App development (short for application development) is the process of creating software applications that run on devices like mobile phones, tablets, computers, or even smart TVs. It involves designing, building, testing, and maintaining apps to meet the needs of users or businesses. There are different types of app development: Mobile App Development Apps for smartphones and tablets. Platforms: Android (Java, Kotlin), iOS (Swift, Objective-C), or cross-platform tools (Flutter, React Native). Web App Development Applications that run in a web browser (like Gmail, Facebook, or Canva). Technologies: HTML, CSS, JavaScript, and frameworks like React, Angular, Vue. Desktop App Development Apps for computers (Windows, macOS, Linux). Examples: Microsoft Word, Photoshop. Languages/Frameworks: C#, Java, Electron, Python, etc. Hybrid or Cross-Platform App Development Apps built once and run on multiple platforms (Android, iOS, Web). Tools: Flutter, React Native, Ionic. The steps in app development usually include: Planning – defining purpose, features, and audience. Designing – creating UI/UX (look and feel). Developing – writing the code. Testing – fixing bugs and improving performance. Deployment – launching on app stores or the web. Maintenance – updating, fixing, and improving over time. 👉 In simple terms: App development is the process of turning an idea into a working digital product that people can use.