This App only works on iOS devices thatsupport Bluetooth 4.0 or higher ;for iOS devices,its need 7.0 or higher version. list of all compatible iOS device follow: - for iPhone: Model 4S, 5,5C,5S,6 or newer , - for iPad: Model Ipad 3,Ipad air or newer device ; Characteristic/Function: - this App have 4 language can be selected: English, French, Germany, Dutch on the right corner of the seek interface; - this App also can self named the light set name depending on your personality and needs on edit interface. -this system have two timer setting function, you can free to set your desired light set operating time. -you can control 1 lighting set or control max. 8 lighting set by checking method to creat control group in one setting. - light control: this App have 9 tradional function, and dimmer function, and self-color changing, and self-color tunable function. if you have any question, please can always contact us or feedback at http//:www.cntzdl.com