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Best Syntax Highlighter Apps

221+ iOS apps curated and reviewed

4.2 avg rating
18 free apps
Updated June 2026

Whether you're new to syntax highlighter or looking for an upgrade, our curated collection of 221+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Top Picks for Syntax Highlighter

Runestone Text Editor#1

Runestone Text Editor by Simon B. Støvring

Edit plain text and code
Editor's Choice
🛠️ Developer Tools
4.8😊(1.3K ratings)
FreeIn-App Purchases
#33in Developer Tools
Runestone Text Editor screenshot 1
Runestone Text Editor screenshot 2
Runestone Text Editor screenshot 3
Runestone Text Editor screenshot 4
Runestone Text Editor screenshot 5
Runestone Text Editor screenshot 6

A powerful text editor optimized for iPhone and iPad, featuring syntax highlighting for various languages, line numbers, search and replace, and other core editing functions. With additional premium features like customizable app icons, line highlighting, and more, it's a lightweight yet versatile tool for editing code and plain text on-the-go.

What We Love

  • 💎 Excellent text editor
  • 🚀 Smooth and responsive
  • 🎨 Customizable themes and appearance
  • 🔒 Secure file storage and sync

Room to Improve

  • 🐛 Occasional crashes or bugs
  • 🔍 Difficulty navigating files/folders
  • 📝 Limited functionality without premium
Koder Code Editor#2

Koder Code Editor by Reny Mustika

(S)FTP, Dropbox, Webdav, SSH
Strong Contender
🛠️ Developer Tools
4.6😐(9.3K ratings)
Free
#22in Developer Tools
Koder Code Editor screenshot 1
Koder Code Editor screenshot 2
Koder Code Editor screenshot 3
Koder Code Editor screenshot 4

A versatile code editor for iPad and iPhone, offering syntax highlighting, code autocomplete, file management for Dropbox, (S)FTP, and webdav, an SSH client, and more. Code anytime, anywhere with features like tabbed editing, custom key snippets, and a built-in terminal. Ideal for developers on the go.

What We Love

  • 🚀 Great for coding on the go
  • 👍 Clean and intuitive UI
  • 🚀 Efficient file management
  • 🚀 Supports multiple file formats

Room to Improve

  • 🐛 Crashes and stability issues
  • 🐛 Bugs when switching between apps
  • 🐛 File corruption and data loss
Textastic Code Editor#3

Textastic Code Editor by Alexander Blach

Text, Coding, SFTP Client, SSH
Worth Considering
🛠️ Developer Tools
4.7😊(2.4K ratings)
FreeIn-App Purchases
#13in Developer Tools
Textastic Code Editor screenshot 1
Textastic Code Editor screenshot 2
Textastic Code Editor screenshot 3
Textastic Code Editor screenshot 4
Textastic Code Editor screenshot 5
Textastic Code Editor screenshot 6

"Access a versatile text and code editor for iOS with syntax highlighting for 80+ languages, SFTP/SSH connections, Git support, and more. Enhance your coding experience on-the-go with features like code completion, external keyboard support, and split view multitasking. Try it now for efficient programming on your iPad or iPhone."

What We Love

  • 🚀 Highly performant
  • 👍 Versatile and feature-rich
  • 💡 Excellent integration with other apps (e.g. Working Copy)
  • 👍 Customizable and intuitive UI

Room to Improve

  • 🐛 Occasional crashes or freezes
  • 🔒 Restrictive paywall for basic functionality
  • 👎 Confusing file management and upload/download workflow

More Syntax Highlighter apps to explore

4
Python Editor App
Python Editor App
Python Editor App
Create and Run your Python 3
Free

Create and run Python 3 scripts on your iOS device with this ultimate Python editor app. Enjoy a user-friendly interface, syntax highlighting, code completion, pre-built snippets, and seamless integration with iOS features - code on the go effortlessly!

🛠️ Developer Tools
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5
JavaScript Anywhere JSAnywhere
JavaScript Anywhere JSAnywhere
JavaScript Anywhere JSAnywhere
JS, HTML and CSS for everyone.
Free

A portable programming editor for web engineers and designers since 2010, allowing users to write JavaScript, HTML, and CSS code with features like preview, console log display, project imports, and Dropbox integration. Minimalistic and user-friendly, it offers various project templates for different needs. Happy coding!

🔧 Utilities
(435)
6
HTML Editor
HTML Editor
HTML Editor
by Intrepid Corporation LTD
Free

This application is a lightweight HTML editor with syntax highlighting, code completion, live preview, and iCloud support. It allows you to edit HTML documents, insert tags easily, and export and share your work. Give it a try for efficient HTML editing on the go!

