Calorie Tracker Guide · 2026-11-14
Verdict
Dexcom Clarity prices as Free. Zero: Fasting & Food Tracker prices as Free · 3 in-app purchase option(s). Zero: Fasting & Food Tracker is marked for Photo logging, Apple Health, Macro tracking. Dexcom Clarity is not. Editorial scores are 4.2 for Dexcom Clarity and 7.3 for Zero: Fasting & Food Tracker, on a 10-point scale. That score is not the store rating.
Price
Dexcom Clarity: Free.
Zero: Fasting & Food Tracker: Free · 3 in-app purchase option(s).
Monthly figure: Dexcom Clarity unknown, Zero: Fasting & Food Tracker $9.99.
Yearly figure: Dexcom Clarity 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.
Apple Health: only Zero: Fasting & Food Tracker is marked available. Syncs weight and fasting data.
Macro tracking: only Zero: Fasting & Food Tracker is marked available. Focuses heavily on protein tracking via photo analysis.
Water tracking: only Zero: Fasting & Food Tracker is marked available. Dedicated water tracking with visual progress.
Fasting: only Zero: Fasting & Food Tracker is marked available. Primary functionality of the app.
Accuracy focus: only Zero: Fasting & Food Tracker is marked available. Relies on user input and photo analysis.
Fit
Dexcom Clarity 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: Dexcom Clarity 5, Zero: Fasting & Food Tracker 8. Dexcom Clarity: Quality rating of the accuracy feature (5 if unknown). Zero: Fasting & Food Tracker: Quality rating of the accuracy feature (5 if unknown).
Pricing value: Dexcom Clarity 10, Zero: Fasting & Food Tracker 5.8. Dexcom Clarity: 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: Dexcom Clarity 5, Zero: Fasting & Food Tracker 9. Dexcom Clarity: 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: Dexcom Clarity 1.1, Zero: Fasting & Food Tracker 7.7. Dexcom Clarity: 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: Dexcom Clarity 7, Zero: Fasting & Food Tracker 9.4. Dexcom Clarity: 60% easeOfUse + 40% beginner skill-level fit. Zero: Fasting & Food Tracker: 60% easeOfUse + 40% beginner skill-level fit.
User feedback: Dexcom Clarity 5.9, Zero: Fasting & Food Tracker 8.1. Dexcom Clarity: Bayesian rating 4.31 (iOS 4.60x13153 + Play 3.87x8508, prior 4.3x200) + review stars sentiment +0.15 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: Dexcom Clarity 1.5, Zero: Fasting & Food Tracker 9. Dexcom Clarity: Last release 312 days ago (half-life 90d, 70%) + median 78 days between releases (30%). Zero: Fasting & Food Tracker: Last release 2 days ago (half-life 90d, 70%) + median 12 days between releases (30%).
Traction: Dexcom Clarity 7.2, Zero: Fasting & Food Tracker 9.5. Dexcom Clarity: log10 of 21661 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 Zero: Fasting & Food Tracker if you need Photo logging and Apple Health.