React Native or Flutter? A Brief Guide to Choose the Best Framework! – Part II

React Native or Flutter? A Brief Guide to Choose the Best Framework! – Part II
React Native app development or Flutter app development
In Part I of this blog, we had compared the frameworks- React Native and Flutter based on numerous vital parameters. You may have a glimpse at Part I here.
This blog is an extension of Part I and here too, we will be focusing on a few more significant parameters to do a more detailed comparative analysis of both technologies.
We presume that by the end of this read, you will have better clarity on which framework is the best pick for your project development requirements. You will easily be able to decide whether to go with React Native app development or Flutter app development. So let’s quickly get started.

Comparative Analysis: React Native App Development Or Flutter App Development

React Native framework or Flutter framework
Learning Curve
React Native:
The learning curve of React Native is quite easier especially for those who are familiar with JavaScript. But working with React Native may get a bit difficult when it comes to mobile app development, though the framework has released several libraries, tutorials, documents, etc. to make the learning of this framework easier. 
Flutter too is not much difficult to learn. To understand this framework, developers need to learn the Dart language, which is pretty simple along with some basic knowledge of native iOS and Android development. However, this language is rarely opted by developers due to its low popularity. 
The Installation Process
React Native:
Node Package Manager (NPM) is required to install the RN framework. NPM can install the packages globally as well as locally. For this, it is essential for the React Native App developers to have knowledge of the location of the binary.
Also, the Homebrew package manager is required while installing React Native on macOS. The developers need to run the desired code for installing React Native on macOS and then access it from the command line.
For installing Flutter, one should download the binary for a particular platform from GitHub. For macOS, the developers should download the file- and add it as a PATH variable and then run the desired code.
The installation method of Flutter is a bit tedious and can be enhanced by supporting package managers like MacPorts, Homebrew, APT, YUM, etc. so that users can get rid of performing the extra steps while installing.
Architecture Supported by Each
React Native:
The latest architecture of React Native is based on 3 important threads namely: Native thread (where native code is placed and executed), JavaScript thread (where complete JavaScript code is kept and compiled), and Shadow thread (where the app’s layout is calculated).
React Native has a bridge between JavaScript and Native threads. According to this feature, the JavaScript code communicates with the Native API and the platform. Also, when it comes to iOS, RN makes use of JavaScriptCore separately for running all codes, whereas in the case of Android, it bundles the JavaScriptCore within the app. This will result in the increase of native functionality, however, it also increases the size of the app and that results in device lag or performance issues.
Flutter has a layered architecture. Developing a basic app in Flutter starts with platform-specific widgets or top-level root functions. Next, it is followed by basic widgets that communicate with rendering layers and the platform. Animation gestures exist just beyond the rendering layer, and this animation gesture transfers API calls to the foundation of the mobile app; also called Scaffold. It is run by a platform-specific embedder and a C/C++ engine. For separating the presentation layer from business logic, the Flutter app developers can utilize Flutter BLoC. Such an architecture eases the creation of complex apps with the use of simple and small components.
Development API and UI Components
React Native:
There are very few features and functionalities available in core React Native. The RN framework comes with just device access APIs and UI rendering. But using third-party libraries, this shortcoming can be overcome. For accessing native modules, RN makes use of several third-party libraries. You can find the list of the best-known UI component libraries here.
On the other hand, the Flutter framework comes with device API access, UI rendering components, testing, navigation, stateful management, and a plethora of libraries. In Flutter, you will have access to everything required for architecting mobile apps and, there is no need to use third-party libraries in Flutter. It also comes with widgets for Cupertino and Material Design that enable the developers to render the UI on both Android and iOS platforms with ease.
Convenience of Maintaining Code
React Native:
It is a bit difficult to upgrade and maintain code in React Native. One of the reasons behind this is the dependency on third-party libraries. Usually, the libraries are old and outdated and cannot be properly maintained, thus, affecting the code maintainability. Besides, there are chances that when the developers fork the code to suit the app requirement, it may interfere with the framework’s logic and slow down the overall development process.
On the contrary, code maintenance in Flutter is quite easier. It has simple code which allows the Flutter app developers to easily find issues, support third-party libraries, and even source external tools. Also, the hot-reloading property in Flutter is comparatively better than that in React Native and it helps to resolve several issues quickly.
Note: Modularity refers to the ability of a framework to enable different professionals with diverse experiences and technical skillsets to work under a single project.
React Native:
React Native offers less modularity support. At times, ReactJS developers, iOS developers, Android developers, etc. working on a project, may find it tough to match-up with each other.
Comparatively, Flutter provides better modularity for team diversity and also supports well while dividing the project codes into separate modules with its pub package system. The teams can easily add/change a code-base or construct various modules with the plug-in ability.
Testability of Code
React Native:
In React Native, there is no official support available for integration testing and UI-level testing. It offers just a few unit-level testing frameworks. Tools like Jest can be utilized for snapshot testing. Also, there are some third-party tools like Detox and Appium that can be used for testing the React Native apps even these aren’t supported officially by React Native.
Since Flutter functions with Dart, it provides excellent support for automated testing. Also, it offers a rich set of features for testing the applications at integration level, unit level, widget level, etc. Furthermore, it offers detailed documentation on testing the Flutter apps.

