I Can’t Wake Up
(requires Android 2.1 and up or iOS7)
Users must pass up to eight tests to stop this alarm.
play.google.com; itunes.apple.com $2.99 on Google Play; $1.99 on Apple iTunes (free versions available with less features)

Sleep Cycle
(requires iOS 5.0)
Tracks users’ sleep cycles and sounds during their lightest phase.
itunes.apple.com $0.99

Early Riser Guide

(January 2015)