I have five dogs, and this Instachew Puresmart Water Fountain is a game-changer! I love the app, which tells me when the water is running low and also allows me to set a drinking schedule so my dogs do not drink a lot of water right before bed or before I leave.  The water is filtered and fresh and my dogs seem to love it.  It is quiet, also.  Very durable and quality-made.  Highly recommended.