An app, short for application, is any software that runs on top of an operating system or platform. We use the Android platform on our Motorola smartphones and tablets. Android is open source, so any developer can access the software to create apps, and then make the apps available for download through an app store such as Android Market. More than just fun and games, staying up-to-date while on-the-go has never been easier. Track your mileage. Remember what groceries you need. Check the weekend forecast. With apps, you can.