Compare software

SleepWatchSleepScore
Freemium

Free to use, with a Premium subscription for extra features.

 Freemium

Free to download, with paid features.

Android, iOS Android, iOS
  • Uses Apple Watch heart rate, HRV and blood oxygen data
  • Activity tagging to link habits with sleep quality
  • Tracks sleep without a watch or band
  • Sleep stage breakdown with a nightly score
  • Richest data depends on owning an Apple Watch
  • Some features require Premium
  • Phone sonar estimates are less direct than wearable sensors
  • Some features sit behind a paid tier
Downloadable app Downloadable app
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.