Calorie Tracker Guide · 2026-11-14
Verdict
Formula － weight loss diet app prices as Free · 10 in-app purchase option(s). Senza: Keto & Fasting prices as Free. Formula － weight loss diet app is marked for Audio logging, Micronutrients, Water tracking. Senza: Keto & Fasting is not. Senza: Keto & Fasting is marked for Workout tracking, Fasting. Formula － weight loss diet app is not. Editorial scores are 5.9 for Formula － weight loss diet app and 5.2 for Senza: Keto & Fasting, on a 10-point scale. That score is not the store rating.
Price
Formula － weight loss diet app: Free · 10 in-app purchase option(s).
Senza: Keto & Fasting: Free.
Monthly figure: Formula － weight loss diet app $29.99, Senza: Keto & Fasting unknown.
Features that differ
Audio logging: only Formula － weight loss diet app is marked available. Mentioned in the App Store description.
Micronutrients: only Formula － weight loss diet app is marked available. Mentioned in the App Store description.
Water tracking: only Formula － weight loss diet app is marked available. Mentioned in the App Store description.
Workout tracking: only Senza: Keto & Fasting is marked available. Mentioned in the App Store description.
Fasting: only Senza: Keto & Fasting is marked available. Mentioned in the App Store description.
Coach connection: only Formula － weight loss diet app is marked available. Mentioned in the App Store description.
Fit
Formula － weight loss diet app has no best-fit line.
Senza: Keto & Fasting has no best-fit line.
Where the scores differ
Pricing value: Formula － weight loss diet app 0, Senza: Keto & Fasting 10. Formula － weight loss diet app: 10 - annualised price $359.88/15 (+0.5 if free trial). Senza: Keto & Fasting: 10 - annualised price $0.00/15 (+0.5 if free trial).
Ease of use: Formula － weight loss diet app 7.8, Senza: Keto & Fasting 5. Formula － weight loss diet app: 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: Formula － weight loss diet app 3.6, Senza: Keto & Fasting 2.3. Formula － weight loss diet app: 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: Formula － weight loss diet app 8.6, Senza: Keto & Fasting 7. Formula － weight loss diet app: 60% easeOfUse + 40% beginner skill-level fit. Senza: Keto & Fasting: 60% easeOfUse + 40% beginner skill-level fit.
User feedback: Formula － weight loss diet app 7.1, Senza: Keto & Fasting 9. Formula － weight loss diet app: Bayesian rating 4.44 (iOS 4.47x36067 + Play 4.26x4813, prior 4.3x200) + review stars sentiment +0.80 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: Formula － weight loss diet app 9.3, Senza: Keto & Fasting 1.7. Formula － weight loss diet app: Last release 4 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: Formula － weight loss diet app 7.7, Senza: Keto & Fasting 6.8. Formula － weight loss diet app: log10 of 40880 total ratings (iOS+Play), 1M ratings = 10. Senza: Keto & Fasting: log10 of 12723 total ratings (iOS+Play), 1M ratings = 10.
Coachability: Formula － weight loss diet app 5.5, Senza: Keto & Fasting 0. Formula － weight loss diet app: Best quality of aiCoach / coachConnection features. Senza: Keto & Fasting: Best quality of aiCoach / coachConnection features.
Who should pick which
Choose Formula － weight loss diet app if you need Audio logging and Micronutrients. Choose Senza: Keto & Fasting if you need Workout tracking and Fasting.