Barcode Alarm Clock - Alarm clock that won't stop ringing until you scan a barcode
Alarmy - World's most annoying alarm app
Wake N Shake Alarm Clock - Wake up with a jolt of energy ready to get shit done.
Galarm - Social alarm clock and reminders
Alarm Buddy - Alarm Buddy is a fun alarm app that helps you wake up by playing simple, cute and engaging games.
Alarm Clock Xtreme - Alarm Clock Xtreme: Alarm, Stopwatch, Timer (Free) is the most popular alarm clock app created and published by AVG Labs for both iOS and Android devices.