MIT App Inventor: free app building with blocks in your browser
Scoped recheck: 24 October 2026. We reread the official home page and terms. Free, browser-based, the Google account requirement, the Android wording, the beginner and AI tutorial names (Hello Purr, Talk to Me, GenAI Digital Doodle, GenAI Vision Aid, PICaboo), the free companion app, and the privacy terms (modified 1 July 2020) still match. The one change is the 200-countries line, which we could not find. We still did not log in or build anything. Original publication date unchanged.
MIT App Inventor says it is free and runs in your browser, with nothing to install. You build apps from blocks and test them on your phone. A Google account is needed.
Official publisher artwork hosted by its publisher. Official source. Independent guide, not affiliated or sponsored. Artwork and trademarks belong to their owners.
What it is
MIT App Inventor is a tool for building Android apps by snapping together blocks, run by MIT. Its home page says "App Inventor is free and runs right in your browser on a Mac, Windows computer, or Chromebook. There's nothing to install." You can test your app on your own phone with a free companion app. It is aimed at learners, but it also has tutorials that use AI, such as an image classifier and an app that describes a photo aloud. We included it as a free way to learn by making something real.
Is it free?
Yes, per the home page: "App Inventor is free", and the MIT AI2 Companion app for iPhone or Android is described as free. We saw no price or plan. We did not check whether the AI tutorials use any outside service with limits or costs.
What you can do with it
- Start easy. The home page lists beginner projects of about an hour each, such as "Hello Purr" and "Talk to Me".
- Try AI. Intermediate and advanced tutorials include "GenAI Digital Doodle", "GenAI Vision Aid" and "PICaboo", where you train an image classifier.
- Test on a phone. Connect your own phone or tablet with the free MIT AI2 Companion app, per the home page.
- Step-by-step guides. The home page says each tutorial opens a working project with instructions beside it.
What to watch out for
- Google account needed. The terms say you need a Google account to log in to MIT App Inventor.
- Android apps. The terms say it lets you develop applications for Android devices. The home page says you can test on iPhone through the companion app, but we did not check what that allows.
- Adjacent learning tools. If you want a simpler start for young learners, Scratch is a different, block-based option we covered earlier.
- Not tested. We did not log in or build anything.
Privacy and data
- The terms and privacy policy (modified 1 July 2020) say MIT only has access to your Google account name and email address.
- They say MIT tracks which pages are visited, and also information about user projects and how they are developed when connected to Android devices.
- They say MIT may log your IP address, operating system and browser, and use cookies and web analysis tools.
- They say information may be used to debug and improve the system and for scientific research on how people learn and create, and that published findings are non-personally identifiable.
- The terms say the site runs on Google's App Engine service.
India
- The home page said on 17 October that it is used in 200 countries and regions; on 24 October we did not find that line in the page text we could read, so treat it as not currently confirmed. The home page mentions no country limits. We did not test it from India.
Frequently asked questions
Is App Inventor free?
Yes, per its home page.
Do I need to install anything?
The home page says no. It runs in your browser.
Do I need an account?
Yes, a Google account, per the terms.
Sources: MIT App Inventor home page, Privacy Policy and Terms of Use. Checked 17 October 2026.
Independent guide, not affiliated.