Set intervals of different durations by using a simple timer for Android Strive Intervals. It is convenient to use for sports and trainings of different directions . Three built-in presets easy to customize to fit your needs and handling. The program has 2 modes short and long session, consisting of thirty cycles. You can at any time to put a pause during the performance and to take time to relax, and to select specific periods of activity (minimum increment is 5 seconds to 1 hour).