Mobile apps are very important in today's fast-paced tech world. But making separate applications for Android operating system and iOS? which is exhausting, costly, and just not clever anymore This is specifically where React Native steps in a dominant framework that allows you develop applications over both platforms employing simply JavaScript and React. This roadmap will help you learn everything you need to know about React Native in a clear, simple way if you want to get into mobile development. Why is React Native so popular? Facebook (now Meta) made React Native, and many big companies, like Instagram, Shopify, Discord, Tesla, and others, use it. The reason is simple: it's a great way to make apps that look and feel like native apps, but use web technologies like JavaScript and React. Cross-platform compatibility – There is a single codebase that works on iOS as well as Android. More rapid development: You don't have to recruit separate groups for both iOS and Android development. Community support includes a lot of open-source contributions and packages that are ready to use. Live reload – You instantly see changes as you code. In short, it saves time, cost, and effort. That's why developers and new businesses love it. The Roadmap towards Study React Native! Today, we'll knock down the process of mastering React Native into simple stages. Implement such a plan to build a strong foundation, whether you're new to web development or moving from web to mobile. 1. Know how to use modern JavaScript (ES6+). You need to be conversant with JavaScript because React Native is built on it. Learn how to use variables (let, const), arrow functions, template literals, destructuring, spread/rest operators, and array methods like map, filter, and reduce. Also, learn how to utilize Promises and async/await to work with data that comes in at different times. 2. Learn how to use React on the web You will ought to understand the way React works on the web before you start developing mobile apps. Learn the basics, such as functional components, props, state, hooks (useState, useEffect), the lifecycle of a component, conditional rendering, and JSX. Once you know these things, using React Native will be easy for you. 3. Set up the environment for making things You can use either Expo CLI or React Native CLI to start building apps. Expo could be easier for beginners, however React Native CLI lets you change things more and works with native modules. First, install Node.js and npm. Then, use the command below to install Expo:

1. 1/6
Mohammad Jasim
React Native Development Strategy: Study once, then
Code Anywhere
mojasim.com/blogs/react-native-development-strategy
·June 13, 2025
Mobile apps are very important in today's fast-paced tech world. But making separate
applications for Android operating system and iOS? which is exhausting, costly, and just
not clever anymore This is specifically where React Native steps in a dominant framework
that allows you develop applications over both platforms employing simply JavaScript and
React. This roadmap will help you learn everything you need to know about React Native
in a clear, simple way if you want to get into mobile development.
Why is React Native so popular?
Facebook (now Meta) made React Native, and many big companies, like Instagram,
Shopify, Discord, Tesla, and others, use it. The reason is simple: it's a great way to make
apps that look and feel like native apps, but use web technologies like JavaScript and
React.
Cross-platform compatibility – There is a single codebase that works on iOS as
well as Android.

2. 2/6
More rapid development: You don't have to recruit separate groups for both iOS
and Android development.
Community support includes a lot of open-source contributions and packages
that are ready to use.
Live reload – You instantly see changes as you code.
In short, it saves time, cost, and effort. That's why developers and new
businesses love it.
The Roadmap towards Study React Native!
Today, we'll knock down the process of mastering React Native into simple stages.
Implement such a plan to build a strong foundation, whether you're new to web
development or moving from web to mobile.
1. Know how to use modern JavaScript (ES6+).
You need to be conversant with JavaScript because React Native is built on it. Learn how
to use variables (let, const), arrow functions, template literals, destructuring, spread/rest
operators, and array methods like map, filter, and reduce. Also, learn how to utilize
Promises and async/await to work with data that comes in at different times.
2. Learn how to use React on the web
You will ought to understand the way React works on the web before you start developing
mobile apps. Learn the basics, such as functional components, props, state, hooks
(useState, useEffect), the lifecycle of a component, conditional rendering, and JSX. Once
you know these things, using React Native will be easy for you.
3. Set up the environment for making things
You can use either Expo CLI or React Native CLI to start building apps. Expo could be
easier for beginners, however React Native CLI lets you change things more and works
with native modules. First, install Node.js and npm. Then, use the command below to
install Expo:

