Is Apple Homekit installed first before installing Eufy on HomeBase 2?

Reason I ask is I installed Eufy to HomeBase2 & 2 (2C Pro) cameras first, then tried to install HomeKit & installation failed repeatably. Reset to factory settings & this time installed Homekit first, added cameras via Homekit & it worked. But now can I still install for the Eufy app? There are features on that app I may need/want to apply.