fi light is a free utility and tools app developed by Fonewe for Android devices. This app allows you to adjust and control the RGB and CCT of your lights through your mobile phone. You can also change the RGB color with the rhythm of the music on your phone or microphone.

The app also features a timing switch for your lights, which can be set up through the app. You can group and rename devices, making it easier to control multiple lights at once. Overall, fi light is a convenient and easy-to-use app for controlling your lights with your mobile device.