Any idea why any app that works on Lineage would not also work on Graphene, provided you are okay enabling the exploit compatibility toggles where necessary?

Play store says the app is not compatible with the device.

Thanks for the answer!

Interesting that this stops people. It could be correct of course, I just can't think of anything that would cause it to work on Lineage but not Graphene. They're very fast about upgrading to the latest version, that can't be it, so then... on identical hardware... what could possibly be incompatible all of a sudden? I'd just ignore the warning and try it out!