# Kodex vs Jayson

The clearest difference is rating: Jayson at 4.5 against Kodex's 4.2. Jayson also leads on review sentiment (81% vs 63%). Kodex's advantage is iOS requirement (13.4 vs 26.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Kodex sells 1 one-off in-app purchase and Jayson sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Jayson holds the better App Store score, 4.5 against 4.2. Both are backed by a comparable volume of ratings — 207 and 425 respectively. Written reviews point the same way: 63% of Kodex's written reviews are positive against 81% of Jayson's.

Kodex ships an update monthly, Jayson every 3 weeks. The most recent releases landed on October 19, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Kodex | Jayson |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (207 ratings)](https://appshunter.io/ios/app/kodex/id1038574481/reviews) | **[4.5 (425 ratings)](https://appshunter.io/ios/app/jayson/id1447750768/reviews)** |
| Number of ratings | 207 | **425** |
| Positive reviews | 63.1% of reviews | **80.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#74** | #87 |
| Size | 14 MB | 41 MB |
| Requires iOS | **13.4** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bruno Philipe Resende Silva](https://appshunter.io/developer/605892017) | [Simon B. Støvring](https://appshunter.io/developer/423532907) |

## What reviewers say

### Kodex

[App page](https://appshunter.io/ios/app/kodex/id1038574481)

**Currently charting:** #74 Top Free · Developer Tools (US App Store)

An advanced code editor for iOS devices, offering desktop-class features like multi-caret editing, regex search, and syntax highlighting for over 150 languages. It integrates with the Files app and supports external keyboards for a seamless coding experience.

**Highlights:** Multi-caret editing, Regex search and replace, Minimap for navigation, Syntax highlighting (150+ languages), External keyboard support, Files app integration, Customizable themes and fonts

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip | $4.99 | one-time |

**What reviewers like**

- 🚀 Powerful code editor
- 👍 Well-integrated with iPad features
- 🎨 Excellent syntax highlighting and theming
- 📁 Broad file format support
- 💡 Useful QuickEdit mode

**What reviewers complain about**

- 🐛 Frequent crashes and stability issues
- 🔍 Lack of search and replace functionality
- 🔀 Difficulty navigating between files
- 🚫 No option to run/compile code
- 📏 Forced word wrapping with no toggle

**Reported bugs**

- Crashes when opening certain file types
- Loses data after copy/paste and undo/redo
- Compatibility issues with latest iOS versions
- Overlapping UI elements in search/replace

**Requested features**

- Add search and replace feature
- Implement code execution/compilation
- Improve file management and navigation
- Provide option to disable word wrapping
- Introduce more keyboard shortcuts


### Jayson

[App page](https://appshunter.io/ios/app/jayson/id1447750768)

**Currently charting:** #87 Top Free · Developer Tools, #142 Top Grossing · Developer Tools (US App Store)

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:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Everything | $4.99 | one-time |

**What reviewers like**

- 👍 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

**What reviewers complain about**

- 🐛 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

**Reported bugs**

- 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

**Requested features**

- Search/find functionality within files
- JSON editing and modification capabilities
- XML format support
- Split-view for comparing different arrays
- Export functionality for edited JSON


## Frequently asked questions

### Is Kodex free?

Kodex is free to download, with in-app purchases available.

### Is Jayson free?

Jayson is free to download, with in-app purchases available.

### Which has better reviews, Kodex or Jayson?

Jayson is rated higher. Kodex averages 4.2 out of 5 from 207 ratings, while Jayson averages 4.5 from 425 ratings.

### Do Kodex or Jayson have ads?

Neither Kodex nor Jayson shows ads.

### Which is updated more often, Kodex or Jayson?

Kodex ships an update monthly, and Jayson every 3 weeks. Most recently, Kodex was updated on October 19, 2026 and Jayson on October 17, 2026.

### Which is more popular, Kodex or Jayson?

Kodex currently peaks at #74 in the App Store charts, and Jayson at #87. Chart position reflects recent download velocity rather than total install base.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*