Used it many times before the roller broke off. I glued the broken piece with gorilla glue and it works fine. It has more than paid for itself. Easy to clean after use.

So overall the app functions as needed to run the vacuum ,Control vacuum back to home base ,change the suction, water flow, etc. No go zone, No mopping zone, boundary lines all seem to work well. My problem has to do with the fact that you can't save any of the maps on there so if for some reason you're not just distorted and you have to redo it you have to re-map your whole entire house and redo all your no go zones because there's nowhere to bring back an old save the map that you had already created. The reason I think this happened was because the vacuum ran out of juice and for some reason when I put it on the charger thought it was charging but maybe it wasn't and it died completely. The other thing is that after that Machines charged up it doesn't always have the option to select a room or a spot clean it's kind of a nuisance. But overall the S 10 pro and the app are well worth the amount that I paid for the vacuum picked up a ton of dust and works well in the carpet and the tile floor and seems to do a fairly decent job working around not getting stuck on the rugs so there you have it.

this thing has mapped my place for a week now and it still says “unavailable” when i try to create room zones. also, i have no idea why the map is oriented the way it is, for me the top of the map faces around SSW and it doesn’t seem to zigzag based on any cardinal direction either, just random. makes it very hard to “navigate” my own home