10 Best Java Compiler Apps for Android & iOS

Today programming is a very popular hobby. It is no surprise, as coding develops logical thinking and problem-solving.

Some people take up learning Java as a first programming language. This is quite reasonable because many mobile applications and sites are written in Java. This language is constantly developing, this is why it is so popular and widely respected.

What is more, Java works according to the principle called ‘write once, run anywhere’. So if you have written your code, it will work on every device that supports Java. Isn’t it great? You will never need to recompile, just use the code you have. Every Java Virtual Machine will understand it easily.

If you have never tried coding in general, we highly recommend that you firstly check these free learn to code apps.

Still, not everybody has a good computer with Eclipse or Intelij Idea installed on it. What if you have your smartphone only? It’s not a reason to postpone programming lessons.

In this article, we have collected the best Java compiler apps. Now you can run your codes wherever you are! It’s a perfect tool for beginners. There are applications that are available for Android, as well as iOS users.

Most of the apps are free of charge.

Java Compiler – Run .java Code

Java Compiler is a unique program for IT professionals. A full-featured environment for basic programming options: correction of written code, syntax highlighting.

Compile programs written in Java on your phone. Free of charge and without extra apps. Here you will not have to be distracted by advertisements.

Using the app is simple. It is enough to compile the desired app and run it. After that, you will be able to start editing the code. The syntax will be highlighted automatically, which is convenient when working long and hard.

In this app, you can work with all the basic DSA programs. In a separate tab, you can find useful surveys and assignments that will help you determine the level of your knowledge. It also contains interesting facts about programming and its history.

Java Compiler can be installed on any electronic device with Android 5.0 and newer versions installed.


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AIDE – IDE for Android

This app was created for Java and C++ developers. There are all the basic functions you might need for writing a good code.

AIDE is a great development environment. It will warn you about the possible error in your code and, therefore, save your time and energy.

If it is your first coding experience, make sure you check AIDE programming lessons. They are free of charge and very easy to understand. There are no complicated words and phrases that you will hardly understand.

The compiler itself is quite rapid, you won’t have to wait for too long. The average time of compiling is about 5 seconds, which is very fast for a mobile compiling app.

Another cool feature is a smart code navigator, which will help you indicate possible errors and other types of problems.

You should also check the Java debugger. It will show you the process of the code running, which makes fixing the code easier and faster.

Other great features are the following:

  • The possibility to expand collections.
  • ‘Undo’ function that is unlimited.
  • You can always use an online help center.
  • Fast work with complicated and large files.

As it is clear from the application’s name, only Android users can enjoy all the range of functions provided by the app. You can download it for free.


Jvdroid – IDE for Java

This is the best on-the-go compiler (and IDE) for Java. It is extremely easy to use, even if you see Java for the first time.

Once you have downloaded the app, you can start creating your first program. There are sample codes that will help you understand the syntax of this language.

Jvdroid supports the latest version of java – JAVA 11. It will enable you to get maximum out of the IDE and the compiler.

We need to warn you that you will need about 250-300MB of eternal memory, or the application will fail to compile your program.

There are also such great functions like code predictor and offline compilation. With these options, there will be no limits for you – code everywhere you can, no need to search for the computer and the Internet.

Jvdroid supports Maven projects and libraries – this is great if you are aimed at creating an application or a social network.

Once you have finished coding and testing, make sure you share your beautiful code with other developers.

Jvdroid is free. Download it now from Google Play.



This app is packed with various features you will like. Dcoder is aimed at professional users who have at least some experience with a few programming languages.

By the way, the number of languages supported by this app is impressive. Of course, it has Java. It’s not surprising, as Java is one of the most popular languages in any sphere of IT.

Still, if you happen to learn more, you can check all the range of Dcoder’s languages:

  • C, C#, C++, Swift
  • Python
  • Php
  • Ruby
  • Objective-C
  • Scala
  • Perl
  • Pascal
  • And many others!

Dcoder is also famous for its frameworks. You can find Django, Flask, Flutter, Ruby on Rails, React js. and other useful frameworks that you might need for your project.

We need to say that this app works perfectly with Html and CSS. If you are interested in frontend development, check this option – you will like it.

The IDE provided by Dcoder works extremely fast – at a blink of an eye it will see and indicate all the possible mistakes.

The time of compiling is also pretty fast: it will take you about 5-7 seconds. You can also enjoy unlimited undo and redo functions.

The application has a great number of social groups where you can get help or just communicate with other developers. You will find the links in the description of the application.

Dcoder is free of charge. You can get it now on Google Play Market.


Jstudio – ide for Java

This application has a pretty limited amount of functions. Still, it will be even better for unskilled developers. You won’t be confused with a wide range of options, there are only the most basic and necessary ones.

Jstudio has an advanced IDE that will ensure that your work gets faster and easier. It will tell you if there are syntax errors or possible exceptions.

You can copy, delete, and paste in any part of the code. It will not affect the running program. It will terminate and then run again, using the new code with your remarks.

Enjoy unlimited undo and redo options whebever you might need them – it will save you time and energy greatly.

