Hi @kmaaj
Thanks for your message.
Apple added Audio Unit support for mobile apps several years ago, which clearly can be seen as the successor to Inter-App Audio.
I suggest to get in touch with the 3rd party app vendors, to let them know that you would like to see AU versions of their plug-ins (to make them aware about the demand).
To learn more about the limitations of Inter-App Audio, please take a look a the following Cubasis article (from Oct 2016): Limitations of Inter-App Audio
If you encounter issues, you may give the following steps a try:
- Launch the Stand Alone app versions of the IAA plug-ins first, before using them in Cubasis
- If you encounter IAA loading or other issues: close all apps, including Cubasis, followed by shutting down your iOS/iPadOS device (turn it off) and try again.
Hope that helps!
Best,
Lars