People who set out to publish a book often need to consider how much paper is needed to make it. Paperman is an app for calculating the exact amount of paper. Users simply have to enter data on various parameters such as the number of pages and copies, the type of cover and binding, as well as the kind of paper. Developed for iPhone and Apple Watch, the app calculates the book’s size and thickness as well as the amount of paper needed. This information can then help with the assessment of quotations.