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Lemon

Best for: A free-to-start AI health coach that can read Apple Health or Fitbit

FitbitNo wearable requiredApple Watch
Websitehttps://lemonhealth.ai
PriceFree; Pro $9.99/mo or $69.99/yr
Works withApple Health, Fitbit (no native Apple Watch or Garmin)
iPhoneyes (iOS 14+)
Androidyes per one third-party source (unconfirmed)
Heart-rate variability (HRV)Not listed
Builds workoutsNot listed
Last checked2026-10-15

HRV = heart-rate variability — how much the time between beats changes; often used as a recovery signal.

Sources

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Affiliate disclosure: CoachStack may earn a commission if you buy through some links. As an Amazon Associate I earn from qualifying purchases. This never affects rankings or data. “Not listed” means we could not verify it from a public source yet.