So customizable and well explained I originally searched for an alarm because my LG G4's lowest volume setting for the alarm was still loud enough to jar me awake in the morning. This alarm allows a fade-in, and waking up to it is so much smoother. Love everything about it. So many possible settings, most of which I don't use, but it's nice to know they're there.
Finally I can wake up without my heart pounding out of my chest! This application is fantastic! Few applications anywhere have the level of help, detail, options,... This application is clearly well thought out and carefully designed! I was very impressed by the detailed, well-written instructions which were very easy to read and error free. And that was just my first impression! Lol. After using the gentle alarm I absolutely love it! It ex exactly what I was looking for and I must say something very close to what I would have come up with myself had i written it!
Jan 2017: has stopped working correctly (won't play selected song for alarm, no snooze/off buttons when it does go off). emailed developer 3 times over the last month with no response. very disappointed, as I've loved, and even purchased, this app. but it looks like it's not being supported any more. [Pixel XL, Android 7.1.1.]
The very best alarm clock there is for Android. I previously gave this app a poor review, but that was because I wasn't using it properly. The pre-alarm feature is worth the money in itself. Without fail, every day it wakes me up at the perfect time, able to get up immediately. It doesn't rely on sleep detection, which requires you to sleep with your phone or wear a watch to bed. It just uses a pre-alarm that wrong wake you unless you're ready, or until your main alarm goes off. It's brilliant. It also has loads of options and settings to get it to do what you want. Just needs an aesthetic upgrade.
UPDATE: No longer supported. Some bugs - e.g. I "skip next alarm" but it goes off anyway. Still a good one. (Original review: I love it but sometimes sleep through it - then the helpful dev pointed out the "safe alarm" option which finally resorts to a loud buzzing, if I still haven't woken. Thanks! Best alarm I've found on Play, and I've tried a bunch.)
Best alarm IT'S WORTH PAYING FOR! Just as an idea: add odd/even weeks separation. It's very useful feature for students! For example, I wake up at 7:00 at odd weeks fridays and at 8:30 at even weeks because i have some lesson once in 14 days.
Free smart alarm clock app with loud alarms & math problems for heavy sleepers