One of the first decisions you need to make as a mobile app developer is whether to go for native or cross-platform development. Native development means using the specific languages and tools for each mobile platform, such as Swift or Objective-C for iOS and Java or Kotlin for Android. Cross-platform development means using a single codebase that can run on multiple platforms, such as React Native, Flutter, or Xamarin. Both approaches have their pros and cons, depending on your goals, budget, and preferences. Native development offers better performance, access to native features, and more control over the user interface, but it also requires more time, resources, and maintenance. Cross-platform development offers faster development, easier deployment, and code reuse, but it also comes with some limitations, such as lower performance, compatibility issues, and less customization.