This instachew puresmart water fountain is great. I have two cats and two dogs all of which love this fountain. My cat, Pixie is very picky about her water it has to be clean and it has to be moving she loves this fountain. We often were turning on the sink and letting her drink from there, yes she is spoiled but this fountain seems to really help her. It was easy to connect it to the app so that you can get notified of when to add water but it also works without the app. I would love to get a bigger one for my dogs that drink tons of water.