Is there an alarm clock app to replace Sleep Cycle?

Hi everyone:

I've been using the Sleep Cycle accelerometer-based alarm clock app for a while now. This one:

https://itunes.apple.com/app/apple-store/id320606217?mt=8

But since very recently the app seems to be using up all of my battery overnight, which it didn't do before, and shuts down the phone. It also started to make my iPhone very hot to the touch in the morning. Besides that, when the app is activated and I lock the screen (which I do obviously for security reasons) the app blocks all text message sounds, which is also bad.

So I was curious if there's any other app (paid or free) that you would recommend that could replace it? (From those who tried them.)

Thanks in advance!