I really like this timer, it is very useful for trying to pace yourself, but it could use a few improvements. The simplicity of the app is wonderful and isnt distracting from its purpose, but in the inner circle it shows the current time and the time when the current session will complete, it would be very nice to have an option for 12-hour time instead of 24-hour time; this part is useless if you dont use 24-hour time.
Woahcoolness about Concentrate! timer