This application provides a dual-timer for "interval training" or other various situations that are in need of a primary timer followed by a secondary timer. One example would be to run for 3 minutes and walk for 1 minute. Another example is to do as many sit-ups (or other exercise) as you can in 1 minute then rest for 1 minute and do it again! Each timer plays a different completion sound so you don’t have to keep looking at the screen. Just set your intervals, hit start, set your device in a safe place and go for it!This is the initial release and will just get better!