We got this feeder to keep our cat fed while we are away on travel. Having an app gives us peace of mind that the cat has been fed and the dual power system removes any concern that a power outage will lead to a hungry kitty. The unit was easy to set up by following the included instruction booklet. You enter in your wifi network and password, connect to the feeder's temporary wifi network, and everything starts working. The app is very easy to use and is great about warning you if there are any problems with the feeder (low/out of food, batteries low). Our cat comes running as soon as she hears the little door open. We thought she might be afraid, but the reward of food quickly got her comfortable with the feeder. Overall, I highly recommend this product.I had a couple questions with the feeder, so I reached out to PETKIT support via email. They responded very quickly--even on a Saturday--and were unbelievably helpful.