Here is where the real innovation of MIT App Inventor shines through because it makes programming the application very visual. Each function is represented by a colorful jigsaw puzzle-like block.

The entire setup is controlled using a smartphone application developed in MIT App Inventor, a super-easy way to prototype Android applications.

Google App Inventor, the simplified Android app creation tool that went dark last year, is getting a new lease on life as an open-source project at MIT. The App Inventor source code was released ...