Thanks for the link
Works well so far. However, there should be a possibility (countdown 5 sec.?) to disable the alarm before it goes off. Otherwise it will go off every time, even if you take the phone yourself ;-)
Also, you can turn the volume to 00 zero and the alarm stops, which is not really a good idea, the alarm should keep on going even if you turn the volume down.
Nice idea, but could do with some improvements...