As part of the closing of Google Labs, the Android App Inventor visual programming engine for the Android platform will be shut down and the code transferred to MIT labs for maintenance and future use (see this and this articles).
From what the articles said, the programming environment was primary used in learning environments, and from my point of view, since they are closing it and giving the code for free, it was probably not much of a success. Another try at visual programming gone away.
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