Calorie Tracker Guide · 2026-11-14
Verdict
Fasting Tracker by Numify prices as Free · 8 in-app purchase option(s). Senza: Keto & Fasting prices as Free. Senza: Keto & Fasting is marked for Barcode scanner, Apple Health, Macro tracking. Fasting Tracker by Numify is not. Editorial scores are 5.3 for Fasting Tracker by Numify and 5.2 for Senza: Keto & Fasting, on a 10-point scale. That score is not the store rating.
Price
Fasting Tracker by Numify: Free · 8 in-app purchase option(s).
Senza: Keto & Fasting: Free.
Features that differ
Barcode scanner: only Senza: Keto & Fasting is marked available.
Apple Health: only Senza: Keto & Fasting is marked available. Mentioned in the App Store description.
Macro tracking: only Senza: Keto & Fasting is marked available. Mentioned in the App Store description.
Workout tracking: only Senza: Keto & Fasting is marked available. Mentioned in the App Store description.
Fit
Fasting Tracker by Numify has no best-fit line.
Senza: Keto & Fasting has no best-fit line.
Where the scores differ
Pricing value: Fasting Tracker by Numify 6.7, Senza: Keto & Fasting 10. Fasting Tracker by Numify: 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).
Feature depth: Fasting Tracker by Numify 1.9, Senza: Keto & Fasting 2.3. Fasting Tracker by Numify: 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.
User feedback: Fasting Tracker by Numify 8.5, Senza: Keto & Fasting 9. Fasting Tracker by Numify: Bayesian rating 4.69 (iOS 4.71x5942 + Play 0.00x0, prior 4.3x200) + review stars sentiment -0.05 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: Fasting Tracker by Numify 7.9, Senza: Keto & Fasting 1.7. Fasting Tracker by Numify: Last release 16 days ago (half-life 90d, 70%) + median 23 days between releases (30%). Senza: Keto & Fasting: Last release 332 days ago (half-life 90d, 70%) + median 47 days between releases (30%).
Traction: Fasting Tracker by Numify 6.3, Senza: Keto & Fasting 6.8. Fasting Tracker by Numify: log10 of 5942 total ratings (iOS+Play), 1M ratings = 10. Senza: Keto & Fasting: log10 of 12723 total ratings (iOS+Play), 1M ratings = 10.
Who should pick which
Choose Senza: Keto & Fasting if you need Barcode scanner and Apple Health.