...Google Appinventor is a graphical blocks based development environment for Android devices. Google ended the their support of the project and released the code to MIT for educations support. MIT periodically releases JAR files in a pseudo open project.
This self contained project used unmodified MIT jars. The project allows a users to develop, save and build a running application that can be downloaded to the phone, shared with others and potentially modified to place in the Google Market / Play service.
This project requires the users to download and install free tools. ...