You should have it
In use, it is set-and-forget. We have programmed it to come on about an hour before bed time and to turn off the following morning at latest-go-out time. It is completely silent in use once it has got the air clean - the fan speed drops. The green air quality light also goes out in the dark so your sleep is not compromised - a nice touch. The app has lots of data about air quality including several things the unit doesn't actually affect (like VOC concentrations). It's all detected via a sensor on one side of the unit so take care to keep that free of all obstructions. It also has a setting where it will emit ions in the air flow (which causes dust to get quickly settled and collected) which we hadn't noticed from the text and really like.
Overall I am now very happy with it, having run the setup gauntlet. It is MUCH better than the old Levolt unit. On balance, I would probably recommend it.