Mobile application development involves creating software applications that run on mobile devices. It includes developing installable software bundles, implementing backend services using APIs, and testing apps on target devices. Some common tools for mobile app development include Android Studio, Xcode, VS Code, and AppCode. The process generally consists of strategizing, researching, designing, coding, testing, and deploying an app. Popular programming languages for native mobile app development include Java, Kotlin, Swift, and Objective-C, while cross-platform options include React Native and Flutter.