If you’re looking for a way to collaborate on office projects (documents, spreadsheets, lists, and chat), look no further than Quip. This app allows you to work in real time with your collaborators in a handy framework that keeps everything fluid yet structured. Recently updated for Android (4.0.3+), the app was originally designed for iOS (7.0+). Newer versions take care of old bugs that you’ll read about in last year’s reviews.