Ive used this for 2 months and its never failed to wake me up. Having options for how to deactivate the alarm is a touch of genius, and two of these methods utilize your smartphones features well. My personal favorite way to wake up is by taking a big sip of water and doing five simple math problems. Once my body and mind have been stimulated I can fight the urge to fall back to sleep, which has always been a problem for me.
Anal Whisk about Alarmy Pro - Alarm Clock, v3.05