Perlego users love having access to over 1 million textbooks. But at the beginning of 2021, iOS and Android users missed out on half of the catalogue and essential reading features. As the design lead for the mobile app, I designed over 20 screens and features that define the Perlego app experience of today — from saving books for later, accessing class workspaces, and reading offline on the go. Users can access their learning resources whenever they need them.