Easy to use High Intensity Interval Training timer. Just set your workout duration, workouts per set, and number of sets and it will give you visual, audio, and haptic cues so you know when it's time to rest and when to start a new exercise.
Using this app is completely free. Even if premium paid features are added down the road, the core timer functionality will remain accessible at no cost.
To report any issues or submit feature requests, plase send an email to firstname.lastname@example.org.