There are two timer types available:
Interval timer - easy to use timer with reminder based on starting time and repeating interval in hours and minutes. For example starting at 3.00 PM and repeating every 8 hours.
Times-of-Day timer - easy to set timer with reminder based on starting day and defined everyday acting times. For example timer starting today and acting everyday at 9.00 AM, 1.00 PM and 3 PM. It is convenient shortcut for three interval timers with interval of 24 hours.
Be careful with usage of app killers, they can remove scheduled events from memory.
Feel free to send me your comments & requests on firstname.lastname@example.org or to see my site at http://tools4droid.com.
Use very carefully - it is still in Beta version for testing purposes.