This document provides a cheat sheet of productivity apps for iOS and Android devices. It lists over 50 apps organized by category including storage apps, office software, printing apps, note taking apps, image/PDF annotation apps, voice recording apps, organizing thoughts apps, time management apps, mail/contact management apps, social network management apps, collaboration apps, presentation apps, mirroring apps, utilities, and useful review sites for finding new apps. The apps cover a wide range of functions for work and productivity on mobile devices.