JUniversal vs React Native vs Xamarin

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JUniversal
JUniversal

1
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React Native
React Native

7.7K
6.5K
+ 1
923
Xamarin
Xamarin

772
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+ 1
705
- No public GitHub repository available -

What is JUniversal?

The vision of JUniversal came from some guys at Nokia who possess considerable expertise both in Java and in building cross-platform apps. They built this tool to provide an elegant way to translate source code and make it useful across multiple platforms. JUniversal offers you the freedom to write your shared code in Java and then translate it to C# (available now) or to C++/Objective C++ (coming soon). You can also combine JUniversal with Google’s j2objc translator to translate Java to Objective-C for iOS.

What is React Native?

React Native enables you to build world-class application experiences on native platforms using a consistent developer experience based on JavaScript and React. The focus of React Native is on developer efficiency across all the platforms you care about - learn once, write anywhere. Facebook uses React Native in multiple production apps and will continue investing in React Native.

What is Xamarin?

Xamarin’s Mono-based products enable .NET developers to use their existing code, libraries and tools (including Visual Studio*), as well as skills in .NET and the C# programming language, to create mobile applications for the industry’s most widely-used mobile devices, including Android-based smartphones and tablets, iPhone, iPad and iPod Touch.
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Why do developers choose JUniversal?
Why do developers choose React Native?
Why do developers choose Xamarin?
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      What companies use JUniversal?
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      What tools integrate with JUniversal?
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      What are some alternatives to JUniversal, React Native, and Xamarin?
      Ionic
      Free and open source, Ionic offers a library of mobile and desktop-optimized HTML, CSS and JS components for building highly interactive apps. Use with Angular, React, Vue, or plain JavaScript.
      Flutter
      Flutter is a mobile app SDK to help developers and designers build modern mobile apps for iOS and Android.
      Apache Cordova
      Apache Cordova is a set of device APIs that allow a mobile app developer to access native device function such as the camera or accelerometer from JavaScript. Combined with a UI framework such as jQuery Mobile or Dojo Mobile or Sencha Touch, this allows a smartphone app to be developed with just HTML, CSS, and JavaScript.
      PhoneGap
      PhoneGap is a web platform that exposes native mobile device apis and data to JavaScript. PhoneGap is a distribution of Apache Cordova. PhoneGap allows you to use standard web technologies such as HTML5, CSS3, and JavaScript for cross-platform development, avoiding each mobile platforms' native development language. Applications execute within wrappers targeted to each platform, and rely on standards-compliant API bindings to access each device's sensors, data, and network status.
      NativeScript
      NativeScript enables developers to build native apps for iOS, Android and Windows Universal while sharing the application code across the platforms. When building the application UI, developers use our libraries, which abstract the differences between the native platforms.
      See all alternatives
      Decisions about JUniversal, React Native, and Xamarin
      Sezgi Ulucam
      Sezgi Ulucam
      Developer Advocate at Hasura · | 6 upvotes · 277.8K views
      Apache Cordova
      Apache Cordova
      PhoneGap
      PhoneGap
      React Native
      React Native
      Flutter
      Flutter
      #JavaScript
      #MobileFrameworks
      #NativeApps

      For a front end dev like me, using a mobile framework for side projects makes more sense than writing a native app. I had used Apache Cordova (formerly PhoneGap) before (because React Native didn't exist yet), and was happy with it. But once React Native came out, it made more sense to go that way instead. It's more efficient and smooth, since it doesn't have the simulation overhead, and has more access to hardware features. It feels cleaner since you don't need to deal with #WebView, using native UI widgets directly. I also considered Flutter . It looks promising, but is relatively new to the game, and React Native seems more stable for now.

      MobileFrameworks #JavaScript NativeApps

      See more
      Sezgi Ulucam
      Sezgi Ulucam
      Developer Advocate at Hasura · | 7 upvotes · 212.1K views
      Expo
      Expo
      Xcode
      Xcode
      React Native
      React Native
      Android Studio
      Android Studio
      Android SDK
      Android SDK

      I've recently switched to using Expo for initializing and developing my React Native apps. Compared to React Native CLI, it's so much easier to get set up and going. Setting up and maintaining Android Studio, Android SDK, and virtual devices used to be such a headache. Thanks to Expo, I can now test my apps directly on my Android phone, just by installing the Expo app. I still use Xcode Simulator for iOS testing, since I don't have an iPhone, but that's easy anyway. The big win for me with Expo is ease of Android testing.

      The Expo SDK also provides convenient features like Facebook login, MapView, push notifications, and many others. https://docs.expo.io/versions/v31.0.0/sdk/

      See more
      React
      React
      Redux
      Redux
      AngularJS
      AngularJS
      React Native
      React Native
      redux-saga
      redux-saga
      Apache Cordova
      Apache Cordova
      #JavascriptMvcFrameworks

      We had contemplated a long time which #JavascriptMvcFrameworks to use, React and React Native vs AngularJS and Apache Cordova in both web and mobile. Eventually we chose react over angular since it was quicker to learn, less code for simple apps and quicker integration of third party javascript modules. for the full MVC we added Redux.js for state management and redux-saga for async calls and logic. since we also have mobile app along with the web, we can shere logic and model between web and mobile.

