Pretty much useless
I had high hopes for this app, but since it is rendered useless after a couple of minutes when the phone goes to sleep and the screen goes black Ill have to just recommend using the timer that comes pre-installed on the iPhone. Hopefully there will be an update that either keeps the iPhone awake while the program is running or wakes up the phone and sounds the chime when the timer is up. Until then...
stlredbird about
Meditation Timer