Concluding Views:

In this fast-paced digital era, having a high-quality, user-friendly, and responsive mobile app for your business is crucial. For developing such outstanding mobile apps, both React Native framework and Flutter framework have proved to be apt technologies. But which of these is the best pick for your project?
We have tried to explain that through this blog and its Part I. We hope we have imparted you an in-depth understanding of the good and the bad of both technologies. Also, these blogs will help you make an informed decision on whether to partner with a Flutter App Development Company or go for React Native App Development Company.
Here ends our blog!
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Ultimate React Native Component Libraries for Building Mobile Apps!

Ultimate React Native Component Libraries for Building Mobile Apps!
React Native UI Component Libraries
In recent times, the React Native framework has become the most talked-about mobile application framework. React Native UI libraries that this framework offers expedites the development cycle to a great extent as they include many components that the app can readily use. These are tried and tested by several React Native development companies and have been the favorite of developers across the globe, thereby resulting in worldwide adoption across various development communities.
This blog outlines the most commonly used React Native UI component libraries. Do try them for your next app development project. Let’s run through them.

The Best React Native UI Libraries to consider in 2021

React Native Component Libraries

React Native Elements

Being one of the most popular and easiest component libraries, ‘React Native Elements’ is known for providing a consistent look and feel to the apps. It is coded with native JavaScript. It does not follow an opinionated design system but provides a basic structure with its in-built components, making it a highly customizable cross-platform UI.
The packages from this library include several easy-to-use components like a badge, pricing, divider, overlay, platform-specific search bars, etc. Modifying or updating these components is easy because the props for all these components are present at one central location. In this library, the amount of boilerplate code to be written is comparatively reduced, as react native elements is based more on component structure than the actual design.

React Native Mapview

React Native Mapview provides map components for both iOS and Android platforms. The map style can be customized in several ways. The React Native developers can change the tracking location or the map view position, and also make any points clickable on Google Maps as desired. The zooming feature can be enabled to the specific coordinates or markers or it can be even animated. Markers can be dragged too on the map. The kit provides a wide range of component APIs like MapView, Callout, Marker, Polyline, Polygon, Overlay, Circle, etc.

React Native Vector Icons

This is an extremely useful library that contains a rich set of 3,000+ pre-made icons. These vector icons can be easily customized, extended, or styled to serve the needs of varying projects. It is being widely used in mobile apps as well as by other libraries like React Native Paper. It supports NavBar, Toolbar Android, TabBar, etc. with image sourcing and multi-styling fonts. This library is apt for logos, buttons, etc.

React Redux

Redux is a library that is standalone and can be used with any framework or UI like Ember, Vue, Angular, React, to name a few. React and Redux can be used independently or in combination. React Redux is made to work with the component model of React. If you outline how to get the values your components require from Redux, your component gets them as props. It creates a component which is a wrapper that manages the interaction logic with the store, so that it need not be written separately. It implements automatically complex optimizations from a performance perspective. If Redux is being used with UI Framework, one needs to use the “UI binding” library to connect Redux with the UI framework. React Redux is widely used to store and pass data.


This library provides the API that makes the process of creating powerful animations very simple and easy. It gives a low-level abstraction to the animated library API which permits flexibility for interactions based on gestures and animations. Because of its declarative approach, it serializes the interaction in JavaScript and has the ability to recreate it in native iOS and Android.

React Native Firebase

This is the formally recommended collection of packages that enables React Native support to all the Firebase services for both iOS and Android. Firebase is a Backend as a service that provides great advantage to build mobile applications with React Native. React Native Developers with Firebase as backend, can build MVP as it keeps the application cost very low and application prototyping is also very fast.


An event listener is a callback function that is called when an event object is created. This React Native Event Listener library allows the React Native Developers to add and manage the event listeners in React Native code. Event handling in React is more like inline JavaScript of previous years. React Native Elements can alternatively use event handling properties to respond to user inputs.

Additional Libraries

Other important libraries being used by React Native Mobile App Development Services are React-Native-SVG (to load SVG files, React-Native-Twilio-Video-Webrtc (for video calling), React-Native-photo-editor, React-Native-localize (for multiple languages supports), etc

Final Words:

These are some of the finest React Native UI libraries handpicked for you. Even beginners can easily start working on them. The motive of these libraries is to accelerate your React Native App development process. Therefore, these libraries prove immensely beneficial to a React Native App Development Company to build outstanding robust apps for versatile projects.
Have you used any of these libraries in your projects? Please feel free to comment about your experience and any hurdles you face.