It can sometimes be hard to use the Zooniverse's browser-based classification tools when using a web browser on a phone. To improve volunteer's experience when contributing on smartphones, we've developed a Zooniverse app that is available via iTunes and Google Play for iOS and Android. https://blog.zooniverse.org/2019/05/08/notes-on-the-zooniverse-mobile-app-new-functionality-release outlines the project ‘task types’ available through the app (e.g., simple Yes/No type questions, multiple choice questions, and rectangle drawing tasks). Over time we’ll build more functionalities into the app and make more projects available.