MIT App Inventor
Original author(s)Hal Abelson, Mark Friedman
Developer(s)Google, MIT Media Lab, MIT Computer Science and Artificial Intelligence Laboratory
Initial releaseDecember 15, 2010; 13 years ago (2010-12-15)
Stable release
nb194c / September 14, 2023; 4 months ago (2023-09-14)
Written inJava, Swift, Objective-C, Kawa, Scheme, JavaScript, HTML
Operating systemAndroid, iOS
Available in19 languages
List of languages
English, Spanish, French, Italian, Korean, Dutch, Portuguese, Brazilian Portuguese, Russian, Swedish, Simplified Chinese, Traditional Chinese, Polish
TypeApplication software development IDE
LicenseCreative Commons Attribution ShareAlike 3.0 Unported, Apache 2.0

MIT App Inventor (App Inventor or MIT AI2) is a high-level block-based visual programming language, originally built by Google and now maintained by the Massachusetts Institute of Technology. It allows newcomers to create computer applications for two operating systems: Android and iOS, which, as of 25 September 2023, is in beta testing. It is free and open-source released under dual licensing: a Creative Commons Attribution ShareAlike 3.0 Unported license and an Apache License 2.0 for the source code. Its target is primarily children and students studying computer programming, similar to Scratch.

The web interface consists of a graphical user interface (GUI) very similar to Scratch and StarLogo, allowing users to drag-and-drop visual objects to create an application that can be tested on Android and iOS devices and compiled to run as an Android app. It uses a companion mobile app named MIT AI2 Companion providing live testing and debugging.

App Inventor provides integration with different online services, such as Google Sheets and Firebase.

When creating App Inventor, Google drew upon significant prior research in educational computing, and work done within Google on online development environments.[1]


The application was made available through request on July 12, 2010, and released publicly on December 15, 2010. The App Inventor team was led by Hal Abelson[1] and Mark Friedman.[2] In the second half of 2011, Google released the source code, terminated its server, and provided funding to create The MIT Center for Mobile Learning, led by App Inventor creator Hal Abelson and fellow MIT professors Eric Klopfer and Mitchel Resnick.[3] The MIT version was launched in March 2012.[4]

On December 6, 2013 (the start of the Hour of Code),[4] MIT released App Inventor 2, renaming the original version "App Inventor Classic"[5] Major differences are:

App Inventor Classic Blocks Editor

Open Blocks is distributed by MIT's Scheller Teacher Education Program (STEP) and is derived from master's thesis research by Ricarose Roque. Professor Eric Klopfer and Daniel Wendel of the Scheller Program supported the distribution of Open Blocks under an MIT License.[6] Open Blocks visual programming is closely related to StarLogo TNG, a project of STEP, and Scratch, a project of the MIT Media Lab's Lifelong Kindergarten Group led by Mitchel Resnick. App Inventor 2[5] replaced Open Blocks with Blockly, a blocks editor that runs within a web browser.

The MIT AI2 Companion app[7] enables real-time debugging on connected devices via Wi-Fi, or Universal Serial Bus (USB). In addition to this the user may use an "on computer" emulator available for Windows, MacOS, and Linux.


In June 2018, a baked version of App Inventor 2 called Kodular was launched.[8] It is promoted as an 'improved' and more modern version of App Inventor 2.[9]

See also


  1. ^ a b Hardesty, Larry (August 19, 2010). "The MIT roots of Google's new software". MIT News Office.
  2. ^ Wolber, David; Abelson, Hal; Spertus, Ellen; Looney, Liz (May 2011), App Inventor for Android: Create Your Own Android Apps, O'Reilly, ISBN 978-1-4493-9748-7
  3. ^ "App Inventor @ MIT".
  4. ^ a b Clark, Andrew (December 30, 2013), "App Inventor launches second iteration", MIT News, retrieved 7 July 2019
  5. ^ a b App Inventor Classic, December 3, 2013
  6. ^ "On the Shoulders of Giants!". Archived from the original on August 11, 2010. Retrieved August 10, 2010.
  7. ^ "MIT AI2 Companion". May 25, 2019. Retrieved 8 July 2019.
  8. ^ "Kodular". Kodular. Retrieved 2022-06-22.
  9. ^ Barreiro, Diego (2018-12-31). "Thank you 2018!". The Kodular Korner. Retrieved 2022-06-22.