      See more
      Vishal Narkhede
      Vishal Narkhede
      Javascript Developer at getStream.io · | 19 upvotes · 190K views
      atStreamStream
      Stream
      Stream
      React Native
      React Native
      Chat by Stream
      Chat by Stream
      JavaScript
      JavaScript
      Expo
      Expo
      styled-components
      styled-components
      Babel
      Babel

      Recently, the team at Stream published a React Native SDK for our new Chat by Stream product. React Native brings the power of JavaScript to the world of mobile development, making it easy to develop apps for multiple platforms. We decided to publish two different endpoints for the SDK – Expo and React Native (non-expo), to avoid the hurdle and setup of using the Expo library in React Native only projects on the consumer side.

      The capability of style customization is one a large deal breaker for frontend SDKs. To solve this, we decided to use styled-components in our SDK, which makes it easy to add support for themes on top of our existing components. This practice reduces the maintenance effort for stylings of custom components and keeps the overall codebase clean.

      For module bundling, we decided to go with Rollup.js instead of Webpack due to its simplicity and performance in the area of library/module providers. We are using Babel for transpiling code, enabling our team to use JavaScript's next-generation features. Additionally, we are using the React Styleguidist component documentation, which makes documenting the React Native code a breeze.

      See more
      Gustavo Muñoz
      Gustavo Muñoz
      Web UI Developer at Globant · | 8 upvotes · 230.8K views
      Flutter
      Flutter
      React
      React
      React Native
      React Native
      Dart
      Dart
      Android Studio
      Android Studio
      Visual Studio Code
      Visual Studio Code
      JavaScript
      JavaScript
      #Flare

      In my modest opinion, Flutter is the future of mobile development. The framework is as important to mobile as React is to the web. And seeing that React Native does not finish taking off, I am focusing all my efforts on learning Flutter and Dart. The ecosystem is amazing. The community is crazy about Flutter. There are enough resources to learn and enjoy the framework, and the tools developed to work with it are amazing. Android Studio or Visual Studio Code has incredible plugins and Dart is a pretty straight forward and easy-to-learn language, even more, if you came from JavaScript. I admit it. I'm in love with Flutter. When you are not a designer, having a framework focused on design an pretty things is a must. And counting with tools like #flare for animations makes everything easier. It is so amazing that I wish I had a big mobile project right now at work just to use Flutter.

      See more
      Greg Neumann
      Greg Neumann
      Indie, Solo, Developer · | 7 upvotes · 291.1K views
      Xamarin
      Xamarin
      .NET Core
      .NET Core
      Xamarin Forms
      Xamarin Forms
      ASP.NET
      ASP.NET
      Quasar Framework
      Quasar Framework
      Electron
      Electron
      Vue.js
      Vue.js
      TypeScript
      TypeScript

      Finding the most effective dev stack for a solo developer. Over the past year, I've been looking at many tech stacks that would be 'best' for me, as a solo, indie, developer to deliver a desktop app (Windows & Mac) plus mobile - iOS mainly. Initially, Xamarin started to stand-out. Using .NET Core as the run-time, Xamarin as the native API provider and Xamarin Forms for the UI seemed to solve all issues. But, the cracks soon started to appear. Xamarin Forms is mobile only; the Windows incarnation is different. There is no Mac UI solution (you have to code it natively in Mac OS Storyboard. I was also worried how Xamarin Forms , if I was to use it, was going to cope, in future, with Apple's new SwiftUI and Google's new Fuchsia.

      This plethora of techs for the UI-layer made me reach for the safer waters of using Web-techs for the UI. Lovely! Consistency everywhere (well, mostly). But that consistency evaporates when platform issues are addressed. There are so many web frameworks!

      But, I made a simple decision. It's just me...I am clever, but there is no army of coders here. And I have big plans for a business app. How could just 1 developer go-on to deploy a decent app to Windows, iPhone, iPad & Mac OS? I remembered earlier days when I've used Microsoft's ASP.NET to scaffold - generate - loads of Code for a web-app that I needed for several charities that I worked with. What 'generators' exist that do a lot of the platform-specific rubbish, allow the necessary customisation of such platform integration and provide a decent UI?

      I've placed my colours to the Quasar Framework mast. Oh dear, that means Electron desktop apps doesn't it? Well, Ive had enough of loads of Developers saying that "the menus won't look native" or "it uses too much RAM" and so on. I've been using non-native UI-wrapped apps for ages - the date picker in Outlook on iOS is way better than the native date-picker and I'd been using it for years without getting hot under the collar about it. Developers do get so hung-up on things that busy Users hardly notice; don't you think?. As to the RAM usage issue; that's a bit true. But Users only really notice when an app uses so much RAM that the machine starts to page-out. Electron contributes towards that horizon but does not cause it. My Users will be business-users after all. Somewhat decent machines.

