I do still have BIAB ver. 4 (build 5410) on my iPad, and it still shows in the App store for iOS, but it looks like it hasn't been updated in 3 years.

I've never really used it much though, as ironically, it was better integrated with Windows than with the Mac desktop versions.
IIRC I used it mostly for playback, as it didn't have a lot of editing features.

I think the integration issue on Mac had something to do with a PG Windows server background program, that was able to integrate with the iOS version where there was no equivalent on Mac.

Importing songs from the Mac was kind of clunky, where you had to set up an IP server or something, so as I said I never really used it much.
Sorry I couldn't be of more help.

- Jay

MacPro 5,1/12 core@3.46GHz -- OS X 10.15.7 -- ATI 7970 -- 32 Gig RAM -- Crucial 500GB OS SSD -- Samsung EVO 1TB Audio/Sample SSD -- BIAB 2023 -- Logic Pro X -- Cubase Elements 11 -- Too many plugins