Comparison

Koder Code Editor vs Jayson

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Syntax highlighting for 80+ languages
  • Remote file access (SFTP, Dropbox, WebDAV)
  • Built-in SSH client
  • Tabbed editing
  • Code autocomplete
  • Snippet manager
  • Editor themes
Features
Read 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

About

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.

Highlights
  • Browse JSON files
  • Table or syntax highlighted text view
  • Tabbed interface
  • Multiple splits for comparison
  • Siri Shortcuts integration
  • Share Sheet Actions
  • URL schemes
Features
Read 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

Koder Code Editor4 screens
Jayson4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Jayson sells 1 one-off in-app purchase. Koder Code Editor asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 15, 2026 and November 14, 2026 respectively.

Scorecard5 real differences · 6 level
Koder Code Editor versus Jayson: the parameters behind the verdict, then further details
ParameterKoder Code EditorJayson
PriceFreeFree
Rating4.6 (12K ratings) — better4.5 (454 ratings)
Positive reviews71.7% of reviews80.7% of reviews — better
Number of ratings12K — better454
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#37 — better#90
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better26.0
Further details — not scored
Size35 MB41 MB
Age rating4+4+
DeveloperReny MustikaSimon B. Støvring

Customer experience

Koder Code Editor

All ratings11,603 ratings
Positive89.8%
Neutral3.6%
Negative6.7%
Written reviews1,186 reviews
Positive71.7%
Neutral10.4%
Negative18.0%

Jayson

All ratings425 ratings
Positive85.4%
Neutral6.1%
Negative8.5%
Written reviews83 reviews
Positive80.7%
Neutral7.2%
Negative12.0%

User reviews

Koder Code Editor

From 12K App Store ratings

What 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 ratings

What 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 more
  • 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 more
  • 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

None

Koder Code Editor

No in-app purchases

1 purchases

Jayson

One-time1
  • Unlock Everything$4.99

Questions

Is Koder Code Editor free?
Koder Code Editor is free to download, with no in-app purchases.
Is Jayson free?
Jayson is free to download, with in-app purchases available.
Which has better reviews, Koder Code Editor or Jayson?
Koder Code Editor is rated higher. Koder Code Editor averages 4.6 out of 5 from 12K ratings, while Jayson averages 4.5 from 454 ratings.
Do Koder Code Editor or Jayson have ads?
Neither Koder Code Editor nor Jayson shows ads.
Which is updated more often, Koder Code Editor or Jayson?
Koder Code Editor ships an update every 3 weeks, and Jayson every 3 weeks. Most recently, Koder Code Editor was updated on November 15, 2026 and Jayson on November 14, 2026.
Which is more popular, Koder Code Editor or Jayson?
Koder Code Editor currently peaks at #37 in the App Store charts, and Jayson at #90. Chart position reflects recent download velocity rather than total install base.

Other comparisons