"Quip Spreadsheets is not a separate app or file type, but is instead seamlessly integrated into the Quip product experience. You don't have to choose between text, images, task lists, or spreadsheets — you can combine everything on a single page: Within your documents, you can embed full-featured spreadsheets — as many as you want, with support for formulas, over 400 functions, and all the data formatting options you'd expect." - × × ×