it up, shows the formula when it helps, and says plainly where an estimate stops being reliable. When he compares, he compares features and trade-offs rather than brands, so you can judge any app or calculator yourself.
Latest guidePhoto logging
Food Scanner Apps: Barcodes, Photos and Where Each One Slips
Choosing a food scanner app? A barcode record can be stale, and one photo test missed portions by 33.4%. See where each scan slips and what to check.
Daniel Reyes · · 10 min read
Key number33.4%GPT-4o portion error on 806 weighed meal photos
More by Daniel
Daniel Reyes · · 5 min readAI Food Tracker Photo Estimates: How Close Do They Get?
An AI food tracker reading a photo ran a third low in a 2026 NIH test. See five studies, a worked plate and five habits that close the gap.
Daniel Reyes · · 5 min readWhy Am I Not Losing Weight in a Calorie Deficit?
Why am I not losing weight in a calorie deficit? Usually the deficit is smaller than it feels. Three weeks at 0.5–1 kg a week should show 1.5–3 kg.
Daniel Reyes · · 6 min readIs Foodvisor Free? Photo Logging, Cost and Limits
Is Foodvisor free? The app is free to download. Barcode scans and manual logging cost nothing, while photo analysis needs Premium. Prices by country.
Daniel Reyes · · 5 min readHow Many Calories Over Maintenance to Gain a Pound?
How many calories over maintenance to gain a pound? About 3,500 kcal by the old rule, but 300–500 kcal a day is the practical surplus. See the math.
Daniel Reyes · · 6 min readCronometer Review: Free vs Gold and Who It Suits
Cronometer review: Basic is free with no time limit. Gold removes ads and adds photo logging and full history, from $59.99 a year on the US App Store.
Daniel Reyes · · 7 min readMacroFactor vs MyFitnessPal: Adaptive Targets or a Big Database
MacroFactor vs MyFitnessPal: weekly adaptive targets at $71.99 a year, or a 20.5M+ food database from $0. Dated prices, logging tools and export.
Daniel Reyes · · 5 min readMacroline App Alternative: Macro Targets Compared
A Macroline app alternative starts with the targets: a 30% protein split at 2,000 kcal is 150 g, or 2.1 g/kg at 70 kg. How to check any app.
Daniel Reyes · · 7 min readCal AI vs MyFitnessPal: Photo Logging or Search Logging
Cal AI vs MyFitnessPal: photo-first logging against search, who owns whom, prices and a plate where 1 tbsp of oil adds 119 kcal a photo can miss.
Daniel Reyes · · 5 min readMacroFactor vs Cronometer: Targets or Micronutrients?
MacroFactor vs Cronometer: one sets your target from your weight trend, the other tracks up to 95 nutrients. US yearly prices are $71.99 and $59.99.
Daniel Reyes · · 6 min readCronometer vs MyFitnessPal: Data, Price and Daily Use
Cronometer vs MyFitnessPal: Gold Annual was $59.99 and Annual Premium $79.99 on the US App Store. Compare food data, free tiers and daily use.
Daniel Reyes · · 6 min readMacroFactor Cost and Review: Is the Adaptive Coach Worth It?
MacroFactor cost: $71.99 a year or $11.99 a month on the US App Store, with a 7-day trial and no free version. See the per-day math and who it suits.
Daniel Reyes · · 5 min read
