This is unbelievable. I cannot believe I found this forum. I have had an app for - I don't know - 7 years..? 'TWiT'. It plays all programs that have been recorded on the TWiT network. It has them archived and you can either listen to audio, or watch videos of the shows. Well, it hasn't been in the App Store for quite some time now. When I switched from a 6s to a 7, I used iMazing to move the TWiT.ipa app from the 6s to the 7 using the iMazing GUI. It worked. But now - I just got an iPhone 12 and iMazing doesn't work. None of those solutions were working and I was getting very frustrated, because I really like listening to those shows. The TWiT app that's now available on the App Store is nowhere near as good. It only allows for watching the shows in real time. So I saw the suggestion above thinking there's no way this is going to work. With all the shenanigans I've gone through to try to get this old app on this swanky new 12 - well... I just couldn't believe it was going to work. But dang sure enough... I slid the left side of my iTunes window to the right so I could see the TWiT 1180.ipa in Windows explorer (I use a Lenovo for my main iTunes), grabbed the app - and dragged it right onto the left panel of iTunes, under my phone's name under 'Devices', like right on to where 'Music' and 'Movies', 'TV', etc. are listed - and BOOM! I saw it being copied over up in the status bar! Couldn't believe it. Checked my phone's desktop and sure enough - there it was! I have to thank profusely alexfromhome and powerman. Genius...