Case: Need a way to trigger a notification every X minutes (like 15, 20) to my program, which plays a notification. Pros: Experienced programmer Cons: Learning iPhone and OSX programming. Solution A: Run program in background? How? Solution B: Create a crontab simular event to trigger a event? How? PS: The interval (X minutes) should be able to be set from the program. Anyone could help point me in the right direction to look for a solution, if its possible?