Reconsider the permission.
This is very simple multi timer.
you can multi-countdown without some timers.
~Task Setting~
1. Add Task
2. Set Task time
3. Select Task
★Favorite
Easy access to Task setting.
★History
Executed Task is save and become One-Tap Task.
※Biology experiments are registered as Default Tasks.
Long click,you can delete Task.
※If you use Memory Clearn app, Mtimer don't work properly.