This is a timer app designed for step exercise. FEATURES 1. Guide sounds for stepping up and down A guide sound (such as a whistle) will be played at each step-up timing of step exercise. Even if you are not looking at the screen, you can step up and down with a constant tempo. 2. Working in background This app is running in background. The timer (and notification tone) can work even when the screen of this app is not displayed. 3. Timer stops at incoming call If a phone call comes