Koder Code Editor vs Jayson
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Koder Code Editor
A powerful code editor for mobile devices, offering syntax highlighting for over 80 languages, remote file access, and a built-in terminal. Perfect for developers who need to code on the go with a well-designed interface.
- Syntax highlighting for 80+ languages
- Remote file access (SFTP, Dropbox, WebDAV)
- Built-in SSH client
- Tabbed editing
- Code autocomplete
- Snippet manager
- Editor themes
Read full descriptionHide full description
"Koder for iPad: Nerds Rejoice! You Can Code on Your iPad" -- GIZMODO / App of the day -- "Koder’s simple yet efficient interface is designed for touch editing. At just $5.99, you get an editor with a well-designed interface at a great price. If you want to code with your trusty iPad, then Koder is for you." -- AppAdvice -- "An accomplished code editor for many programming languages" -- 148Apps -- "Editing code on your iPad should never be that difficult again" --KillerStartups-- "The developers at iCodeLabs have done a great job optimizing the iPad’s real estate for code editing" --theiphoneappreview-- "The app for instant project creation and code editing, perfect for developers and programmers on the go." --tipsfortablets-- -- Koder was listed on the App Store as a 'Staff Favorites' in 82 countries -- Koder is a code editor for iPad and iPhone. It does have many features including syntax highlighting, snippet manager, tabbed editing, find and replace code, editor theme, remote and local files connections, and many more. With Koder you can code anytime and anywhere, no matter if you're at your desk or while on the go Features: - Syntax Highlighting ( Supports more than 80 languages : actionscript, actionscript3, active4d, ada, ampl, apache, applescript, asm-mips, asm-x86, asp-js, asp-vb, aspdotnet-cs, aspdotnet-vb, awk, batch, c, cobol, coffeescript, coldfusion, cpp, csharp, csound, css, d, dylan, eiffel, erl, eztpl, elixir, fortran, freefem, gedcom, gnuassembler, haskell, header, html, idl, java, javafx, javascript, jsp, latex, less, lilypond, lisp, logtalk, lsl, lua, markdown, matlab, mel, metapost, metaslang, mysql, nemerle, none, nrnhoc, objectivec, objectivecaml, ox, pascal, pdf, perl, php, plist, postscript, powershell, prolog, python, r, rhtml, ruby, sass, scala, sgml, shell, sml, sql, standard, stata, supercollider, tcltk, torquescript, udo, vb, verilog, vhdl, xml ) - Code Autocomplete - Code Function list - Access and Manage your Dropbox, (S)FTP, webdav and local files easily - Built In Terminal (SSH Client) - Tabbed editing - Extra Keyboard with Custom Key (Snippet) - Document Picker Support to open/import/export other app files from/to Koder - Find and replace code - Previewer Browser with View Source function - Editor theme with Custom Theme Editor - Extra Key / Additional Keys on Virtual Keyboard with open+close brackets keys - Screen-Lock, Manual and Auto Lock - Extracting Zip File on Local project - Sophisticated File Browser - iOS "Open In" support, from Koder to other app - vice versa - Change file/folder permission (CHMOD) on FTP/SFTP projects - Folder Synchronization between Local Project and FTP Project - Uploading files from desktop from browser or iTunes sharing - Expandable editing space - Bluetooth Keyboard Support - and many more … - Support multitasking for iPad - Support editing files from Working Copy using drag and drop NEWEST - Support Dark Theme - Compatibility with iOS 13 BUG REPORT/ PROBLEMS/ IDEAS : If you have any problems when using Koder, or you have ideas for Koder improvement, please mention us or message us directly at twiter @koderapp
Jayson
This app allows you to view and edit JSON files directly on your device. It offers features like tabbed browsing, split-screen comparisons, and integration with Siri Shortcuts and the Share Sheet for easy JSON parsing and management.
