Question about Electrolux PA91-404GY

I don't know. I have the app from Electrolux and am completely satisfied. Can see from Africa if someone has left the windows open (temperature display). Or whether the room has been flooded (humidity display). Or you can see whether it's time to ventilate (visible according to the TVOC display). I wouldn't risk using any other app. There is no reason.

Or the AEG Wellbeing?