Is it possible to do this on iOS?
" To do this, I connected my Zoom H6 portable recorder to my Mac in USB interface mode—one of the handy features of this device is that it can transform itself into a six-track USB audio interface on demand—and attached four table microphones for my in-person participants. I connected a multi-way headphone splitter to the output from my Mac, and each of us brought our own set of headphones. Everything got routed by Audio Hijack: each individual track from the H6 was saved to its own file on my Desktop, and then routed to Skype via Loopback to everyone else on the call could hear us mixed together. I recorded the Skype audio to my Desktop and routed that out to the headphone splitter. Shockingly, the entire thing worked flawlessly, despite it being operated by increasingly tipsy people. Back in the day at Macworld I was frustrated by how hard it was to set up a multi-microphone recording session in our podcast studio. Getting a civilian to understand how to properly configure GarageBand or Logic for a foolproof multi-microphone recording session? Forget it. But with Audio Hijack, I was able to make it simple, by creating a Session that recorded the output of all four microphones in the studio to individual files, a format I replicated for the beer episode. Combined with tools like Loopback and Nicecast, there is not a single audio problem on my Mac I have not been able to solve with Audio Hijack. Its flexibility and clever interface continue to amaze me."