Another cool thing you will like is code completion. It will be a nice tool if you are not attentive at times.

If you often forget to save your code, Jstudio will be a solution to this common problem. It has an auto backup. In other words, if you leave the app without saving, Jstudio will take care of this and save all of your codes for you.

By the way, if you want your child to take up programming, go check these best coding apps for kids. Who knows, maybe your kid will become a better coder than you are now?

The app is very reliable – you can fully trust it. Even if you are working on a serious project, you can still use Jstudio for creating your codes. There are no glitches and bugs.

The feedback that the app is receiving is 100% positive. It is rated 4 out of 5 in Google Play.

Jstudio has a debugger so that you can see the process of code running. Using the debugger in this app is easy, even if you hear about such a tool for the first time.

What is more, the app is quite small – its size is only 38MB. Can you imagine a good compiler with such a small size? As you can see now, it exists!

And there are no ads in the app. So you will get all the basic stuff for Java for free. You can get it in Google Play now.


CodeSnack IDE

Do you often travel or just go outside your house? It’s great! There is no need to stop programming if you like to lead an active lifestyle.

Start coding on the go! With the code compiler, it will be a pleasure. This application gives you a wide range of options, including compiler and professional IDE.

Code Compiler supports a great variety of programming languages:

  • Java, Kotlin, Go
  • C, C++, Swift
  • Python, PHP
  • Node.js, Ruby

What is more, you can choose not only the language but also its version. For example, if you are used to working with Java 8, you don’t have to put up and work with the latest Java 11.

Code Compiler has two versions. The first one is basic, it is free of charge but the range of functions is quite humble.

If you want more, you can always go premium. In this case, you will have:

  • 130MB of RAM
  • Absolutely no ads
  • Sync between any number of devices
  • Superfast execution time
  • Good graphics

Premium subscription will cost you 4.38$. You can download it right now from App Store.


Igneous – IDE for Java

This one more beautiful IDE that might boost your work and productivity. This app was created especially for Java developers to make their coding experience more pleasant and exciting.

This application has a full set of tools you might need for creating and then running your code.

You will get the following features and options for free:

  • 100% synchronization in real-time. If you make any external fixes, the changes will appear in the app automatically.
  • Code assistant. It is very smart, no mistakes will be ignored.
  • Debugger. This basic function should be in every good Java app. And Igneous is no exception to the rule.
  • Packages. They are vitally important for your projects, even if they are small and not too serious.
  • Error diagnostic. It will save your time greatly. Make sure you check all the warnings provided by the app.
  • A good editor that you can fully rely on.
  • Java 9. Igneous supports this popular version of the language.
  • Maven support. Skilled developers will appreciate it!
  • The possibility to edit all the files at any time.

You can download Igneous for free. Get it now from Google Play Market and start coding right now.


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Java Codes by Indian Innovation

Java Codes will be a useful platform to learn how to work with Java programming language. Start your introduction to programming here. Improve your level and get new skills without investing.

There are several hundred codes freely available here, parsed as illustrative examples. There are detailed descriptions of how to work with the code, and explanations are provided as you progress in writing the code.

You will not be left alone with a complex topic and unclear algorithms. Choose one of the proposed categories: codes, exploded examples, and interviews with prominent representatives of this profession.

Learn firsthand what mistakes other professionals have made and how to avoid repeating them. Get advice on what to look out for and how to speed up your learning.

In addition to the basic fundamentals, you will be able to practice writing and editing working code. If you do well, there’s a good chance you’ll do well in your next job interview.


Learn Java by Coding and Programming

Learn Java Programming is a whole guide to working with the Java language. Here you can take part in a popular lecture, learn the basics of a new profession or try yourself in the field.

In the app’s library, you will find modern tutorials and reference books that are written in simple language and suitable for a wide audience. With it, you will easily master the basic level and will be able to make significant progress in the app of your knowledge.

You will learn how to write code and make changes to an already completed version. Familiarize yourself with the “Popular Questions” tab, where complex tasks and obscure topics are systematically dealt with. Ask your questions and get clear and useful answers.

Learning Java Programming will prepare you for your upcoming job interview. You will be aware of the main tasks that interviewers use when working with candidates. With this app, you will realize that learning Java programming is not only useful but also enjoyable.


EASY CODER: Learn Java by AMensah

Be sure to join the ranks of those who want to learn all about the Java programming language. Easy Coder: Learn Java offers a clear and free training program. Both beginners and experienced professionals will find useful aspects here.

Inside you will find the newest and most popular methodological materials for learning the Java language. All the data is constantly updated and authenticated.

You can easily start from scratch and end up as a true expert in the field. You will be accompanied by experienced staff all the way, so any of your questions will be handled on time.

Choose a convenient training format. It can be electronic literature, video lessons, and practical classes. Take part in the survey and quiz.

This app completely replaces paid courses. You can continue learning at any time, which is convenient for people who are already working or learning. Easy Coder: Learn Java gives you the opportunity to get a high-paying specialty without leaving your home.

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Regina Bulanova
I am a junior software testing engineer and I like to review good apps.