Great work but wouldn't the iPhone with the lidar depth sensor be a better device?

It’s on the plan to expand this app for iPhone. But, I haven’t tried lidar, so I decided to release for macOS first.

Also with iPhone, I have to think how to transmit MIDI data to DAW on laptop. Well, most likely via USB or network.

Apple devices can do MIDI over Bluetooth. I've used this in the past to send VisionPro hand tracking data as MIDI.

I do this with "Apple Lightning to USB Camera Adapter". iPad basically talks to the midi sequencer via USB.