Barcode Alarm Clock - Alarm clock that won't stop ringing until you scan a barcode
Alarmy - World's most annoying alarm app
Wakefy - Turn your Mac into a Spotify alarm clock.
Galarm - Social alarm clock and reminders
WalkMe - WalkMe is a game-changing platform that instantly simplifies the online user experience.
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.