- Browse JSON files
- Table or syntax highlighted text view
- Tabbed interface
- Multiple splits for comparison
- Siri Shortcuts integration
- Share Sheet Actions
- URL schemes
Read full descriptionHide full description
Jayson is a JSON viewer and editor for iPhone and iPad. Browse JSON as a structure, edit values, and save your changes back to the file. Whether you're inspecting an API response, checking a config file, or making a quick fix on the go, Jayson turns raw JSON into something you can actually read and change. BROWSE AND EDIT - Open JSON files stored on your device or in iCloud Drive. - Toggle between a structured table view and syntax highlighted text. - Add new values and keys, and save your changes back to the file. - Parse text or the contents of a URL from your clipboard into JSON. - Highlight a key from a child of an array to get a quick overview of your data. TABS, SPLITS, AND WINDOWS - Switch between files, or different objects in a single file, using tabs. - Compare JSON in a single file or across files using multiple splits. - Open multiple windows on the iPad. WORKS WITH SHORTCUTS Jayson integrates with Shortcuts, which comes in handy for debugging API calls, previewing JSON files, and building workflows around JSON. - Pass a response from Get Contents of URL to Jayson to see how it is structured. - Open JSON as a document you keep working on, or as a temporary preview. - Format JSON and hand the result to the next action, using spaces or tabs. FREE, WITH AN OPTIONAL UPGRADE Jayson's core functionality is free. Browsing, editing, saving, splits, Shortcuts, and working with up to two tabs at a time cost nothing. A one-time in-app purchase enables having more than two tabs open at once, switching between light and dark themes, and personalizing the app icon, accent color and type icons. One purchase, no subscription.
Screenshots
Verdict
The clearest difference is in-app purchases: Koder Code Editor at none against Jayson's 1. Koder Code Editor also leads on ratings volume (12K vs 454) and iOS requirement (12.0 vs 26.0). Jayson's advantage is review sentiment (81% vs 72%). On price, rating, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Jayson sells 1 one-off in-app purchase. Koder Code Editor asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.6 for Koder Code Editor against 4.5 for Jayson. That said, the two scores are not equally well evidenced: Koder Code Editor has 12K ratings behind it against 454, so its average is the more settled of the two. Written reviews are what separate them: 72% of Koder Code Editor's written reviews are positive against 81% of Jayson's.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 15, 2026 and November 14, 2026 respectively.
| Parameter | Koder Code Editor | Jayson |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (12K ratings) — better | 4.5 (454 ratings) |
| Positive reviews | 71.7% of reviews | 80.7% of reviews — better |
| Number of ratings | 12K — better | 454 |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | #37 — better | #90 |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 35 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Reny Mustika | Simon B. Støvring |
Customer experience
Koder Code Editor
Jayson
User reviews
Koder Code Editor
From 12K App Store ratingsWhat we love
- 🚀 Great for coding on the go
- 👍 Clean and intuitive UI
- 🚀 Efficient file management
- 🚀 Supports multiple file formats
- 🚀 Seamless cloud integration
Room to improve
- 🐛 Crashes and stability issues
- 🐛 Bugs when switching between apps
- 🐛 File corruption and data loss
- 🐛 Unreliable SFTP/SSH connections
- 🐛 Lack of customization options
Jayson
From 454 App Store ratingsWhat we love
- 👍 Elegant and intuitive JSON editing interface
- 🎯 Perfect for FNF mod development and updates
- 📱 Excellent iOS implementation with native feel
- 🔧 Powerful JSON manipulation capabilities
- ⚡ Great Shortcuts and URL scheme integration
Room to improve
- 🐛 Frequent crashes and instability issues
- 🔋 High battery consumption and device heating
- ❌ Missing search functionality
- 📵 Safari browser support issues
- 🔒 Limited free features, paywall for advanced options
Bugs and requests
Koder Code Editor
Reported bugs
5 issues- Crashes when opening certain file types
- Inability to rename or delete files
- Inconsistent behavior when switching between apps
- Sync issues with cloud storage providers
- Performance degradation on larger files
Requested features
5 requests- Dark mode option
- Improved Git integration
- Terminal/console functionality
- Support for more programming languages
- Ability to disable line wrapping
Jayson
Reported bugs
6 issues- App crashes when opening large JSON files (89MB+)
- Crashes on regular use despite functionality
- Device freezing for extended periods
- Safari compatibility broken in recent updates
- Navigation back through JSON structure is unreliable
Show 1 moreShow fewer
- Accidental file exit when attempting to navigate
Requested features
9 requests- Search/find functionality within files
- JSON editing and modification capabilities
- XML format support
- Split-view for comparing different arrays
- Export functionality for edited JSON
Show 4 moreShow fewer
- Comment recognition in JSON files
- Plain text editor option
- Improved file size handling for large documents
- Better navigation controls on mobile devices
In-app purchases
Koder Code Editor
No in-app purchases
Jayson
- Unlock Everything$4.99









