Hands on App inventor Senior(Age: 12+)
MIT App Inventor is a free tool that can be used to create Android Apps. It works right inside your web browser and you can create Apps very quickly because it is a blocks-based programming tool that does not require knowing any programming language.
Your app appears on the phone step-by-step as you add pieces to it, so you can test your work as you build. When you’re done, you can package your app and produce a stand-alone application to install. If you don’t have an Android phone, you can build your apps using the Android emulator, software that runs on your computer and behaves just like the phone. The App Inventor development environment is supported for Mac OS X, GNU/Linux, and Windows operating systems, and several popular Android phone models. Applications created with App Inventor can be installed on any Android phone.
The interface is extremely simple and graphical and without knowing any programming- you can create an app in less than an hour! Sounds exciting? Go ahead and give it a try!
Understand Android Development