ProTimer lets you control your workout training or any other activity which requieres preparation, work and rest intervals(you can set some of those to zero time and just use the needed ones), it provides sound and visual alarms so you are aware of the current activity to perform, The app works on mobiles and tablets devices (it adapts to the screen's size), more features will be added in the future as response to the users feedback, please provide your suggestions or let us know what you would improve([email protected]).