Calorie Tracker Guide · 2026-11-14
Verdict
CalZen AI Food Calorie Counter prices as Free · 9 in-app purchase option(s). Senza: Keto & Fasting prices as Free. CalZen AI Food Calorie Counter is marked for Photo logging, Text logging, Micronutrients. Senza: Keto & Fasting is not. Senza: Keto & Fasting is marked for Barcode scanner, Fasting. CalZen AI Food Calorie Counter is not. Editorial scores are 7.8 for CalZen AI Food Calorie Counter and 5.2 for Senza: Keto & Fasting, on a 10-point scale. That score is not the store rating.
Price
CalZen AI Food Calorie Counter: Free · 9 in-app purchase option(s).
Senza: Keto & Fasting: Free.
Monthly figure: CalZen AI Food Calorie Counter $19.99, Senza: Keto & Fasting unknown.
Yearly figure: CalZen AI Food Calorie Counter $49.99, Senza: Keto & Fasting unknown.
Features that differ
Photo logging: only CalZen AI Food Calorie Counter is marked available. Core feature for calorie and macro tracking via photo. User reviews indicate accuracy issues with portion size estimation.
Text logging: only CalZen AI Food Calorie Counter is marked available. Allows users to manually describe food for AI analysis, useful for missed photos or specific details.
Barcode scanner: only Senza: Keto & Fasting is marked available.
Micronutrients: only CalZen AI Food Calorie Counter is marked available. Fiber is shown in macro breakdown, suggesting limited micronutrient tracking beyond primary macros.
Water tracking: only CalZen AI Food Calorie Counter is marked available. Integrates with Apple Health to sync water intake.
Fasting: only Senza: Keto & Fasting is marked available. Mentioned in the App Store description.
Accuracy focus: only CalZen AI Food Calorie Counter is marked available. User reviews specifically highlight issues with the AI's accuracy in estimating portion sizes and calorie counts from photos.
Fit
CalZen AI Food Calorie Counter is filed for Quick Calorie Logging — Individuals who prioritize speed and convenience in logging meals using AI photo recognition.; Macro Tracking — Users focused on monitoring their protein, fat, and carbohydrate intake for specific dietary goals.; Weight Management — Anyone looking to track weight progress and manage calorie deficits or surpluses to reach a target weight..
Senza: Keto & Fasting has no best-fit line.
Where the scores differ
Accuracy: CalZen AI Food Calorie Counter 2, Senza: Keto & Fasting 5. CalZen AI Food Calorie Counter: Quality rating of the accuracy feature (5 if unknown). Senza: Keto & Fasting: Quality rating of the accuracy feature (5 if unknown).
Pricing value: CalZen AI Food Calorie Counter 7.2, Senza: Keto & Fasting 10. CalZen AI Food Calorie Counter: 10 - annualised price $49.99/15 (+0.5 if free trial). Senza: Keto & Fasting: 10 - annualised price $0.00/15 (+0.5 if free trial).
Ease of use: CalZen AI Food Calorie Counter 9, Senza: Keto & Fasting 5. CalZen AI Food Calorie Counter: 5 + 5 x best quality of fast-logging features (AI image/text/audio, barcode). Senza: Keto & Fasting: 5 + 5 x best quality of fast-logging features (AI image/text/audio, barcode).
Feature depth: CalZen AI Food Calorie Counter 8.3, Senza: Keto & Fasting 2.3. CalZen AI Food Calorie Counter: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10. Senza: Keto & Fasting: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10.
Beginner friendliness: CalZen AI Food Calorie Counter 9.4, Senza: Keto & Fasting 7. CalZen AI Food Calorie Counter: 60% easeOfUse + 40% beginner skill-level fit. Senza: Keto & Fasting: 60% easeOfUse + 40% beginner skill-level fit.
User feedback: CalZen AI Food Calorie Counter 8.7, Senza: Keto & Fasting 9. CalZen AI Food Calorie Counter: Bayesian rating 4.73 (iOS 4.74x3122 + Play 4.73x198033, prior 4.3x200) + review stars sentiment -0.10 over 20 reviews. Senza: Keto & Fasting: Bayesian rating 4.72 (iOS 4.78x10816 + Play 4.44x1907, prior 4.3x200) + review stars sentiment +0.45 over 20 reviews.
Maintenance: CalZen AI Food Calorie Counter 8.8, Senza: Keto & Fasting 1.7. CalZen AI Food Calorie Counter: Last release 14 days ago (half-life 90d, 70%) + median 6 days between releases (30%). Senza: Keto & Fasting: Last release 332 days ago (half-life 90d, 70%) + median 47 days between releases (30%).
Traction: CalZen AI Food Calorie Counter 8.8, Senza: Keto & Fasting 6.8. CalZen AI Food Calorie Counter: log10 of 201155 total ratings (iOS+Play), 1M ratings = 10. Senza: Keto & Fasting: log10 of 12723 total ratings (iOS+Play), 1M ratings = 10.
Coachability: CalZen AI Food Calorie Counter 8, Senza: Keto & Fasting 0. CalZen AI Food Calorie Counter: Best quality of aiCoach / coachConnection features. Senza: Keto & Fasting: Best quality of aiCoach / coachConnection features.
Who should pick which
Choose CalZen AI Food Calorie Counter if you need Photo logging and Text logging. Choose Senza: Keto & Fasting if you need Barcode scanner and Fasting.