I love this app. I recharge my phone overnight every night so not to worry about battery drain. Only flaw is that if you get an alert or text overnight the clock doesnt work. I put it in airplane mode but it would be nice if there were an option to turn off alerts and/or texts while the clock is on. Update: Clock wont stay on now that I updated to OS 4.0. (neither will app box pros clock, but at least theirs seems to keep running in the background). Until thats fixed, this app is useless.