Sleep as Android Full v20160514 build 1303
Requirements: 2.3 and up
Overview: Track your sleep and wake up gently with nature sounds in optimal sleep phase
Alarm clock with sleep cycle tracker. 

Smart alarm clock with sleep cycle tracking. Wakes you gently in optimal moment for ... http://www.apkformod.com/sleep-as-android-full-v20160514-build-1303/