Calorie Tracker Guide · 2026-11-14
Verdict
Senza: Keto & Fasting is marked for Barcode scanner, Apple Health, Macro tracking. FreeStyle Libre 3 – US is not. Editorial scores are 3.2 for FreeStyle Libre 3 – US and 5.2 for Senza: Keto & Fasting, on a 10-point scale. That score is not the store rating.
Price
FreeStyle Libre 3 – US: Free.
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.
Fasting: only Senza: Keto & Fasting is marked available. Mentioned in the App Store description.
Fit
FreeStyle Libre 3 – US has no best-fit line.
Senza: Keto & Fasting has no best-fit line.
Where the scores differ
Feature depth: FreeStyle Libre 3 – US 0.8, Senza: Keto & Fasting 2.3. FreeStyle Libre 3 – US: 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: FreeStyle Libre 3 – US 0, Senza: Keto & Fasting 9. FreeStyle Libre 3 – US: Bayesian rating 2.92 (iOS 2.70x7497 + Play 3.01x13887, prior 4.3x200) + review stars sentiment -0.60 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: FreeStyle Libre 3 – US 6.5, Senza: Keto & Fasting 1.7. FreeStyle Libre 3 – US: Last release 22 days ago (half-life 90d, 70%) + median 112.5 days between releases (30%). Senza: Keto & Fasting: Last release 332 days ago (half-life 90d, 70%) + median 47 days between releases (30%).
Traction: FreeStyle Libre 3 – US 7.2, Senza: Keto & Fasting 6.8. FreeStyle Libre 3 – US: log10 of 21384 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.