I had one. It has multiple issues:

1. CADR is really low to the point where the unit is near useless due to #2

2. In addition to a low CADR, it has the highest noise. It looks and sounds like a jet engine when you have this thing on high, which is needed due to the low CADR. This is the loudest air purifier that I’ve ever owned

3. If you get a defective main filter, the unit will emit an unpleasant metallic smell. I haven’t tested the particles yet but I doubt the air is clean.

4. Unlike other smart air cleaners in the same price range, it’s app and smart features don’t work. You can’t even create a schedule for it

It’s a very flawed device