# Jayson vs UI Tracer

The clearest difference is price: Jayson at Free against UI Tracer's $2.99. Jayson also leads on ratings volume (425 vs 4) and chart position (#95 vs unranked). UI Tracer's advantage is rating (5.0 vs 4.5) and update cadence (every 2 days vs every 3 weeks). On ads, in-app purchases and iOS requirement there is nothing between them.

Jayson is free to download; UI Tracer costs $2.99 up front. Jayson sells 1 one-off in-app purchase and UI Tracer sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UI Tracer 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 4, 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 100% of UI Tracer's.

Jayson ships an update every 3 weeks, UI Tracer every 2 days. The most recent releases landed on October 17, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Jayson | UI Tracer |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [4.5 (425 ratings)](https://appshunter.io/ios/app/jayson/id1447750768/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/ui-tracer/id1644874973/reviews)** |
| Number of ratings | **425** | 4 |
| Positive reviews | 80.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#95** | — |
| Size | 41 MB | 20 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Simon B. Støvring](https://appshunter.io/developer/423532907) | [Leonid Liadveikin](https://appshunter.io/developer/1644874975) |

## What reviewers say

### Jayson

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

**Currently charting:** #95 Top Free · Developer Tools, #186 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


### UI Tracer

[App page](https://appshunter.io/ios/app/ui-tracer/id1644874973)

This app allows developers to preview various SwiftUI view styles without recompiling code. It offers comparisons across multiple Apple platforms, including iOS, iPadOS, watchOS, tvOS, and macOS, streamlining the design process.

**Highlights:** Preview SwiftUI view styles, Compare across iOS, iPadOS, watchOS, tvOS, macOS, No recompilation needed, Cross-platform code compatibility, Extensible view library

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip | $0.99 | one-time |
| Donation | $4.99 | one-time |


## Frequently asked questions

### Is Jayson free?

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

### Is UI Tracer free?

UI Tracer costs $2.99, and also offers in-app purchases.

### Which has better reviews, Jayson or UI Tracer?

UI Tracer is rated higher. Jayson averages 4.5 out of 5 from 425 ratings, while UI Tracer averages 5.0 from 4 ratings.

### Do Jayson or UI Tracer have ads?

Neither Jayson nor UI Tracer shows ads.

### Which is updated more often, Jayson or UI Tracer?

Jayson ships an update every 3 weeks, and UI Tracer every 2 days. Most recently, Jayson was updated on October 17, 2026 and UI Tracer on October 15, 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.*