I was about to do something similar myself and you might have saved me the trouble. But a few things are missing: 1. Add ability to set alarms. The reminder isnt noticeable so it cant be used effectively to wake up with sunrise as a reference. 2) use a picker instead of the list for setting alarms. Your list maxes out at 2 hours which means you cant set a bedtime alarm based on sunrise. I want to set an alarm that tells me when to go to bed for 8 hours of sleep based on getting up relative to sunup. That means I also need an alert some time before that to get ready for bed. Build in some flexibility. 3. Let people enter their location instead of having the gps drain their battery. 3 stars for potential, but without at least the first two suggestions this app doesnt get used until it gets an update.