Compare software

Plees TrackerSleepScore
Free

Free and open source under the MIT license.

 Freemium

Free to download, with paid features.

Android Android, iOS
  • No battery drain while you sleep
  • Stores past sleeps and shows the daily average
  • Tracks sleep without a watch or band
  • Sleep stage breakdown with a nightly score
  • Manual start and stop only, no sensor-based sleep analysis
  • Android only
  • Phone sonar estimates are less direct than wearable sensors
  • Some features sit behind a paid tier
Downloadable app Downloadable app
Open source Closed source
License: MIT 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 October 2, 2026

Checked September 23, 2026

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