Is it possible to share models with a backend module with room? I have a common module with all my models and I want to use those models to save data to sqlite in my app module

It shouldn't be impossible. You'll just have to figure out how to handle annotations I think.

Yes. Annotations are why it is impossible. That and the fact that data classes are strictly final

You could typealias the annotations on the other platforms.

yeah it could work actually. There is also an artifact "room-common" with all the annotations and almost nothing else. I haven't been able to test it completely yet but things look good. Thank you :)