I know that a lot of you have been having issues with this app. I thought that I'd try to make some suggestions that could or could not solve things. - Make sure that you press the "Turn on alarm" check box at the very top of an alarm. I've missed it once before (my first time) and thought it was on because I pressed "Done" and even though it said that it was set for "6 hours and 53 minutes from now", it wasn't activated. - Turn on "Vibrate" and have it rest on a wooden surface, like a night stand for example. - Have "Repeat" set to the day that you want it on, even if its just for that day. This has helped some people. - Have the "Backup alarm" on just in case. - Have the volume turned all the way up. This definitely wakes me up every time because it can get really loud, especially when you're sleepy. - Instead of playing one of the stock alarm ringtones, play an MP3 file. Play a song that can get loud, but I recommend to turn on "Volume" (which increases the volume gradually) so it doesn't startle you. - Make sure that the speaker on the back isn't at risk of any muffling by fabric. - Turn your phone over on its front to completely expose the speaker. Go ahead and try a test alarm with all of these in mind (like set it to go off in 2 minutes) and see how it works out. I've made my mistakes by accidentally leaving it on a T-shirt (which definitely muffled the sound), forgetting to turn up the volume loud enough, and by forgetting to actually press "Turn on alarm" (as previously stated). If any of those suggestions do not work out for you, then you're on your own with a 3rd party app. I'm perfectly content with how the app is.