I installed this on my iPad and I couldn’t get it to work.
The developer was responsive to my issues, despite an initial automated email saying they were unavailable.
According to the developer, Apogee Jam ONLY works with headphones, and not the Apple headphones - they have a mic. Only headphones without a mic. And both the Jam and the headphones must be plugged in before you launch the app.
After plugging in appropriate headphones and killing the app, then relaunching, at first I could only get it to work if I ran GarageBand or AmpliTube first. After a reboot it seems I can launch PocketGK first and have success.
I haven’t tried all of the features yet, but so far I’m not impressed with the sound. I wish I had spent the money on amp models for AmpliTube instead of this app.
tiredOfRebooting about PocketGK - Bass Guitar Amp