Calorie Tracker Guide · 2026-11-14
Verdict
Senza: Keto & Fasting prices as Free. Withings prices as Free · 3 in-app purchase option(s). Senza: Keto & Fasting is marked for Barcode scanner, Macro tracking, Fasting. Withings is not. Withings is marked for Coach connection. Senza: Keto & Fasting is not. Editorial scores are 5.2 for Senza: Keto & Fasting and 5.8 for Withings, on a 10-point scale. That score is not the store rating.
Price
Senza: Keto & Fasting: Free.
Withings: Free · 3 in-app purchase option(s).
Monthly figure: Senza: Keto & Fasting unknown, Withings $9.99.
Yearly figure: Senza: Keto & Fasting unknown, Withings $99.99.
Features that differ
Barcode scanner: only Senza: Keto & Fasting is marked available.
Macro 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 Withings is marked available. Mentioned in the App Store description.
Fit
Senza: Keto & Fasting has no best-fit line.
Withings has no best-fit line.
Where the scores differ
Pricing value: Senza: Keto & Fasting 10, Withings 3.3. Senza: Keto & Fasting: 10 - annualised price $0.00/15 (+0.5 if free trial). Withings: 10 - annualised price $99.99/15 (+0.5 if free trial).
Feature depth: Senza: Keto & Fasting 2.3, Withings 2.7. Senza: Keto & Fasting: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10. Withings: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10.
User feedback: Senza: Keto & Fasting 9, Withings 7. Senza: Keto & Fasting: Bayesian rating 4.72 (iOS 4.78x10816 + Play 4.44x1907, prior 4.3x200) + review stars sentiment +0.45 over 20 reviews. Withings: Bayesian rating 4.50 (iOS 4.58x370370 + Play 4.36x230469, prior 4.3x200) + review stars sentiment -0.30 over 20 reviews.
Maintenance: Senza: Keto & Fasting 1.7, Withings 8.8. Senza: Keto & Fasting: Last release 332 days ago (half-life 90d, 70%) + median 47 days between releases (30%). Withings: Last release 5 days ago (half-life 90d, 70%) + median 14 days between releases (30%).
Traction: Senza: Keto & Fasting 6.8, Withings 9.6. Senza: Keto & Fasting: log10 of 12723 total ratings (iOS+Play), 1M ratings = 10. Withings: log10 of 600839 total ratings (iOS+Play), 1M ratings = 10.
Coachability: Senza: Keto & Fasting 0, Withings 5.5. Senza: Keto & Fasting: Best quality of aiCoach / coachConnection features. Withings: Best quality of aiCoach / coachConnection features.
Who should pick which
Choose Senza: Keto & Fasting if you need Barcode scanner and Macro tracking. Choose Withings if you need Coach connection.