Control your home theater devices from the iPhone or Android mobile phone you already own. Anyone in the house can download the Harmony iPhone or Android app turns their mobile phone into a personal universal remote control, including 50 favorite channel icons and gesture control.Consolidate 8 remote controls into one simple mobile app. Harmony is compatible with over 225,000 home theater devices. And unique to Harmony is Logitech's patented Smart State technology, which remembers your devices' power and input settings and automatically adjusts them based on what you want to do.