App Inventor: Blocks, Events, Language, and Apps You Can Create

Post actualizado el día September 27, 2026 by DeiviSanzPlay

What is MIT App Inventor and what is it used for?

I recommend you check out this interesting article: Discover the benefits of having the Best Mattress on your Bed.

If you’re looking for App Inventor because you want to create apps without writing code, this will interest you. MIT App Inventor is a super visual platform where you drag blocks to program as if they were Lego pieces. What is App Inventor used for? Well, for making simple (or not so simple) Android apps without having to learn Java or Kotlin.

Sometimes you get tangled up with traditional programming languages, but here everything comes down to fitting logical blocks together. That said, it has its limits: if you want to make the next TikTok, App Inventor 2 won’t cut it. But for educational apps, simple games, or productivity tools, it’s amazing.

What type of apps can you create with App Inventor?

From basic things to apps with GPS, databases, or even artificial intelligence (yes, seriously). Some examples:

• 🎮 <a title="How to record video game gameplay with OBS Studio on your computer in high 4K quality" href="https://www.chusmeando.com/informatica-y-tecnologia/como-grabar-tu-pantalla-de-juego-con-obs-studio-configuracion-paso-a-paso-videos-4k-sin-perder-fps-guia-definitiva/”>Simple games (like a “Pac-Man” or a trivia game).
• 📍 Apps with GPS (for routes or geolocation).
• 📲 <a title="ONLINE OFFICE TOOLS: Excel, Word and Google Docs FREE 2025" href="https://www.chusmeando.com/informatica-y-tecnologia/descubre-las-mejores-herramientas-online-gratis-excel-word-y-google-docs-para-editar-documentos-directamente-desde-tu-navegador/”>Educational tools (multiple-choice exams, calculators).
• 🤖 Apps with AI (voice or image recognition with extensions).

If you’re wondering what is better than App Inventor?, the answer depends: for more complex projects, try Android Studio, but if you want something quick and visual, this wins.

What are blocks in App Inventor and how do they work?

App Inventor blocks are like instructions that you fit together to tell the app what to do. For example:

• “When the button is clicked → play sound” (that’s an event in App Inventor).
• “If the score > 10 → show message ‘You won'” (conditional logic).

You don’t have to write a single line of code, but watch out: if you make a mistake when putting blocks together, the app won’t work.

<a title="Deciphering AI Jargon: What Does All This Technical Language Mean?" href="https://www.chusmeando.com/informatica-y-tecnologia/descifrando-la-jerga-ai-que-significa-todo-este-lenguaje-tecnico/”>What programming language does App Inventor use?

Here comes the trick: App Inventor doesn’t use a traditional language, but rather converts your blocks into Java code (but you don’t see it). If you’re worried about can I migrate my app to Android Studio later?, the answer is yes, but you’ll have to rewrite it in Java/Kotlin.

App Inventor 2 vs other platforms: which one wins?

• ✅ Advantages: Ideal for beginners, fast, and no code.
• ❌ Disadvantages: Limited for very complex apps.
• 🔄 Alternatives: Thunkable (similar), Android Studio (more professional).

Common errors in App Inventor (and how to fix them)

Sometimes you build your app with App Inventor blocks, hit “Build” and… error! Don’t stress, here are the most typical failures:

• “The blocks don’t fit” → Make sure the shapes match (a square block doesn’t go in a round one).
• “The app closes when I open it” → Check the permissions in the AndroidManifest (yes, that exists even if you don’t see it).
• “The option I need doesn’t appear” → Make sure you have the latest version of App Inventor 2.

👉 Tip: If your app runs slow, reduce the number of events in App Inventor that run at the same time.

How to go from App Inventor to Android Studio

Has the bug for “real” programming bitten you? If you want to make the leap to Android Studio, follow these steps:

1. Export your project from App Inventor (“Projects” menu → “Export selected project”).
2. Install Android Studio (you’ll need Java and the Android SDK).
3. Translate the blocks into code (here comes the hard part, you’ll have to learn Java/Kotlin).

⚠️ Note: There’s no automatic way to convert App Inventor blocks into clean code. But if you already master the logic, you just need to learn the syntax.

Extensions and useful tools for App Inventor

If the basics aren’t enough for you, try these App Inventor 2 extensions:

• Firebase DB: To connect your app to a real-time database.
• TensorFlow Lite: Add artificial intelligence (image or text recognition).
• Google Maps: Integrate interactive maps into your projects.

🔗 Useful link: <a href="https://appinventor.mit.edu/extensions/” target=”_blank” rel=”noreferrer noopener”>Complete list of extensions

Ideas for your first app with App Inventor

Can’t think of what to make? Here are 3 easy projects to get started:

1. A talking “Hello World” (using the TextToSpeech component).
2. A “tap the button” game (with a score counter and vibration when you win).
3. An app that sends your location via SMS (combining LocationSensor and Texting).

💡 Tip: Start with something small, finish it even if it’s ugly, and then improve it.

App Inventor communities in Spanish

If you get stuck, ask on these sites:

• MIT’s official forum (it has a Spanish section).
• Facebook groups like “App Inventor España”.
• YouTube (search for tutorials on “App Inventor real projects”).

Conclusion
If you want to start creating apps without driving yourself crazy with code, MIT App Inventor is your best option. That said, if you outgrow it, you can always move on to more advanced tools.

➡️ Need help with your first app? Download App Inventor here and get started today.

(Got questions? Leave them in the comments and I’ll help you out).