🛠️ Developer Tools
(682)
7
Programming Hub: Learn Coding
Programming Hub: Learn Coding
Programming Hub: Learn Coding
Code Java,C,Python,AI,Compiler
Free

Build your programming skills with interactive coding lessons covering languages like Java, C, and Python in a game-like learning environment. Start your coding journey today!

📚 Education
(9.8K)
8
Python Coding Editor & IDE App
Python Coding Editor & IDE App
Python Coding Editor & IDE App
Compiler - Run & Learn Py 3
Free

Compile and execute Python code on the go with this app. Write, test, and run Python scripts easily from your mobile device. Download now to streamline your coding experience!

🛠️ Developer Tools
(2.2K)
9
Kodex
Kodex
Kodex
A powerful code editor
Free

A sophisticated code editor for iPad and iPhone, offering multi-caret editing, regex search and replace, syntax highlighting, multiple window support, and more. Integrated with the Files app for seamless file access and editing. Optimized for external keyboards, with additional virtual keyboard features planned for upcoming versions.

🛠️ Developer Tools
(202)
10
View Source
View Source
View Source
by Roman Tomjak
Free
🔧 Utilities
(59)
11
Code Editor - Compiler & IDE
Code Editor - Compiler & IDE
Code Editor - Compiler & IDE
Programming on mobile
Free

A powerful code editor and compiler app for coding on-the-go, offering syntax highlighting, error checking, and real-time compilation. Write, edit, and test code seamlessly with ease. Download now to streamline your coding experience!

🛠️ Developer Tools
(38)
12
pythoni-run code,autocomplete
pythoni-run code,autocomplete
pythoni-run code,autocomplete
python3.13 Code Run Debug Libs
Free

An iOS app for learning and running Python 2.7 scripts with features like autocomplete, auto indent, code color, and more. Generate QR codes for sharing, access learning materials, and customize settings for a personalized learning experience.

🛠️ Developer Tools
(204)
13
Pyto IDE
Pyto IDE
Pyto IDE
Python, C/C++
Free

Pyto IDE is a mobile application that serves as an integrated development environment for programming in Python and C/C++. It includes a Python 3.10 Interpreter, standard libraries, over 100 third-party packages, and a C compiler for iPhone and iPad. Explore coding on-the-go with Pyto IDE!

🛠️ Developer Tools
(957)
14
Userscripts
Userscripts
Userscripts
User Script and Style Manager
Free

Discover an open-source Safari extension allowing you to save and execute custom JavaScript and CSS code on visited websites. Optimize your browsing experience with Userscripts!

🛠️ Developer Tools
(165)
15
Encode: Learn to Code
Encode: Learn to Code
Encode: Learn to Code
Learn coding at your pace
Free

Learn to code at your own pace with fun and interactive lessons offered by this app. Master languages like Python, Swift, HTML/CSS, SQL, and JavaScript through easy-to-understand lessons, hands-on exercises, and challenges. Track your progress and coding goals seamlessly. Discover more at [app-link].

📚 Education
(6.1K)
16
Bear - Markdown Notes
Bear - Markdown Notes
Bear - Markdown Notes
Clean text editor for focus
Free

Capture, write, and organize your life with a powerful Markdown app. Take notes, plan your day, journal thoughts, create lists and tasks, and much more. No signup required - simply open a note and write naturally.

📊 Productivity
(459)
17
The Magic Highlighter
The Magic Highlighter
The Magic Highlighter
Your search engine assistant.
$1.99

Introducing a Safari Extension for iPhone, iPad, and Mac that automatically highlights search terms on web pages from popular search engines. Search more efficiently and precisely with this tool.

📊 Productivity
(20)
18
Learn to code with Yolmo®
Learn to code with Yolmo®
Learn to code with Yolmo®
Your trusted coding companion
Free

Learn to code with Yolmo - Your trusted coding companion! Dive into a comprehensive self-guided learning environment with playgrounds for various programming languages. Join us to make coding easy and accessible for everyone.

📚 Education
(4.5K)
19
Highlighter for Safari
Highlighter for Safari
Highlighter for Safari
Annotate & take notes on pages
$2.99

Highlighter for Safari allows users to annotate web pages and save them for later reference. Enhance your browsing experience by highlighting important information with this convenient tool. Start highlighting now!

🔧 Utilities
(14)
20
Enki: Learn Coding/Programming
Enki: Learn Coding/Programming
Enki: Learn Coding/Programming
Python JavaScript SQL CSS Code
Free

Enki is an AI coach for learning coding, programming, and productivity tools, with personalized lessons, coding practice, interactive questions, and career advice. It offers features like explanations, hints, code reviews, and real-world examples to help you learn various skills including Python, JavaScript, SQL, and more. Join discussions, collaborate with others, and access 10,000 lessons in 30 skills. Start your coding journey today!

📚 Education
(1.1K)

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