We used to have problems with our cat over eating, and vomiting, so we bought the prior version. It has worked very well, is reliable, and solved that problem. I like that it plugs in for long term power, but also has battery back up. The voice recording feature has trained our cat to know when the food is coming, and is a nice customization.Recently, when we needed a second unit for our vacation home, I was planning to buy the same one again. But I was happy to notice this model that has smart phone/app integration. I definitely think that the upgrade is worth it. If I had any criticism of the original unit, is that the programming was a bit annoying. In the other model we have, you have to use a small LCD screen and a few buttons to cycle through the controls, like a old timex watch. I like having the set up on phone, and also being able to give extra feedings from my phone. The company did offer 20$ gift card to write a review, but the above is my honest opinion and recommendation