# Jayson vs ONE Device

The clearest difference is rating: ONE Device at 5.0 against Jayson's 4.5. ONE Device also leads on in-app purchases (none vs 1) and iOS requirement (13.0 vs 26.0). Jayson's advantage is ratings volume (425 vs 3) and chart position (#96 vs unranked). On price, update cadence, ads and device support there is nothing between them.

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

ONE Device holds the better App Store score, 5.0 against 4.5. 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.

Jayson ships an update every 3 weeks, ONE Device monthly. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Jayson | ONE Device |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (425 ratings)](https://appshunter.io/ios/app/jayson/id1447750768/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/one-device/id1558929605/reviews)** |
| Number of ratings | **425** | 3 |
| Positive reviews | 80.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#96** | — |
| Size | 41 MB | 3 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Simon B. Støvring](https://appshunter.io/developer/423532907) | [ONE TECH, INC](https://appshunter.io/developer/1533900933) |

## What reviewers say

### Jayson

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

**Currently charting:** #96 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


### ONE Device

[App page](https://appshunter.io/ios/app/one-device/id1558929605)

This application facilitates a connection between your wireless device and a cloud platform. It offers feedback during the activation process, ensuring seamless integration.

**Highlights:** Device-to-cloud connectivity, Activation process feedback, Wireless device integration, Cloud platform synchronization

**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 ONE Device free?

ONE Device is free to download, with no in-app purchases.

### Which has better reviews, Jayson or ONE Device?

ONE Device is rated higher. Jayson averages 4.5 out of 5 from 425 ratings, while ONE Device averages 5.0 from 3 ratings.

### Do Jayson or ONE Device have ads?

Neither Jayson nor ONE Device shows ads.

### Which is updated more often, Jayson or ONE Device?

Jayson ships an update every 3 weeks, and ONE Device monthly. Most recently, Jayson was updated on September 23, 2026 and ONE Device 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.*