Seems like it has potential, but it doesn’t quite work
The motion tracking tech seems rock solid on both devices, and if I’m filming someone else, that’s great, but the point of these apps is to make fun clips of yourself, and if the front-facing cam icon (which, according to the help file, is supposed to be in the upper right corner of the screen) can’t be found, it can’t work.
I tried going to the developer website linked in the App store and the request timed out, so my only option for proving feedback seems to be here.
Developer, if you can update this so the front-facing camera works, I’ll gladly come back and update my review!

