Calorie Tracker Guide · 2026-11-14
Verdict
Dexcom Clarity prices as Free. Water tracker Waterllama prices as Free · 5 in-app purchase option(s). Water tracker Waterllama is marked for Apple Health, Water tracking, Workout tracking. Dexcom Clarity is not. Editorial scores are 4.2 for Dexcom Clarity and 6.4 for Water tracker Waterllama, on a 10-point scale. That score is not the store rating.
Price
Dexcom Clarity: Free.
Water tracker Waterllama: Free · 5 in-app purchase option(s).
Monthly figure: Dexcom Clarity unknown, Water tracker Waterllama $0.99.
Features that differ
Apple Health: only Water tracker Waterllama is marked available. Mentioned in the App Store description.
Water tracking: only Water tracker Waterllama is marked available. Mentioned in the App Store description.
Workout tracking: only Water tracker Waterllama is marked available. Mentioned in the App Store description.
Fasting: only Water tracker Waterllama is marked available. Mentioned in the App Store description.
Fit
Dexcom Clarity has no best-fit line.
Water tracker Waterllama has no best-fit line.
Where the scores differ
Pricing value: Dexcom Clarity 10, Water tracker Waterllama 9.2. Dexcom Clarity: 10 - annualised price $0.00/15 (+0.5 if free trial). Water tracker Waterllama: 10 - annualised price $11.88/15 (+0.5 if free trial).
Feature depth: Dexcom Clarity 1.1, Water tracker Waterllama 2.7. Dexcom Clarity: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10. Water tracker Waterllama: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10.
User feedback: Dexcom Clarity 5.9, Water tracker Waterllama 10. Dexcom Clarity: Bayesian rating 4.31 (iOS 4.60x13153 + Play 3.87x8508, prior 4.3x200) + review stars sentiment +0.15 over 20 reviews. Water tracker Waterllama: Bayesian rating 4.87 (iOS 4.87x164759 + Play 3.71x114, prior 4.3x200) + review stars sentiment +0.90 over 20 reviews.
Maintenance: Dexcom Clarity 1.5, Water tracker Waterllama 8.3. Dexcom Clarity: Last release 312 days ago (half-life 90d, 70%) + median 78 days between releases (30%). Water tracker Waterllama: Last release 11 days ago (half-life 90d, 70%) + median 18 days between releases (30%).
Traction: Dexcom Clarity 7.2, Water tracker Waterllama 8.7. Dexcom Clarity: log10 of 21661 total ratings (iOS+Play), 1M ratings = 10. Water tracker Waterllama: log10 of 164873 total ratings (iOS+Play), 1M ratings = 10.
Who should pick which
Choose Water tracker Waterllama if you need Apple Health and Water tracking.