Calorie Tracker Guide · 2026-11-14
Verdict
Function Health is marked for Apple Health, Workout tracking. Dexcom Clarity is not. Editorial scores are 4.2 for Dexcom Clarity and 6.3 for Function Health, on a 10-point scale. That score is not the store rating.
Price
Dexcom Clarity: Free.
Function Health: Free.
Features that differ
Apple Health: only Function Health is marked available. Mentioned in the App Store description.
Workout tracking: only Function Health is marked available. Mentioned in the App Store description.
Fit
Dexcom Clarity has no best-fit line.
Function Health has no best-fit line.
Where the scores differ
Feature depth: Dexcom Clarity 1.1, Function Health 2.3. Dexcom Clarity: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10. Function Health: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10.
User feedback: Dexcom Clarity 5.9, Function Health 10. Dexcom Clarity: Bayesian rating 4.31 (iOS 4.60x13153 + Play 3.87x8508, prior 4.3x200) + review stars sentiment +0.15 over 20 reviews. Function Health: Bayesian rating 4.92 (iOS 4.93x25191 + Play 4.83x353, prior 4.3x200) + review stars sentiment +0.25 over 20 reviews.
Maintenance: Dexcom Clarity 1.5, Function Health 9. Dexcom Clarity: Last release 312 days ago (half-life 90d, 70%) + median 78 days between releases (30%). Function Health: Last release 9 days ago (half-life 90d, 70%) + median 6 days between releases (30%).
Traction: Dexcom Clarity 7.2, Function Health 7.3. Dexcom Clarity: log10 of 21661 total ratings (iOS+Play), 1M ratings = 10. Function Health: log10 of 25544 total ratings (iOS+Play), 1M ratings = 10.
Who should pick which
Choose Function Health if you need Apple Health and Workout tracking.