Overview
Currently, with the mobile software development industry in particular, it is extremely developing, open and has a lot of potential, opportunities for developers. More specifically, the construction (build) of mobile applications on multiple platforms is a trend today. With the advent of frameworks it is possible to build native applications without using plain language for each platform. For example, Swift for iOS or Java for Android.
React Native and Flutter are the two most popular cross-platform mobile development frameworks being used to build thousands of mobile applications today. If you have to choose React Native vs Flutter, which one should you choose?
It is difficult to get the right answer to this question. The answer to this question depends on many factors. However, both React Native and Flutter are strong candidates with their own pros and cons. Let’s explore React Native vs Flutter based on a few criteria
Compare
1. Language
React Native:
React Native is written entirely in JavaScript using React. This is a huge benefit for React Native because JavaScript has always been ranked as one of the most popular and used programming languages in the world. Finding developers to write code in JavaScript is easy, and so learning React Native is pretty easy for any JavaScript developer.
Flutter:
Flutter is written in a language called Dart. Although Dart is relatively easy and is a good programming language, it is not as popular as JavaScript. A Flutter developer, will need to learn Dart. Typically, developers with C ++ / Java backgrounds may be more involved with Dart than JavaScript developers. However, in my opinion, Dart is a relatively new language, it will be a bit difficult. In the end, React Native won.
Winner: React Native
2. Corporate Backing (The back power)
React Native:
React Native is powered by Facebook and open sourced by Facebook in 2015. Facebook has a dedicated team of engineers working on React Native and making it better every day. Because Facebook is heavily invested in React Native, many of Facebook’s internal products are coded using React Native (Instagram, What’s app..vv ..). With Facebook’s strong participation in React Native, React Native has gained a lot of trust and popularity over the years.
Flutter:
Flutter is a relatively new framework when compared to React Native. It is backed by another giant, which is Google. Flutter is Google’s open source SDK for creating apps for Android and iOS using a single codebase. Google strongly supports Flutter, just like Facebook is supporting React Native. The Google community is invested to make Flutter one of the best solutions available for building cross-platform applications.
In short, with this criterion, both React Native and Flutter can be said to be eight ounces, half weight.
Winner: React Native, Flutter
3. What is Trending? (Trend)
If you look at the recent StackOverflow 2019 Survey, we can see which frameworks are trending today. The survey asked developers about their favorite frameworks.
You can see:
Flutter ranked higher with 75.4% and React Native also made a cut with 62.5% of the most popular frameworks.
However, one thing to note here is that React Native has been around for years and some people have been working on it. Meanwhile, Flutter is only one year old and is starting to become more popular. We will have to make similar comparisons next year to see how they compare. Based on current trends, we can win for Flutter.
Winner: Flutter
4. Performance
There is a common perception that Flutter works better than React Native. This may be because Flutter doesn’t have a JavaScript bridge like React Native to interact with native components. Dart code is compiled into machine code, thus eliminating bridged connections via JavaScript. This improves performance compared to React Native using JavaScript. However, there are not many records to compare. Based on the actual time, I think Flutter is superior.
Winner: Flutter
5. Adoption
React Native: It is widely adopted and its popularity is also due to React’s success. React developers can easily develop React Native mobile applications. Today, products like Facebook, Instagram, Uber Eats, Tesla, Bloomberg and many others use React Native for their mobile applications.
Flutter: With Google being a supporter of Flutter, this year it has also gained a lot of attention. Alibaba’s online shopping giant, has applied Flutter to one of its mobile apps. Google Ads and Hamilton music were also developed using Flutter. But apart from these, there aren’t many apps in the play store developed with Flutter. There are still very few applications developed with Flutter. And again, we need to revisit next year to see how many products have been using Flutter. 
Winner: React Native
6. Job Prospects (Job Prospects)
React Native has been around for a while, using React and JavaScript (two common options) that lead to better job prospects. The same StackOverflow survey in 2019, also shows that React Native is more desirable than Flutter. This tells us that there are more React Native jobs out there than Flutter.
It may not be possible to reach a quick conclusion about Flutter based on existing jobs. Flutter is still new and coming soon, and a few more years may be in demand for Flutter developers. But to this day, there’s a lot of React Native jobs when compared to Flutter jobs on the market. This is because React Native developers who are also React developers and React happen to be the most popular front end working framework available.
React Native ranked higher with 13.1% and Flutter with 6.7% of the most wanted Frameworks.
Therefore, learning React Native can be more beneficial when you are looking for job opportunities.
Winner: React Native
Conclusion
Although, React Native has some strong points, Flutter is also an emerging candidate and I’m sure it will be more popular in the coming days. If you are a more C ++ or Java developer, you may prefer Dart and thus prefer Flutter. Always adapt to the current trend and discover technology whenever you guys.
Thanks for reading.
Reference: https://medium.com/@adhithiravi/react-native-vs-flutter-what-are-the-differences-b6dc892f0d34