Sports Interval Timer

A simple and lightweight timer app for various sports activities like
* Boxing
* Interval training
* Tabatas
* Circuit training

Possible settings:
* round time
* rest time
* number of rounds
* toggle playback for indicating sounds (begin round, end round, halftime, "get ready")
* halftime sound can be toggled individually

The settings are saved automatically, so that once configured you can start your workout immediately when launching the app the next time. You can have your favorite music app play music in the background. The indicating sounds will blend in.