Glad to deliver some great data-driven news. Apparatus can now be considered functionally complete as the new cache-local, GC-less traits subsystem is done and ready for production use, covered by automated tests.
The solution is fully and natively integrated within current Unreal infrastructure supporting both C++ and BP workflows. You can now use UE for rendering mainly and implement all of your game logic via ECS blueprints and/or C++ code.
For a limited amount of time the framework is now available at a whopping discount price: Apparatus in Code Plugins - UE Marketplace