Catsup is a reusable grocery list. - The idea is that you shouldn’t have to type “eggs” into your grocery list every week. Just keep eggs on the list. - Want to buy eggs? Slide the knob next to eggs. Bought eggs? Slide it back. - I’ve written “eggs” so many times it no longer looks like a word. - Of course, you can rename and reorder items. This is software. - You’ll probably want to share the list with other people, so there’s iCloud sharing. - The app supports multiple lists. By multiple I mean 3. - I hope you like my handwriting.