Instachew Puresmart Water Fountain is a very convenient way to supply water to my dog. I love that is has a UV light and filter to keep the water fresh. I used to have to fill up my dog's water bowl multiple times a day but now I don't have to. I thought that the app was a little confusing to use. The manual is very basic and only touches on how to set up the device, not how to use the app. It took me several tries to figure out how to set up the water fountain so it would dispense water to my dog. Overall, it's a good product but the app could use some work.