3. 3/6
> npm install -g expo-cli
✔ Installing expo-cli.
✔ Installing dependencies.
Success! Project initialization completed.
Installing React Native dependencies...
✓ React Native CLI installed successfully
Setting up development environment...
✓ Android Studio configured
✓ Xcode configured (for iOS development)
✓ Development tools installed
Ready to start development!
Run 'npx react-native run-android' for Android
Run 'npx react-native run-ios' for iOS
Create a new project using expo init MyFirstApp and you're good to go.
Run 'npx expo start' to start the development server.
4. Learn about the main parts and how to style them
Unlike the web, React Native doesn't use HTML and CSS. It has its own parts, like View
(like a div), Text, Image, ScrollView, FlatList, and TouchableOpacity. There are also
differences in how styling is done; instead of CSS classes, JavaScript objects are used.
Get used to stylesheets and learn how to use Flexbox for layout.

4. 4/6
5. Moving Between Screens
Most apps don't just have one screen. React Navigation is a well-known library that can
help you learn how to move between screens. There are Stack Navigators, Tab
Navigators, and Drawer Navigators, among other things. You can use these to make login
flows, tabbed interfaces, and side menus.
6. Managing the state
Use the useState hook to start with React's built-in state. You might need centralized
state management as your app gets bigger. If your app gets more complicated, you can
learn Redux, Zustand, or Recoil after you learn the Context API for simple cases.
7. Fetching Data from APIs
Most apps use data from outside sources. Learn how to connect to RESTful APIs using
fetch or axios. Get some practice getting data from JSONPlaceholder or any other fake
API. Use components like FlatList to deal with loading states, errors, and show the
results.
8.Code for a specific platform
The Platform module in React Native lets you write code that works only on certain
platforms. For instance:
if (Platform.OS === 'ios') {
// iOS specific code
} else {
// Android specific code
}
To modify the layout, design, or functionality of each platform without writing two apps,
this is easy.
9. Develop and run tests on real devices
By using the Expo Go app on your phone, you can see your work right away. To test, you
can use the Android Studio Emulator or Xcode's iOS simulator. Finally, test on real
devices to ensure that camera access, gestures, and alerts work as expected.

5. 5/6
10. Make your app known
Use Expo or React Native CLI to make APKs or app bundles when your app is ready. You
need to make developer accounts for both the Google Play Store and the Apple Software
Store before you can send in your software. Follow the rules for sending in apps, icons,
descriptions, and images.
What is it about React Native that makes it work on all platforms?
The idea behind React Native is "write once, use everywhere." You might have to make
changes for platform-specific quirks from time to time, but 80–90% of your code works on
both Android and iOS. This speeds up development and makes it easier to keep things
running smoothly over time. You can also use the same codebase to make frameworks
like React Native Web work with web browsers. This brings the word "cross-platform" to a
whole new level.
What do you think of the Java, Swift, and Kotlin code?
JavaScript is used in React Native apps, although they talk to native APIs over a bridge.
This means that you can keep writing native code when you need to. You can make a
custom native module in Java (for Android) or Swift (for iOS) and add it to your React
Native app if you want to use a hardware capability that JavaScript doesn't support. This
gives you freedom and power.
Things to think about: Tools and Libraries
Check out these libraries and tools as you go:
TypeScript adds types and better organization to code, making it safer.
Firebase is used for notifications, authentication, and a real-time database.
You can use React Native Paper and NativeBase right away.
Lottie: For moving pictures that are easy to make.
Use React Query or SWR to better control the state of your API.
Final Thoughts
React Native is a strong, fast, and developer-friendly way to make mobile apps that work
on more than one platform. React Native is a good choice for both individual developers
who want to make their first mobile app and businesses that want to save time and
money. It combines the ease of use of JavaScript with the power of native apps, so you
only need one codebase that works on many platforms.
If you stick to the plan, start small, and make something useful, you'll be amazed at how
quickly you grow. There is a learning curve with React Native, but it's worth it. The
community is there to help you every step of the way.

6. 6/6
Hey, My name is Mohammad Jasim. As a Full Stack and DevOps Engineer with over 4+
years of experience building scalable applications with React and Next.js by doing
automated workflows and smooth deployment on AWS (EC2, S3), and Digital Ocean with
reliable zero downtime deployments.