# Jayson vs MarkD

The clearest difference is price: Jayson at Free against MarkD's $3.99. Jayson also leads on chart position (#87 vs unranked). MarkD's advantage is in-app purchases (none vs 1) and update cadence (every 9 days vs every 3 weeks). On ads and device support there is nothing between them.

Jayson is free to download; MarkD costs $3.99 up front. Jayson sells 1 one-off in-app purchase. MarkD asks for nothing beyond the download.

Jayson ships an update every 3 weeks, MarkD every 9 days. The most recent releases landed on September 28, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Jayson | MarkD |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.5 (425 ratings)](https://appshunter.io/ios/app/jayson/id1447750768/reviews)** | — |
| Number of ratings | **425** | — |
| Positive reviews | 80.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#87** | — |
| Size | 41 MB | 16 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Simon B. Støvring](https://appshunter.io/developer/423532907) | [Jiwon Han](https://appshunter.io/developer/1682473120) |

## What reviewers say

### Jayson

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

**Currently charting:** #87 Top Free · Developer Tools, #144 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


### MarkD

[App page](https://appshunter.io/ios/app/markd-markdown-viewer/id6761923946)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Jayson free?

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

### Is MarkD free?

MarkD costs $3.99, with no in-app purchases.

### Do Jayson or MarkD have ads?

Neither Jayson nor MarkD shows ads.

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

Jayson ships an update every 3 weeks, and MarkD every 9 days. Most recently, Jayson was updated on September 28, 2026 and MarkD on September 21, 2026.

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