Authors describe errors in the barcode and in the carb calculation. It helps to show the underlying composition and the way it was calculated, and to allow a manual edit.
Which apps people use
These apps are mentioned in the breakdown of this job. Open each one to compare strengths and limits. The order of the list is not a ranking of fitness.
Rank 15. Review score: 63 out of 100. App Store rating: 4.8★ · 730,524 ratings
63of 100
Carb Manager is a specialized tracker with deep support for keto and low-carb diets: detailed macro tracking, fitness device sync, and a large recipe library genuinely help people stay on the diet.
Praised: Keto dieters note that detailed carb and sugar control helped lower blood sugar and achieve significant weight loss where other trackers fell short.
Complaints: The barcode scanner is unreliable, and keto-compatibility detection sometimes misfires on mixed recipes.
Best for: People on keto or a low-carb diet who need detailed carb control
Rank 23. Review score: 61 out of 100. App Store rating: 4.7★ · 82,100 ratings
61of 100
A specialized keto tracker with a good restaurant food database, built-in recipes, and ready-made meal plans. The main weakness is inaccurate macro data for manually added foods and almost all functionality locked behind a paywall.
Praised: Keto beginners especially value the ready-made meal plans and automatic macro ratio calculation for their goal.
Complaints: Macro data for basic foods (like chicken wings) diverge from reality, which throws off the daily carb count.
Best for: People just starting keto who want a ready plan without doing their own calculations
Rank 35. Review score: 55 out of 100. App Store rating: 4.6★ · 8,919 ratings
55of 100
For keto eating the app offers more customization depth than most alternatives, and long-term users genuinely maintain their weight for years. The main weaknesses are occasional total data loss and no fiber tracking for net carbs.
Praised: Keto veterans value the simple setup and the fact that the app keeps them on track without unnecessary noise.
Complaints: The app periodically wipes all history and saved favorite foods, forcing users to re-enter everything.
Best for: People following a keto diet who want a specialized tracker without clutter
Rank 8. Review score: 68 out of 100. App Store rating: 4.8★ · 18,053 ratings
68of 100
The strongest adaptive calorie algorithm tied to real metabolism, a great UI, and a fair price. The downsides are real: the nutrient database is rough in places, female physiology is not accounted for, and support is slow.
Praised: Adaptive calorie calculation based on actual body weight rather than formula-based activity estimates.
Complaints: The algorithm cuts calories to uncomfortable levels without explaining why, and adjusting manually is difficult.
Best for: Serious macro trackers willing to pay for a smart algorithm
Rank 10. Review score: 67 out of 100. App Store rating: 4.8★ · 7,861 ratings
67of 100
Carbon offers smart weekly macro adjustments based on real check-in data, and consistent users see convincing results. The weak points are a limited food database and an algorithm that sometimes prescribes dangerously low calories for active women.
Praised: The weekly check-in with automatic goal adjustment based on real progress replaces the work of a personal nutrition coach.
Complaints: The food database is too small for a varied diet: users constantly have to create products manually or accept inaccuracies.
Best for: Athletes and mindful users who want an adaptive macro plan based on real progress
