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SleepWatch vs Sleep as Android: catalog facts
SleepWatch	Sleep as Android
Freemium Free to use, with a Premium subscription for extra features.	Freemium Free to try, with paid features unlocked by purchase.
Android, iOS	Android
Uses Apple Watch heart rate, HRV and blood oxygen data Activity tagging to link habits with sleep quality	Smart alarm based on sleep phase tracking Works with phone sensors or wearables
Richest data depends on owning an Apple Watch Some features require Premium	Android only Large feature set can take time to configure
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
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.