Continuing its revival of Google's App Inventor tool, MIT has placed the software into public beta. This follows the open sourcing back in January, and comes as part of a three-month project to get the Android app creation tool into people's hands. The beta is open for anyone with a Google account. MIT says it's suitable for "any use, including running classes," but as with any beta warns of potential stability issues — you should probably make sure you have backups of all your important app projects. If all goes well, App Inventor should become a full MIT service soon enough, with the institute pledging to produce resources and support to help budding developers get their Android apps out of the door.