Calorie Tracker Guide · 2026-11-14
Verdict
Senza: Keto & Fasting prices as Free. Zero: Fasting & Food Tracker prices as Free · 3 in-app purchase option(s). Senza: Keto & Fasting is marked for Barcode scanner, Workout tracking. Zero: Fasting & Food Tracker is not. Zero: Fasting & Food Tracker is marked for Photo logging, Water tracking, Accuracy focus. Senza: Keto & Fasting is not. Editorial scores are 5.2 for Senza: Keto & Fasting and 7.3 for Zero: Fasting & Food Tracker, on a 10-point scale. That score is not the store rating.
Price
Senza: Keto & Fasting: Free.
Zero: Fasting & Food Tracker: Free · 3 in-app purchase option(s).
Monthly figure: Senza: Keto & Fasting unknown, Zero: Fasting & Food Tracker $9.99.
Yearly figure: Senza: Keto & Fasting unknown, Zero: Fasting & Food Tracker $69.99.
Features that differ
Photo logging: only Zero: Fasting & Food Tracker is marked available. Uses photo recognition to estimate macros and protein content.
Barcode scanner: only Senza: Keto & Fasting is marked available.
Water tracking: only Zero: Fasting & Food Tracker is marked available. Dedicated water tracking with visual progress.
Workout tracking: only Senza: Keto & Fasting is marked available. Mentioned in the App Store description.
Accuracy focus: only Zero: Fasting & Food Tracker is marked available. Relies on user input and photo analysis.
Fit
Senza: Keto & Fasting has no best-fit line.
Zero: Fasting & Food Tracker is filed for Intermittent Fasting Beginners — Provides clear structure and educational content to start a fasting routine.; Protein-Focused Dieters — Ideal for those wanting to track protein intake alongside fasting windows..
Where the scores differ
Accuracy: Senza: Keto & Fasting 5, Zero: Fasting & Food Tracker 8. Senza: Keto & Fasting: Quality rating of the accuracy feature (5 if unknown). Zero: Fasting & Food Tracker: Quality rating of the accuracy feature (5 if unknown).
Pricing value: Senza: Keto & Fasting 10, Zero: Fasting & Food Tracker 5.8. Senza: Keto & Fasting: 10 - annualised price $0.00/15 (+0.5 if free trial). Zero: Fasting & Food Tracker: 10 - annualised price $69.99/15 (+0.5 if free trial).
Ease of use: Senza: Keto & Fasting 5, Zero: Fasting & Food Tracker 9. Senza: Keto & Fasting: 5 + 5 x best quality of fast-logging features (AI image/text/audio, barcode). Zero: Fasting & Food Tracker: 5 + 5 x best quality of fast-logging features (AI image/text/audio, barcode).
Feature depth: Senza: Keto & Fasting 2.3, Zero: Fasting & Food Tracker 7.7. Senza: Keto & Fasting: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10. Zero: Fasting & Food Tracker: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10.
Beginner friendliness: Senza: Keto & Fasting 7, Zero: Fasting & Food Tracker 9.4. Senza: Keto & Fasting: 60% easeOfUse + 40% beginner skill-level fit. Zero: Fasting & Food Tracker: 60% easeOfUse + 40% beginner skill-level fit.
User feedback: Senza: Keto & Fasting 9, Zero: Fasting & Food Tracker 8.1. Senza: Keto & Fasting: Bayesian rating 4.72 (iOS 4.78x10816 + Play 4.44x1907, prior 4.3x200) + review stars sentiment +0.45 over 20 reviews. Zero: Fasting & Food Tracker: Bayesian rating 4.69 (iOS 4.82x445336 + Play 3.74x61213, prior 4.3x200) + review stars sentiment -0.75 over 20 reviews.
Maintenance: Senza: Keto & Fasting 1.7, Zero: Fasting & Food Tracker 9. Senza: Keto & Fasting: Last release 332 days ago (half-life 90d, 70%) + median 47 days between releases (30%). Zero: Fasting & Food Tracker: Last release 2 days ago (half-life 90d, 70%) + median 12 days between releases (30%).
Traction: Senza: Keto & Fasting 6.8, Zero: Fasting & Food Tracker 9.5. Senza: Keto & Fasting: log10 of 12723 total ratings (iOS+Play), 1M ratings = 10. Zero: Fasting & Food Tracker: log10 of 506549 total ratings (iOS+Play), 1M ratings = 10.
Who should pick which
Choose Senza: Keto & Fasting if you need Barcode scanner and Workout tracking. Choose Zero: Fasting & Food Tracker if you need Photo logging and Water tracking.