Puzzle Alarm Clock is a hardcore alarm app with gentle colors

The problem with most alarm clocks (or alarm apps) is that they never check whether we're awake enough before we're allowed to turn them off... and go back snoozing. It takes another level of discipline to push alarm innovation forward, and this is what Puzzle Alarm Clock is about. This must be the only alarm app in the world to force you to disable it by placing your phone on a NFC tag, or scanning a QR code. Only if you want to have it that way, of course.

If that isn't enough to get you out of bed, the app can come up with random puzzles to solve on the alarm's onset - math problems, memory cards, captcha patterns, you name it. And you can have up to five puzzles with three difficulty levels to solve in a row - which, hopefully, won't take you an entire morning!

Additionally, Puzzle Alarm Clock can set an app to launch automatically after an alarm expires, and comes with a loud explosion sound that could wake your neighbours if you put it through an external speaker. There are also 'time to bed' notifications, 'next alarm' notifications, and the most hardcore feature ever - sending an SMS to an emergency contact in case you don't turn off the alarm in time.

Puzzle Alarm Clock is a free Android exclusive.