CorrelateRecovery. Strain. Sleep. Readiness.
From the Apple Watch you already wear.
Correlate turns your Apple Health data into the daily readiness, recovery, and strain scores you'd expect from a dedicated fitness band or smart ring — with no extra hardware, no monthly subscription, and nothing ever leaving your iPhone.
$4.99one-time · no subscription · ever
What you get
Everything runs on your iPhone. No accounts, no cloud uploads, no tracking.
Auto-Discovery
Finds real correlations (Pearson r) in your data. Clearly labeled: correlation, not causation.
Recovery, Strain & Sleep
Daily rings plus a Health Score — one number for how your body is trending.
Import Oura & WHOOP
On-device import of official exports. No account linking required.
100% on-device
Total privacy
No accounts. No cloud uploads. No tracking.
Your health data never leaves your phone.
Data Not CollectedNo subscriptionsNo monthly fees
Stop renting your health insights
Own them.
$4.99 one-time purchase