A comprehensive guide to this hybrid framework for building cross-platform mobile apps. Get started with ease and efficiency.

1. React Native Guide: A Hybrid Framework for
Mobile Apps
Everybody is searching for easier and quicker ways of making mobile apps that work
on both iPhones and Android phones. This is where React Native proves to be useful!
It’s a tool made by Facebook that assists developers with making portable
applications utilizing basic coding languages, such as JavaScript and React.
With React Native, developers can compose the code once and have the application
work on both types of phones. In this blog, we will explore what makes React Native
exceptional, why individuals like using it, and how it’s essentially altering the way
mobile apps are made. Subsequently, whether you’re contemplating making an
application, a developer who loves learning new things, or just someone curious
about development, this blog is for you!

2. What is React Native?
React Native is a JavaScript framework designed for building natively rendering
mobile apps for iOS and Android platforms. Born from the genius labs of Facebook,
it’s based on React, Facebook’s JavaScript library for building user interfaces, but
targets mobile platforms instead of browsers. Essentially, with React Native, you can
build mobile apps using only JavaScript and a few native components. The best part?
It’s not about building a “mobile web app” or even a “hybrid app” but truly native
apps.
Why Opt for React Native?
1. Cross-platform Development- The primary allure of React Native is its cross-
platform capabilities. Write the code once, and run it on both Android and
iOS. This capability can considerably reduce development time and costs.
2. Performance- While there are several hybrid solutions out there, what sets
React Native apart is its closer proximity to native performance. This is
because it uses native components rather than relying on WebView for
rendering.
3. Community Support- Being an open-source project, React Native enjoys
significant community support. Developers across the globe contribute to its
repository, ensuring a plethora of plugins, modules, and extensions are readily
available.
4. Live and Hot Reloading- One of the features developers love is the ability to
immediately see the result of the latest change. React Native’s ‘Live Reloading’
and ‘Hot Reloading’ features refresh and reload applications instantly, making
development a breeze.
5. Flexibility for Developers- Since it’s based on JavaScript, which is widely known
among developers, transitioning to React Native becomes simpler for those
already familiar with JS or React.

3. There are two approaches in the world of mobile
app development – native and hybrid.
native and hybrid (or cross-platform), each with its own advantages and
disadvantages. React Native actually falls somewhere between these two
approaches, offering a balance between performance and development efficiency.
1. Native App Development:
Native app development involves building applications for specific operating
systems, primarily iOS or Android, using programming languages and tools that are
native to those operating systems.
Languages:
Swift or Objective-C for iOS.
Kotlin or Java for Android.
IDEs (Integrated Development Environments):
Xcode for iOS.
Android Studio for Android.
Advantages:
High Performance.
Access to all native APIs and device features.
Better user experience with platform-specific UI/UX guidelines.
Disadvantages:
Separate codebases for each platform.
More time-consuming and expensive.
2. Hybrid/Cross-Platform App Development:
Hybrid app development enables developers to write the code once and run it on
multiple platforms, leveraging web technologies.
Languages: JavaScript, HTML5, CSS.
Frameworks: Cordova, Ionic, Flutter, React Native.
Advantages:

4. Single codebase for multiple platforms.
Faster development and reduced costs.
Easier maintenance and updates.
Disadvantages:
Potentially lower performance compared to native apps.
Limited access to some native APIs and features.
React Native:
React Native combines aspects of both native and hybrid app development. While it
allows developers to write most of their code in JavaScript and reuse it across
platforms, it also enables the incorporation of native code when necessary for
performance optimizations and access to native features.
Advantages:
Near-native performance.
Single codebase for iOS and Android.
Access to native modules and APIs.
Large community and ecosystem.
Disadvantages:
Some complex features might require native development.
Still not as performant as purely native apps in some cases.
Choice Between Native and Hybrid:
The choice between native and hybrid development depends on various factors
including:
Project Requirements: Native might be suitable for apps requiring high performance
and access to advanced device features. Hybrid could be beneficial for simpler apps
or those requiring quicker, cost-effective development.
Budget and Resources: Native development can be resource-intensive due to
separate codebases for each platform, while hybrid development can be more cost-
effective.
Development Timeframe: Hybrid apps can generally be developed more quickly due
to a single codebase approach.

5. Maintenance and Updates: Managing updates and maintenance is generally easier
with a single codebase in hybrid development compared to maintaining separate
codebases in native development.
React Native in the Real World
Many globally recognized companies trust React Native for their applications.
Facebook, of course, uses it for its app. Instagram, Airbnb, Walmart, and Tesla are
among the heavyweights who leverage the power of React Native, a testament to its
robustness and versatility.
Challenges with React Native
However, it’s worth noting that while React Native is powerful, it isn’t a panacea.
There are scenarios where it might not be the ideal choice:
1. Complex UI/UX Designs- For apps requiring intricate animations, interactions,
or transitions, native development might be more suitable.
2. Native Modules Requirement- If an app requires several native modules,
using React Native can become complicated, necessitating developers to write
platform-specific code.
3. Heavy Computation Apps- For CPU-intensive operations, native code can be
more efficient.
The Future of React Native
React Native has been continuously evolving since its inception. With Facebook’s
backing and the vibrant community around it, there’s a significant focus on making it
more performant, versatile, and developer-friendly.
Moreover, the trend towards adopting hybrid frameworks is growing, given the
speed of development and cost savings. Given these trends, React Native seems
poised to remain a popular choice among developers and businesses for the
foreseeable future.

6. Conclusion
React Native has solidified its position as a top hybrid framework. Its capacity to
convey close-to-native performance joined with the advantages of cross-platform
development, makes it a convincing decision for some undertakings.
In any case, likewise with any technology, understanding its strengths and limitations
is fundamental. React Native offers a lot, but it’s crucial to determine if it aligns with
the specific needs of a project. For many, it provides the right balance of
performance, flexibility, and speed, making it a go-to choice in the world of mobile
app development.
FAQ’s
Why hybrid apps are the future of mobile development?
Hybrid apps are the future of mobile development as they allow for faster, cost-
effective development with a single codebase for multiple platforms, thereby
addressing diverse user needs and improving reach. Additionally, advancements in
hybrid app frameworks are continually narrowing the performance gap between
native and hybrid apps, ensuring high-quality user experiences.
How can I install React Native?
You can install React Native using Node Package Manager (npm) or Yarn by running
the command npx react-native init MyNewProject or yarn create react-native-app
MyNewProject, respectively. Make sure to have Node.js and a package manager
installed beforehand.
Is React Native performance close to native?
While React Native might not match the performance of purely native apps in some
cases, it is generally performant enough for most use cases and can approach native
performance with optimizations.
Can I use custom/native modules with React Native?
Yes, React Native provides interfaces to use native modules that are written in Swift,
Objective-C, Java, or Kotlin, allowing you to use native code and libraries in your
project.
Originally published by: React Native Guide: A Hybrid Framework for Mobile Apps