App Inventor Open Source Development

The MIT Center for Mobile Learning is pleased to announce the official free and open-source release of the MIT App Inventor source code at

Our hope is to nurture a robust and active open-source community, now that we have deployed MIT’s large-scale public App Inventor service. We will be updating this site with each new release of MIT App Inventor. We have also posted supporting documentation and will continue to add more as it evolves.  

In addition we have created a forum for the App Inventor open-source developer community. The forum will be managed by MIT App Inventor Development Team Member José Flores. José is enthusiastic about helping this community realize its potential to become the source of creativity that will evolve and extend App Inventor and open the power of mobile apps development to learners and aspiring developers of all ages. We look forward to all of your feedback and questions as we move forward in the development of App Inventor.

Enjoy the code, and Happy Inventing!

Andrew McKinney
MIT Appinventor Technical Lead

Showing 1-21 of 882 topics
Announcing App Inventor Extension Components Hal Abelson 6/21/16
receive SMS while running in the background?? Ege Gülbahar 7/22/16
type cannot be resolved Jan Rooth 7/20/16
Client TCP extension made, testers wanted ! Jean-Rodolphe Letertre 7/20/16
Embedding TCP connection into an APP written by APP inventor Marius Latinis 7/20/16
Errors in app inventor file component Ghica 7/18/16
Tutorial crear extension App Inventor (Video) Andres Daniel Cotes Pineda 7/17/16
Adding images to Listpicker Michael Nana 7/17/16
Problem of App Inventor with my Mac OSX 10.11.5 Utkarsh Jain 7/13/16
build Ai2 please 7/9/16
Debugging component in App Inventor Rachael Thompson 7/9/16
Re: Can I reply on tweet with AppInventor? Taifun 7/2/16
How to select a drink from a list ? 6/29/16
[AI extension] supporting mocks and property editors Ethan Hon 6/28/16
Request: more support for complex apps 6/28/16
Public - Who's In? Making AI2 with AI2 Justin Sweat 6/27/16
Interface objects copy and paste Ethan Hon 6/26/16
Including a GoogleMap Box to the Designer Karoui Aous 6/26/16
Build failed at PlayApp Ai2 Explorer 6/25/16
BLE Bluetotth 4.0 Radiation and Robotic s.r.l. 6/22/16
Really stuck, any advise/help is greatly appreciated Keith Kilroy 6/15/16
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