Calorie Tracker Guide · 2026-11-14
Verdict
Key to Health: Metabolic AI prices as Free · 4 in-app purchase option(s). Weight Loss Bet by HealthyWage prices as Free. Weight Loss Bet by HealthyWage is marked for Photo logging, Apple Health, Workout tracking. Key to Health: Metabolic AI is not. Editorial scores are 5.4 for Key to Health: Metabolic AI and 5.9 for Weight Loss Bet by HealthyWage, on a 10-point scale. That score is not the store rating.
Price
Key to Health: Metabolic AI: Free · 4 in-app purchase option(s).
Weight Loss Bet by HealthyWage: Free.
Monthly figure: Key to Health: Metabolic AI $99.99, Weight Loss Bet by HealthyWage unknown.
Yearly figure: Key to Health: Metabolic AI $95.99, Weight Loss Bet by HealthyWage unknown.
Features that differ
Photo logging: only Weight Loss Bet by HealthyWage is marked available. Mentioned in the App Store description.
Apple Health: only Weight Loss Bet by HealthyWage is marked available. Mentioned in the App Store description.
Workout tracking: only Weight Loss Bet by HealthyWage is marked available. Mentioned in the App Store description.
Fit
Key to Health: Metabolic AI has no best-fit line.
Weight Loss Bet by HealthyWage has no best-fit line.
Where the scores differ
Pricing value: Key to Health: Metabolic AI 4.1, Weight Loss Bet by HealthyWage 10. Key to Health: Metabolic AI: 10 - annualised price $95.99/15 (+0.5 if free trial). Weight Loss Bet by HealthyWage: 10 - annualised price $0.00/15 (+0.5 if free trial).
Ease of use: Key to Health: Metabolic AI 5, Weight Loss Bet by HealthyWage 7.8. Key to Health: Metabolic AI: 5 + 5 x best quality of fast-logging features (AI image/text/audio, barcode). Weight Loss Bet by HealthyWage: 5 + 5 x best quality of fast-logging features (AI image/text/audio, barcode).
Feature depth: Key to Health: Metabolic AI 1.1, Weight Loss Bet by HealthyWage 2.3. Key to Health: Metabolic AI: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10. Weight Loss Bet by HealthyWage: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10.
Beginner friendliness: Key to Health: Metabolic AI 7, Weight Loss Bet by HealthyWage 8.6. Key to Health: Metabolic AI: 60% easeOfUse + 40% beginner skill-level fit. Weight Loss Bet by HealthyWage: 60% easeOfUse + 40% beginner skill-level fit.
User feedback: Key to Health: Metabolic AI 7.9, Weight Loss Bet by HealthyWage 8.5. Key to Health: Metabolic AI: Bayesian rating 4.59 (iOS 4.75x2256 + Play 2.72x165, prior 4.3x200) + review stars sentiment +0.15 over 20 reviews. Weight Loss Bet by HealthyWage: Bayesian rating 4.71 (iOS 4.79x17871 + Play 4.51x6558, prior 4.3x200) + review stars sentiment -0.20 over 20 reviews.
Maintenance: Key to Health: Metabolic AI 8.8, Weight Loss Bet by HealthyWage 7. Key to Health: Metabolic AI: Last release 2 days ago (half-life 90d, 70%) + median 16 days between releases (30%). Weight Loss Bet by HealthyWage: Last release 43 days ago (half-life 90d, 70%) + median 15 days between releases (30%).
Traction: Key to Health: Metabolic AI 5.6, Weight Loss Bet by HealthyWage 7.3. Key to Health: Metabolic AI: log10 of 2421 total ratings (iOS+Play), 1M ratings = 10. Weight Loss Bet by HealthyWage: log10 of 24429 total ratings (iOS+Play), 1M ratings = 10.
Coachability: Key to Health: Metabolic AI 5.5, Weight Loss Bet by HealthyWage 0. Key to Health: Metabolic AI: Best quality of aiCoach / coachConnection features. Weight Loss Bet by HealthyWage: Best quality of aiCoach / coachConnection features.
Who should pick which
Choose Weight Loss Bet by HealthyWage if you need Photo logging and Apple Health.