# Jayson vs Advanced JSON Viewer

The clearest difference is price: Jayson at Free against Advanced JSON Viewer's $1.99. Jayson also leads on rating (4.5 vs 3.3) and review sentiment (81% vs 40%). Advanced JSON Viewer's advantage is in-app purchases (none vs 1) and device support (4 vs 2). On ads and chart position there is nothing between them.

Jayson is free to download; Advanced JSON Viewer costs $1.99 up front. Jayson sells 1 one-off in-app purchase. Advanced JSON Viewer asks for nothing beyond the download.

Jayson holds the better App Store score, 4.5 against 3.3. That said, the two scores are not equally well evidenced: Jayson has 425 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 81% of Jayson's written reviews are positive against 40% of Advanced JSON Viewer's.

Jayson ships an update every 3 weeks, Advanced JSON Viewer every 6 weeks. The most recent releases landed on October 17, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Jayson | Advanced JSON Viewer |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.5 (425 ratings)](https://appshunter.io/ios/app/jayson/id1447750768/reviews)** | [3.3 (3 ratings)](https://appshunter.io/ios/app/advanced-json-viewer/id6739271287/reviews) |
| Number of ratings | **425** | 3 |
| Positive reviews | **80.7% of reviews** | 40.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#84** | #191 |
| Size | 41 MB | 5 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Simon B. Støvring](https://appshunter.io/developer/423532907) | [Acrogenesis LLC](https://appshunter.io/developer/1784592807) |

## What reviewers say

### Jayson

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

**Currently charting:** #84 Top Free · 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


### Advanced JSON Viewer

[App page](https://appshunter.io/ios/app/advanced-json-viewer/id6739271287)

**Currently charting:** #191 Top Paid · Developer Tools (US App Store)

This tool enhances JSON data viewing and editing within Safari and on your device. It offers beautiful formatting, syntax highlighting, and an interactive editor for efficient JSON management.

**Highlights:** Open and save JSON files, Beautiful JSON formatting, Syntax highlighting, Interactive editor, Light & dark modes, Error detection

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Jayson free?

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

### Is Advanced JSON Viewer free?

Advanced JSON Viewer costs $1.99, with no in-app purchases.

### Which has better reviews, Jayson or Advanced JSON Viewer?

Jayson is rated higher. Jayson averages 4.5 out of 5 from 425 ratings, while Advanced JSON Viewer averages 3.3 from 3 ratings.

### Do Jayson or Advanced JSON Viewer have ads?

Neither Jayson nor Advanced JSON Viewer shows ads.

### Which is updated more often, Jayson or Advanced JSON Viewer?

Jayson ships an update every 3 weeks, and Advanced JSON Viewer every 6 weeks. Most recently, Jayson was updated on October 17, 2026 and Advanced JSON Viewer on October 10, 2026.

### Which is more popular, Jayson or Advanced JSON Viewer?

Jayson currently peaks at #84 in the App Store charts, and Advanced JSON Viewer at #191. Chart position reflects recent download velocity rather than total install base.

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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.*