Also, I believe developers on the Play Store can set flags for device compatibility anyway, no? Or is that limited to specs and OS version? It makes sense tha

Also, I believe developers on the Play Store can set flags for device compatibility anyway, no? Or is that limited to specs and OS version? It makes sense that if an application is known to not work properly on a given device, it might throw the "not compatible with your device" message on the app listing. The fact that they still offer it as a direct download shows that they aren't solely trying to stop people from using it, but rather they know of the issues and don't want to claim full compatibility.