Category Topics

MIT App Inventor Help

This is a place for MIT App Inventor Programmers to ask questions or report problems using MIT App Inventor.

General Discussion

This category is for general discussion of app development, not necessarily related to a specific part of App Inventor. It may include topics of interest to the larger app development community for discussion in the context of MIT App Inventor.

Frequently Asked Questions

Have a question? Look here first for the best answers. Tired of retyping answers to common questions? File them in this Category by Subject.

Bugs and Other Issues

Report potential issues with App Inventor in this category.

Open Source Development

This category is used for sharing development progress for those building on the MIT App Inventor open source repository at Anyone interested in extending core App Inventor or writing extensions should join this group and share their experiences.


Propose new extensions, get help with extensions, or share your extensions here. If you are a developer writing an extension, please see the #open-source-development:extension-development category instead.

Tutorials and Guides

Post useful tutorials and helpful guides to this category. Please tag the posts to help other community members find tutorials and guides of interest.

App Inventor for iOS

Learn more about development of MIT App Inventor for iOS. Beta testing participants should discuss iOS specific functionality here. If you are interested in signing up to be a beta tester, please use this form.

App Showcase

Showcase your finished apps and get feedback from other app inventors.


MIT uses this category to announce new App Inventor features and releases.

Work for Hire

Freelancers and people looking for someone to help build apps should use this category to get connected.

Data Storage

Discuss ways of storing and processing data in apps as well as making cross platform applications using components like CloudDB.

Artificial Intelligence

App Inventor provides opportunities to incorporate artificial intelligence into mobile apps using frameworks like Google’s TensorFlow.js. Share extensions, tutorials, and projects that showcase the power of mobile-enabled AI.

Translating App Inventor

App Inventor relies on the community to provide translations in a wide variety of languages. If your language is missing or incomplete, please consider signing up to be a translator!

MIT App Inventor Alexa

This category is intended for posts related to supporting the MIT App Inventor for Alexa platform at When asking questions, please attach your project and include any prompts you used in the testing window to evaluate your skill.


Informational posts about MIT App Inventor and the community, such as best practices, posting guidelines, and other information are placed here.

User Interface and Graphics

This category is for asking questions or offering help on good user interface design for App Inventor apps. Share your tips and tricks with other users to provide the best user experience and visuals with the community.

Site Feedback

Discussion about this site, its organization, how it works, and how we can improve it.


Use this category to discuss topics related to the MIT App Inventor Appathon. MIT will also use this category to make occasional announcements. The Appathon 2021 coding period starts on July 19 and ends July 31.