Would be good if the app didn't do the "how to use" tutorial every time it starts. When the timer is set and you press "on" it would be good if the app would count down (and turn off) even after the user has pressed the home button. Handy when you want to set it for a 60 second burst and you want to put your phone back in your pocket asap!!
A Cordova showcase application with a bunch of plugins and available code.