Doesn't persist settings.
I've tried to install both versions (github+regual v4l2 and aur+v4l2-dc). None of them remember my exposure if I am connected with USB. EL button is shown as active but it doesn't work after restart until I turn it off and on again. Manual exposure correction settings in iOS app itself doesn't persist either, same goes for WB setting. That is real pain to set everything up every time i need to use this app.
Same happens when using obs plugin (except it remembers WB setting), but it also seems like it doesn't work in full range when using hardware acceleration, image have much less dynamic range. Also it doesn't show how to control camera settings from PC thru USB, on your main webpage I only found guide for wifi connection.
Auto-focus doesn't seem to work in obs plugin.
iPhone 7 front camera.