      Looking forward to all that lovely Vue.js around my TypeScript and all those really, really, b e a u t I f u l UI controls of Quasar Framework . Still not sure that 1 dev can deliver all that... but I'm up for trying...

      See more
      Vaibhav Taunk
      Vaibhav Taunk
      Team Lead at Technovert · | 28 upvotes · 472.3K views
      .NET Core
      .NET Core
      Angular CLI
      Angular CLI
      React
      React
      MongoDB
      MongoDB
      Flutter
      Flutter
      React Native
      React Native
      Postman
      Postman
      Markdown
      Markdown
      Visual Studio Code
      Visual Studio Code

      I am starting to become a full-stack developer, by choosing and learning .NET Core for API Development, Angular CLI / React for UI Development, MongoDB for database, as it a NoSQL DB and Flutter / React Native for Mobile App Development. Using Postman, Markdown and Visual Studio Code for development.

      See more
      Interest over time
      Reviews of JUniversal, React Native, and Xamarin
      Avatar of tonyxiao
      Economics
      Review ofReact NativeReact Native

      Native iOS developer here. One of the most important thing React Native managed to accomplish is that it created a better single-platform development experience than the platform owner themselves did. It's faster and easier to develop a react native app than it is to develop an iOS app. And remember that react native is at the end of the day still native. So native views, native components, native modules. You get to pick and choose how much you want to be in JavaScript and how much you want to be in native.

      Review ofXamarinXamarin

      I'm working in Huge company and I'm in charge to choose the cross-platform environment to develop Mobile application for all our services. I choose Xamarin but because the error i get everytime in Visual Studio, I want to leave it and recommand another solution. In fact that's why I'm here.

      Weird, Install VS2017 with Xamarin on a new PC Create a new app GOT ERRORS.....!!!!!

      Thank you for considering this

      How developers use JUniversal, React Native, and Xamarin
      Avatar of Google
      Google uses JUniversalJUniversal

      Comment from HackerNews (https://news.ycombinator.com/item?id=8998736)

      This is how Google Inbox and Google Spreadsheets works. See the slides from my recently produced GWT Create Session (http://t.co/ZvoaHxCoZT). J2ObjC slide deck here (https://docs.google.com/presentation/d/1mW_Plm5jAygELf7qjVK7...) Videos of the conference will be online soon.

      Prior to that, some 20% Googlers also produced the PlayN library (https://github.com/threerings/playn) This was taken over by Michael Bayne who added an iOS backend by Bytecode -> IKVM -> Mono conversion. I beleive j2objc and RoboVM backends exist now as well.

      The major benefit of the j2objc approach is the avoidance of GC in favor of ARC, the conversion of message-sends into C-method calls when possible, and integration with existing iOS toolchain.

      When we started, it seemed like an iffy idea, but after developing a product delivered to millions of users on a high volume site (gmail) that has 70% code sharing, and being able to simultaneously develop, test, and deploy across the platforms reasonably efficiently, a lot of skeptics have become converts to the concept.

      Avatar of Kurzor, s.r.o.
      Kurzor, s.r.o. uses React NativeReact Native

      React Native is great in that it reduces the overhead of writing native code based on a web app. If written in a good style, Redux part of the app can often just be copied or shared in the Native app - and it just works! What a timesaver.

      Avatar of Foundbite
      Foundbite uses XamarinXamarin

      Xamarin enables us to develop for 3 platforms (iOS, Android and Windows Phone) with one core codebase coded in C#. Xamarin has allowed us to release an app on all three platforms and develop them simultaneously - not bad for a team of 2!

      Avatar of Ryan VanBelkum
      Ryan VanBelkum uses React NativeReact Native

      The framework used to write the mobile apps in this project. I've chosen this because of the "write once run all" (ios and android) mentality.

      Avatar of AmericanBibleSociety
      AmericanBibleSociety uses React NativeReact Native

      We are not currently using this product but we have very high interest in learning and using this for mobile apps.

      Avatar of Ana Phi Sancho
      Ana Phi Sancho uses XamarinXamarin

      Self taught : acquired knowledge or skill on one's own initiative. Platform: OSX 10.8 or later. Mac computer user.

      Avatar of JINJA Ltd.
      JINJA Ltd. uses React NativeReact Native

      New features of our app are developed on React Native, so we could maintain a small dev team.

      Avatar of Tana
      Tana uses React NativeReact Native

      100% of our mobile codebase is shared between iOS and Android. Using along with TypeScript.

      Avatar of Robert Brown
      Robert Brown uses XamarinXamarin

      Build & ship OS X & iOS apps from Visual Studio on Windows. Requires paid team license.

      Avatar of Daniel Kovacs
      Daniel Kovacs uses XamarinXamarin

      Mobile app development with PCL and Xamarin.iOS and Xamarin.Android.

      Avatar of Olo
      Olo uses XamarinXamarin

      Cross platform, white labelled native mobile apps

      How much does JUniversal cost?
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