July 2025: Actually, you can record audio off your iPhone. I did it with two new apps: dubnote, a recording app which I got for free for a limited time (but you may have to pay now): and I recorded the audio from Free Vibe, a vibrophone app that plays a simple vibe sound with a virtual vibraphone instrument. Start the dubnote recording, switch over to the instrument app, play it, then switch back to dubnote, stop recording and it's done. I imported the sample into my DAW (Ableton Live) and processed it. It was really easy. I have several iPhone instruments that I want to record, especially the Chinese Guzheng.