MIT App Inventor
App Inventor is the largest app development tool for global education.
- 30M Learners
- 137M Apps Built
- 200 Countries + Regions
- 52% Developing World
See what students build
All you need is a web browser
App Inventor is free and runs right in your browser on a Mac, Windows computer, or Chromebook. There’s nothing to install.
Run your app on your own phone or tablet. Get the free MIT AI2 Companion app for iPhone or Android. Here’s how to connect.
Pick something to build
Step-by-step tutorials at three levels.
Beginner
No experience needed. About an hour each.
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Hello Purr
Tap the kitty and hear him meow. The classic first app.
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Talk to Me
Build an app that says whatever you type.
Opens in App Inventor
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Fake Voices
Bend a synthetic voice’s pitch and speed, then debate the ethics.
Opens in App Inventor
Intermediate
Once you know the blocks editor. Generative AI, maps, and the camera.
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GenAI Digital Doodle
Have AI paint a background, then draw on top of it.
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Emergency App
Share your location, a photo, and a recorded message fast.
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GenAI Vision Aid
Snap a photo and have AI describe it out loud.
Advanced
Machine learning, saved data, and apps that talk to each other.
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PICaboo
Train an image classifier on your face for a peekaboo game.
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ToDo List App
Add and remove tasks, bullet-journal style.
Opens in App Inventor
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CloudDB Chat App
Chat with friends on other phones through the cloud.
Rather watch than read? Video tutorials on our YouTube channel →
News & Events
Registration for the Global Appathon 2027 is open!
The Global Appathon is a free, virtual hackathon hosted by appinventor.org and MIT App Inventor that encourages people around the world to build mobile apps for a cause. The goal of the competition is to develop an app using MIT...
Ten Years of iOS
In this blog post I celebrate 10 years of working on MIT App Inventor for iOS, capturing the history of this effort and how it has changed the face of the App Inventor project. Ten years ago, during a quiet long weekend in 2016, I sat at my computer and asked myself a question that every engineer loves (and occasionally regrets): "How hard could it be to create a brand new runtime for my product?" Many people had been asking about iOS support for App Inventor, and it made sense to dive in and find out the answer to that question. At the time, the goal was modest: I wanted to see if we could get a project like Hello Purr to run on an iPhone. But as I quickly discovered, the gap between a "simple idea" and a working implementation was a great technical puzzle that ended up having a lot of moving parts.
First MIT Apps for Action summer program announced for 2027
MIT App Inventor is pleased to announce the first MIT Apps for Action summer program for Boston Education Consulting. This two-week, in-person program will take place in summer 2027. Designed for students in grades 9–11, the program combines artificial intelligence, mobile application development, and design thinking. Guided by MIT instructional staff and teaching assistants, participants will use MIT App Inventor to design, build, and present applications addressing real-world challenges in their communities. For program details and application information, visit bostonedu.net.
Blocks, AI, and Access: App Inventor at the 2026 Blockly Summit
Can blocks serve as powerful abstractions in the era of AI-assisted coding? How can we increase the accessibility of programming for people with disabilities or who may have limited connectivity?