SleepBot - SleepBot is a sleep tracking app available in Google Play and the Apple App Store.
Cron - Cron Calendar.
Sleep Cycle - Bio-alarm clock that wakes you up at optimal times based on your sleep patterns.
KosmoTime - The to do list with super powers
Puzzle Alarm Clock - Puzzle Alarm Clock is an Android-based application which gives a very different sleep monitoring services and an alarm clock module that works according to the user’s requirement.
Vimcal - Vimcal is the world’s fastest calendar, beautifully designed for people who work remotely and live in their calendars.