So far so good. Its a little startling when it starts a clean cycle because it does make a noise, but its not super loud. The cats have all used it and took to it fairly quickly. The drawer is easy to empty. Its a little bigger than I thought it would be, but nothing crazy. App is easy to use. 

I would suggest setting the clean cycle for 10-15 mins after the cat uses it to give the litter time to form clumps.