Can I use iRig and Amplitube?

Yes, here are the steps for using Amplitube app with Songsterr:

  • Launch Amplitube and enable it's "Background Audio" option
  • Launch Songsterr
  • Switch to Amplitube - you should now hear background audio and guitar
  • Setup filters in Amplitube
  • Switch back to Songsterr
  • Play guitar. You should see red stripe in the toolbar indicating that another app is working in the background