As a general rule of thumb: the camera should be updated to the latest firmware for best functionality of the Camera Controller app.
GoPro Hero 2
Changing of settings and recording are officially supported. Live preview works but is not officially supported.
GoPro Hero 3
Only GoPro Hero 3 White/Silver/Black Editions are supported. GoPro Hero 3+ models are not supported.
GoPro Hero 4, 5, 6, 7, Session
All Hero +, HERO 2018, Hero 4, Session, 5, 5 Session, 6, and 7 cameras are supported. On Hero 4 models live preview works only in idle mode (not during recording).
GoPro Fusion (360° camera)
The GoPro Fusion spherical camera is supported. Live preview is only possible with one lens (side) at the same time and the individual images are not stitched. Please use the GoPro Fusion Studio software for stitching the files from the front and back lens.
Theta S and SC
Live preview works only in photo mode and not during recording (this is a camera restriction).
The Theta V supports Wifi client mode without any modifications.