Unlike other apps, you're not able to choose portion size, but instead have to multiply the number of servings. The app gave me constant problems, and would often disconnect from the feeder and be unable to reconnect to WiFi. The feeder didn't keep it cold enough to spread the meals out and the wet food was not at a safe eating temperature. At this price point, just get the Petlibro Polar wet feeder for a few bucks more. This may be OK for kibble, but wet food was kept at unsafe temperatures, and my cats couldn't reach all of the food.