PlanK

PlanK, the best plank logging app, we keep it rather simple and lightweight. This is a cool body builder, and it is helpful for keeping fit. PlanK not only count the time you do plank, but also record how many days do you keep on by punched card. Furthermore, we will also verify every time you break your own record.
Come on! Break through yourself! We are standing by you!
Features:
* Plank timer
* Record verification
* Statistics with punched card