It is Pomodoro timer plugin for ErrBot Support your life cycle with Pomdoro Technique.
See it
!repos install https://github.com/attakei/errbot-pomodoro-timer.git
>>> !pomodoro start
On backend, timer counts 25 minutes for working and 5 minutes for resting..
Uuntil program had been stopped or be caught stop command, it run loop.
>>> !pomodoro stop