@eezo:

Does the sound turn off entirely? Or just for a few seconds?

The intrusiveness is pretty much intentional, though I could probably get away with less (e.g. make it a normal window so you can use other applications). Will need to think about that.
Surprisingly, you can take incoming calls, though you have to kill the phone app (in background) via "End current task" to disconnect

You can get the previous version here:
http://filebin.ca/kvtrqu/evilalarm_0.2_armel.deb