Cross-platform apps are software applications developed to run on multiple operating systems (OS) or platforms using a single codebase. Instead of writing separate code for each platform—like iOS, Android, or Windows—developers use cross-platform development tools or frameworks to write one codebase that works across all desired platforms.

Key Features:

• Single Codebase: One codebase serves multiple platforms, reducing development time and cost.

• Broad Reach: The app can be used by users on different devices and operating systems.

• Faster Development: Quicker to build and maintain compared to native apps for each platform.

• Consistent UI/UX: Helps maintain a unified look and feel across platforms.

Popular Cross-Platform Frameworks:

• Flutter (by Google): Uses Dart language; known for beautiful UIs and performance.

• React Native (by Meta): Uses JavaScript; allows native rendering and is widely adopted.

• Xamarin (by Microsoft): Uses C#; integrated with .NET ecosystem.

• Ionic: Uses web technologies like HTML, CSS, and JavaScript.

Pros:

• Cost-effective development

• Easier maintenance and updates

• Faster time to market

Cons:

• Performance may be slightly lower than native apps

• Limited access to device-specific features

• May require additional work for platform-specific customization