I have an Airthings Wave Plus [1] which measures CO₂, Radon, VOCs, and some others but until recently I could only get the data out via the cloud integration.
Home Assistant recently added a BLE integration [2] with the device and it works great, way better than the Airthings app actually. So now I'm automatically logging and tracking all the data on a regular basis instead of hoping the app is still running in the background on my phone and updating the cloud.
I am not sure about initial setup since I had to go with the cloud integration to get it working in the first place a year or so ago, but maybe now you could skip that and just start reading the data off the BLE? It's possible but I cannot say for sure.
Since that page doesn't seem to be loading, here is a gist with the relevant bookmarklet. You click it once to turn on Fount, click a piece of text on the page, and it will show you in the top right the font-family, font-size, etc. (as it actually rendered on your machine vs. what the CSS says it should do):
Home Assistant recently added a BLE integration [2] with the device and it works great, way better than the Airthings app actually. So now I'm automatically logging and tracking all the data on a regular basis instead of hoping the app is still running in the background on my phone and updating the cloud.
I am not sure about initial setup since I had to go with the cloud integration to get it working in the first place a year or so ago, but maybe now you could skip that and just start reading the data off the BLE? It's possible but I cannot say for sure.
1. https://www.airthings.com/wave-plus
2. https://www.home-assistant.io/integrations/airthings_ble/