Hello,
Would like to share my custom integration I made for integrating a Molekule device into HomeAssistant.
Currently this just supports / have tested with the “Molekule Air Pro”, but I think it should be easy to extend for additional models that are supported by the iPhone app.
It does rely on the cloud.
Would love some feedback, and hope others find it useful! It was inspired by the homebridge plugin. Now I finally can shut down my homebridge instance 
It is my first custom integration, so there could be bugs, but it seems to work for me.