It's very handy!
Its very good when we're out past teatime and our cat can help himself! He's now used to the sound of the compartments whirring round at the set time and goes running in! Just that the food on the outer edges of the compartments can tend to get under the lip of the top cover and can get lodged under there so more effort needed by cat to get it out - but he's managed so far. Glad we bought it and think worth the money. Not sure if we get a warning when the battery is low though, must check info.