I agree that this app seems a perfect match for iPhone owning meditators. I also agree that this app is a bit limited if you have auto-lock set on your phone - the phone locks and the alarm will not wake the phone. Im not sure if the SDK gives the developer access to wake the device, but if it does it would be nice - saves energy by shutting off the screen yet still is functional. Having the screen off is also nice as it prevents "peeking" at the time for those whose concentration might be wandering. All said this could soon be a 5 star app and would be used twice daily by many users.
McYogi about Meditation Timer