Android native mobile app development involves using the Android SDK (Software Development Kit) and Java or Kotlin programming languages to create applications specifically for the Android operating system.

iOS native mobile app development involves using Apple's development tools, primarily Xcode and the Swift or Objective-C programming languages, to create applications specifically for iOS devices such as iPhones and iPads.

Flutter mobile app development entails using the Flutter framework, developed by Google, to create cross-platform mobile applications for both Android and iOS platforms from a single codebase.

Ionic hybrid mobile application development involves using the Ionic framework, which is built on top of Angular, to create cross-platform mobile applications for multiple platforms such as iOS, Android, and the web.

Progressive Web App (PWA) development involves creating web applications that provide a user experience similar to native mobile apps. PWAs use modern web technologies such as HTML, CSS, and JavaScript to deliver features like offline access, push notifications, and home screen installation.