Calorie Tracker Guide · 2026-11-14
Verdict
Dexcom Clarity prices as Free. Happy Scale prices as Free · 8 in-app purchase option(s). Happy Scale is marked for Apple Health. Dexcom Clarity is not. Editorial scores are 4.2 for Dexcom Clarity and 6.1 for Happy Scale, on a 10-point scale. That score is not the store rating.
Price
Dexcom Clarity: Free.
Happy Scale: Free · 8 in-app purchase option(s).
Monthly figure: Dexcom Clarity unknown, Happy Scale $1.99.
Yearly figure: Dexcom Clarity unknown, Happy Scale $11.99.
Features that differ
Apple Health: only Happy Scale is marked available. Mentioned in the App Store description.
Fit
Dexcom Clarity has no best-fit line.
Happy Scale has no best-fit line.
Where the scores differ
Pricing value: Dexcom Clarity 10, Happy Scale 9.2. Dexcom Clarity: 10 - annualised price $0.00/15 (+0.5 if free trial). Happy Scale: 10 - annualised price $11.99/15 (+0.5 if free trial).
Feature depth: Dexcom Clarity 1.1, Happy Scale 1.5. Dexcom Clarity: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10. Happy Scale: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10.
User feedback: Dexcom Clarity 5.9, Happy Scale 10. Dexcom Clarity: Bayesian rating 4.31 (iOS 4.60x13153 + Play 3.87x8508, prior 4.3x200) + review stars sentiment +0.15 over 20 reviews. Happy Scale: Bayesian rating 4.89 (iOS 4.89x58217 + Play 0.00x0, prior 4.3x200) + review stars sentiment +0.90 over 20 reviews.
Maintenance: Dexcom Clarity 1.5, Happy Scale 9.3. Dexcom Clarity: Last release 312 days ago (half-life 90d, 70%) + median 78 days between releases (30%). Happy Scale: Last release 2 days ago (half-life 90d, 70%) + median 8 days between releases (30%).
Traction: Dexcom Clarity 7.2, Happy Scale 7.9. Dexcom Clarity: log10 of 21661 total ratings (iOS+Play), 1M ratings = 10. Happy Scale: log10 of 58217 total ratings (iOS+Play), 1M ratings = 10.
Who should pick which
Choose Happy Scale if you need Apple Health.