August 2015 Update
MIT App Inventor Classic is no longer available for building apps. You can continue to access old App Inventor Classic projects at the App Inventor Classic Web site. You can download them and you can use the converter as described above, but you cannot modify them or create new App Inventor Classic projects.
App Inventor Classic will shut down on July 15, 2015.
June 18, 2015 - The converter tool to transform MIT App Inventor Classic projects to MIT App Inventor 2 projects has just been released. It is carefully, and specifically designed to convert projects from the latest version of MIT App Inventor Classic to projects readable by MIT App Inventor 2 while maintaining the functionality, but necessarily not the same form of the projects. Make note, project files developed on other App Inventor systems may well not work with the converter tool and will not be supported by the MIT App Inventor team.May 24, 2015 -- MIT App Inventor Classic will shut down on July 15, 2015. After July 15, 2015, you will not be able to access or edit your existing AI Classic projects. It will be impossible to create new AI Classic projects. This shutdown applies only to AI Classic (AI1). App Inventor 2 (AI2) will not be affected. The process of converting an AI1 project to an AI2 project has several steps. For each AI1 project you wish to convert to AI2, you will need to do the following (you can do the first two steps now):
- Open your AI1 project in the most recent version of App Inventor Classic.
- Download the AI1 project as an AI1 source file (.zip) to your computer.
- Use the AI1 to AI2 conversion tool to convert the AI1 source file (.zip) to an AI2 source file (.aia).
- Upload the converted AI2 source file (.aia) from your computer into App Inventor 2 as an AI2 project.