Wow! MOFOs deleted my review, let's try this again. App + gopro 9 BK worked for a few months. After an update it stopped working with my gopro unless i fiddled with it - I (still) have to use the onscreen menu and tell it to connect to the app and then go back a screen, then it sometimes connects. No app update has ever fixed this. Also, my gopro crashes with SD card errors or the screen will simply freeze. I tried manually updating to the latest firmware using my computer but it still crashes.