I recently released my app PomodoroApp to help me track my performance of applying Pomodoro Technique. The first feedback I got from the comments of this question is "Another one would be option to choose time interval different from 25 min." by multipole, a really nice user and early adapter.
I understand that less is more. Giving more options is actually bring more trouble to users. I've ever investigated that how much time should be in a Pomodoro, from the inventor's book, 25 minutes. I've using 25 minutes for months, and feel very comfortable.
So the question is: Do you always use 25 minutes work/5 minutes rest interval? If not, what's the interval you set and could you tell me more information about why you set your interval?
Thanks a bunch for reading. I just want to understand that how others play with Pomodoro Technique and make better software.