If you work in a group, you can merge the projects together. So that you can have a better division of labour.
Developed by Kate Feeney of Mills College, the AI Merger Tool lets multiple users develop screens for an app in different projects and later merge the screens to produce a single project. This is useful for classroom projects, and to anyone developing an app with a partner.
Encouraging Collaboration through App Inventor, thesis by Kate Feeney
ABSTRACT: App Inventor is a free, open source application that permits people with any level of programming background to create software applications for the Android operating system. At the time of its open source release, it lacked important resources for supporting collaboration: documentation for source code contributors and technological support for users developing apps in a group environment. To address these issues, I added a property to an existing component and then created detailed documentation about the process for future developers. I also created a tool for merging multiple projects, which will encourage teamwork by allowing multiple users to code separately and then combine their work. These contributions will increase collaboration among users as well as developers of App Inventor.
Download the AI2 Project Merger
This is a zip file that contains the AI2MergerApp.jar file and a ReadMeFirst.txt file