That was going to be my next question. What controller are people using?
I’ve used the djay 3 iPad app for a prolonged period of time without it crashing when not connected to a controller. The crashes are occurring when connected to my WeGO4, which is how I always use it. djay 2 and djay 3 have worked fine with my iPad Air 2 and WeGO4 through iOS/iPadOS 12 and 13, but not since going to 14.2.
I’ve been looking for an alternative for now and tested this setup with the Pioneer WeDJ iPhone app, so iPad Air 2 on iPadOS 14.2, Pioneer WeGO4 and WeDJ. This app is free and supports SoundCloud, unlike the iPad version. Whilst this app was last updated a year ago, so far this setup is running stable, whereas djay 3 crashes within minutes.