We've been working toward this for a while — and it's here: Neoharp is now in the App Store! Plug in a USB-C cable, connect Neoharp to your iPhone, and play. Right from your phone, no computer, no DAW.
Works on iPhone, iPad, and Mac with Apple Silicon.

How it works
Plug in the cable, open the app — a green icon in the upper left corner tells you the instrument is connected. Press a chord button with your left hand, run your right across the tone keys — every note lands in harmony. That's it.
On Mac, same idea: run the app, connect Neoharp and improvise without launching Ableton or Logic. One cable is all it takes.
You can set up the sound from the app — choose instruments for each channel, turn inversions, shift the voicing, etc. But you don't need any of that to get started.
Download
If you have a Neoharp and an iPhone — try it now. Free. No subscriptions.