What do you do if you want to develop mobile applications for different operating systems?

If you aim to create mobile apps for various operating systems, you have several options to explore. Firstly, you can opt for the native approach. For Android, you'd typically use Kotlin or Java along with the Android SDK, while for iOS, Swift is the language of choice, potentially leveraging SwiftUI as the latest iOS framework. Alternatively, you could go for a cross-platform approach. One popular option is Flutter, which utilizes Dart as the language and Flutter as the framework. Another contender is React Native, where you'd work with JavaScript or TypeScript. Once you've decided on the approach and framework, the next step is to familiarize yourself with the tools and learn how to use them effectively in building your applications.

If you prioritize performance and platform-specific user experience, go for native development. If you need to balance time to market and budget, consider cross-platform frameworks like React Native or Flutter. If you want quick development and cost-efficiency, Progressive Web Apps are worth exploring.

If i want to develop an mobile app to support different operating systems then i will go with Kotlin Multiplatform to create the hybrid app, because its concise and easy to use hybrid framework. Including Desktop app too. I will not go with React native due to its packaging issues. I will prefer KMP over Flutter. But concepts are same for KMP and Flutter, if you are good in jetpack compose then you can easily learn Flutter like with in a month same goes for Kotlin MultiPlatform.

You should always build a mobile app using cross-platform except when: - you already have native developers - you have plenty of time and money - you will need exceptionally strong security - you will need intensive graphic capabilities (such as Augmented Reality, Mixed Reality, live filters, etc)

Native Development: 1. Android: Java/Kotlin, Android Studio 2. iOS: Swift/Objective-C, Xcode Cross-Platform Development: 1. Flutter: Dart, Flutter SDK, Flutter CLI 2. React Native: JavaScript, React, React Native CLI 3. NativeScript: JavaScript/TypeScript, NativeScript CLI

For Kotlin Multiplatform i will go with Kotlin for backend / business logic and compose for creating UI part. For Flutter i will go with dart to take care of UI and business logic. and Android Studio to create hybrid apps in KMP or Flutter.

User-Centered Design: Prioritize the user's needs and preferences. Usability: Ensure ease of use and efficiency. Visual Design: Create visually appealing and consistent interfaces. Navigation: Design intuitive pathways through the app. Feedback: Provide clear responses to user actions. Accessibility: Make the app usable for everyone. Performance: Optimize speed and responsiveness. User Testing: Gather feedback and improve iteratively.

Version Control: Use Git for tracking changes and collaborating. Branching: Work on features in separate branches. Commit Often: Make frequent, descriptive commits. Code Review: Review code for quality and consistency. Documentation: Document code for clarity and maintenance. Standards: Enforce coding standards and conventions. Dependencies: Manage dependencies efficiently. Testing: Write automated tests for validation. Refactoring: Regularly improve code readability and efficiency. Backup: Back up code regularly for safety.

I will manage code in modules like if i need the native functionality then i will use expect keyword in the commonMain and for the android/ios or desktop i will use actual keyword. And i will code the logic for each feature by creating separate branches for it, to keep it clean and small code for review.

Unit Testing: Test individual components. Integration Testing: Test component interactions. Functional Testing: Validate system functionality. Regression Testing: Ensure changes haven't caused issues. Performance Testing: Evaluate system performance. Security Testing: Identify and mitigate vulnerabilities. Usability Testing: Assess user interface and experience. Automated Testing: Speed up repetitive tests. Exploratory Testing: Manually explore for issues. Continuous Testing: Integrate testing into development.