We travel a lot for work and pleasure. With this puresmart water fountain I no longer need to find someone to ensure Ms. Kitty has clean water while we are away for the weekend. 
The app is rather simple to use and get started. I have mine set where Ms. Kitty gets clean cold water twice a day. 
The only real bummer I found with this product is... It is not intended for large breed dogs. I have a 110 lb American Bully that would absolutely destroy this. Just trying to drink from it. Trust me... He's tried a few times. 
Cats and small dogs are strongly recommended for this water fountain.