I really want to like this app. When it actually works, it is very effective. However, the alarm was only actually going off about 25% of the time. I contacted app support and was told that in order for it to work I would need to leave the app open and the screen unlocked all night. I am not willing to trust an alarm I cant set and forget. Having to remember to leave the app open and change my device settings every night (in order to leave the screen unlocked) is a deal breaker, not to mention a huge security risk.