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:
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.
Flutter:
For installing Flutter, one should download the binary for a particular platform from GitHub. For macOS, the developers should download the file- flutter.zip 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:
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.
Flutter:
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.
Flutter:
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.
Modularity
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.
Flutter:
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.
Flutter:
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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List of Top Local Databases used for React Native App Development in 2021!

List of Top Local Databases used for React Native App Development in 2021!
React Native App Development
React Native has become the most talked-about technology in the last couple of years and its popularity as a cross-platform framework owing to cost efficiency has made React Native Development the most preferred development technology in mobile app development companies. Due to the ever-growing demand, it is expected from the developers to build highly performant apps. One of the challenging decisions while architecting React Native apps is to select the right database for the project. The good news is, that the React Native framework comes with some really good choices available for data storage. So, in this blog, we will shed light on top React Native databases for 2021. Let’s explore them in detail. But before that, let’s quickly run through the significant factors that a React Native app development company should consider while choosing the apt database for React Native App Development.

Variables to be considered while choosing the Apt Database for Your Project

Data and App Complexity: complex data sets in the applications can cause severe app performance issues. So, databases that can store complex data should be chosen. Apps that have lower complexity can use simple databases so that such apps can be easily synced with the server. But complicated apps with multiple-user collaboration requirements require a complex database for ensuring seamless syncing.
Memory Handling: inadequate database memory management can lead to the crashing of apps. Hence, it should be ensured that memory management is done efficiently through processes like compaction, garbage collection, etc.
Line of Codes: if a higher number of code lines are used in a project for CRUD like operations, then an advanced database should not be the choice as the coding gets more cumbersome. This code complication deteriorates the performance of the app significantly.
Data Conflicts: the possibility of data conflicts increases when more collaboration related features are added to the app and data is being used concurrently. So, it is always good to select a database that handles data conflicts and concurrency and shares the conflict handling policies on the website or at least on repository pages.

Top React Native Databases for 2021!

React Native Databases
Realm
Realm is an object-oriented database that enables the creation of real-time and offline applications that run on both- wearable devices as well as smartphones. It is one of the top React Native databases amongst all the available ones. This database is highly preferred when the end goal of the project is building high-performance apps that can deal with a huge data flow. The database benefits both platforms- iOS and Android. It doesn’t depend on key-value stores as it has its own database engine. Realm allows the React Native app developers to frequently undergo tables, mapping classes, fields, foreign keys, etc.
Key Advantages of Realm:
  • Makes use of multiple encryption standards to ensure good security for diverse mobile platforms
  • Realm Synchronization service works locally in the background for recording user interactions and service requests and sends the data to the server after the device goes online.
  • Redux offline can be used to fulfill offline-first architecture requirements.
Firebase
For React Native development, Firebase supports real-time NoSQL DB. This database is known for its offline data modifications and data synchronization capabilities. Besides, it can handle M (model) and C (controller) of the MVC that is needed while building React Native applications.
Key Advantages of Firebase:
  • This database allows real-time data syncing for all the clients simultaneously.
  • Firebase offers a cross-platform API that can be easily set-up with minimum effort.
  • Firebase database can be directly accessed with a mobile device and so, the application servers are not needed.
  • Firebase supports the creation of real-time apps with offline persistence capabilities.
SQlite
SQLite is a relational database management system developed for offering local storage to React Native applications. ‘Lite’ in SQLite depicts the light-weight nature of this database. Also, this database is very easy to setup. It can be directly integrated with the mobile applications for accessing the database. For data encryption, SQLite can be used with an extension called SQLite Encryption Extension (SEE).
Key Advantages of SQLite:
  • This database can support offline persistence, simply by using a react-native-SQLite-storage plugin for data management within the mobile app.
  • SQLite is ACID-compliant and employs most of the SQL standards with just a few omissions. It comes with a file-based library architecture and some tools for easily and efficiently handling all data types.
PouchDB
This is a Java script database developed using a storage mechanism and CouchDB protocols. It stores the data in JSON format. This open-source database enables the React Native developers to read, create, delete, update, and query the objects using a singleJS API. Furthermore, PouchDB is compatible with MongoDB, CouchDB, PostgreSQL, and MySQL.
Key Advantages of PouchDB:
  • It allows data syncing using a supported server for running the apps online as well as offline.
  • Ensures speedier execution of queries.
  • Also, as PouchDB remains inside a browser, it is not necessary to run queries over the network resulting in faster execution of queries.
Vasern
This is an open-source, lightweight, and fast database used for React Native based application development for both- Android and iOS. It is developed with a robust server-side language-Golang, created by Google. Vasern’s API can also be utilized for syncing across app clients, local storage, and for cloud storage.
Key Advantages of Vasern:
  • Vasern ensures good performance of apps and speedier operations
  • Provides end-to-end database syncing
  • Support basic data-types like string, double, int, double, reference, datetime, etc.
  • Provides support to languages that use UTF – 8 coding.
Watermelon DB
This database is built on top of SQLite. It can scale a myriad number of records without impacting the application speed. This is perfectly optimized for the creation of complicated React Native apps with real-world performance.
Key Advantages of Watermelon DB:
  • It is a fast, multi-threaded, relational, and highly cached database.
  • It supports an offline first system for syncing with your own backend.
  • It allows static typing with flow
BerkeleyDB
This is a high-performing backend and allows the React Native developers to handle data in several ways. It comes with an API that is compatible with numerous languages and several platforms like Android and iOS.
Key Advantages of BerkeleyDB:
  • Simple to use
  • Provides support for industrial-strength transactions
  • Ensures concurrent access for multiple users
AsyncStorage
This is a local storage database and comes in-built with React Native. It enables React Native developers to persist data between reboots of the apps. It acts as an outstanding solution for saving the data that the app required, even when the app is being closed by the users.

Concluding Views:

Apart from the local databases mentioned here, there are several other databases available for the React Native app developers to utilize in their projects. But, the choice of a database used for React Native mobile app development ultimately depends on the project requirement, its scope, and end goals. For instance, Firebase suits perfectly when one has to develop real-time apps. Realm is great for almost every possible requirement, but comparatively, SQLite doesn’t provide the same level of performance, scalability, and security. Rather SQLite is good to go with when one requires to leverage the abilities of a relational database. So, the one that suits your requirements is the best choice for you.
Here we come to an end! We hope this write-up was insightful.
If you know any other React Native databases for app development, do share with us in the comments below.