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Sleep Cycle vs AutoSleep: catalog facts
Sleep Cycle	AutoSleep
Freemium Free to download, with premium features offered through a subscription after a free trial.	Paid Sold on the App Store without a subscription.
Android, iOS	iOS
Sleep tracking with only a phone Smart alarm that wakes you in lighter sleep	Tracks sleep automatically without starting a session All data kept on the device with no analytics or ads
Main features are pushed toward a paid subscription Sound-based tracking is an estimate	Requires an Apple Watch and iPhone Not available on Android
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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