The native iOS alarm has always had a flaw that bothers me: I set a lot of one-time alarms, which leaves me with a cluttered, endless list of old alarms. Alarm One solves this problem for you. With its 'burn after use' feature, alarms are automatically deleted after they ring, so you never have to worry about a messy alarm list again. On top of that, Alarm One allows you to set alarms for specific dates and upload custom ringtones.