Jayson vs DetailsPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Jayson
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.
- Browse JSON files
- Table or syntax highlighted text view
- Tabbed interface
- Multiple splits for comparison
- Siri Shortcuts integration
- Share Sheet Actions
- URL schemes
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Jayson is a JSON viewer and editor for iPhone and iPad. Browse JSON as a structure, edit values, and save your changes back to the file. Whether you're inspecting an API response, checking a config file, or making a quick fix on the go, Jayson turns raw JSON into something you can actually read and change. BROWSE AND EDIT - Open JSON files stored on your device or in iCloud Drive. - Toggle between a structured table view and syntax highlighted text. - Add new values and keys, and save your changes back to the file. - Parse text or the contents of a URL from your clipboard into JSON. - Highlight a key from a child of an array to get a quick overview of your data. TABS, SPLITS, AND WINDOWS - Switch between files, or different objects in a single file, using tabs. - Compare JSON in a single file or across files using multiple splits. - Open multiple windows on the iPad. WORKS WITH SHORTCUTS Jayson integrates with Shortcuts, which comes in handy for debugging API calls, previewing JSON files, and building workflows around JSON. - Pass a response from Get Contents of URL to Jayson to see how it is structured. - Open JSON as a document you keep working on, or as a temporary preview. - Format JSON and hand the result to the next action, using spaces or tabs. FREE, WITH AN OPTIONAL UPGRADE Jayson's core functionality is free. Browsing, editing, saving, splits, Shortcuts, and working with up to two tabs at a time cost nothing. A one-time in-app purchase enables having more than two tabs open at once, switching between light and dark themes, and personalizing the app icon, accent color and type icons. One purchase, no subscription.
DetailsPro
A design tool for Apple developers to create SwiftUI interfaces visually without coding. It supports various SwiftUI views, modifiers, and SF Symbols, with options to export to Xcode and Swift Playgrounds. An optional premium upgrade offers advanced prototyping and templates.
- Visual SwiftUI view creation
- Code-free design
- Export to Xcode and Swift Playgrounds
- SF Symbols integration
- Prototyping tools (Premium)
- Community templates
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DetailsPro is a design tool made for Apple designers and SwiftUI. - Create with SwiftUI views like VStack, Text, Image, and more - Make real designs without writing any code - Export to Xcode, Swift Playgrounds, and more - Available free forever with unlimited files - Optionally upgrade to Premium for all tools and templates - Design from iPhone, iPad, Mac, and Apple Vision Pro - Browse SF Symbols categories - Test widget designs natively on your Home Screen - Preview designs live on a second device Features: - VStack, HStack, ZStack - Text, Images, Shapes - Intuitive Overlays, Backgrounds, and Masks - Dividers, Spacers - Grids, Scrolls - Visual Effect Blur Views - SF Symbols - Gradients - Maps - Frame, Padding modifiers - All Text modifiers like kerning, lineHeight, font, fontWeight, and more - Liquid Glass modifiers - Effects modifiers like colorMultiply, opacity, offset, rotate, and scale - Dark mode and light mode - Built-in size templates for iPhone, iPad, and other devices - Import and export as .detailspro files - Export to Swift Playgrounds - Export to Xcode as Swift files - Download community templates Templates: Kick start your next design update with built-in SwiftUI design templates and community templates that are being updated all the time. Save time and get straight to your idea without having to set up a full development environment. Split Mode: Check your design in Dark Mode and Light Mode more easily than ever by previewing both at the same time. Choose from System, Dark, Light, or Split Mode for your design environment and switch between them instantly. "...the tools you need to start designing an app in SwiftUI using just an iOS device." - 9to5Mac Your DetailsPro subscription will automatically renew unless you turn off auto-renew at least 24 hours before the current period ends. You can go to Settings > iTunes & App Store > Apple ID > Subscriptions to manage your membership. Your iTunes Account will be charged when the purchase is confirmed. Read more about our terms and conditions here: https://detailspro.app/terms Read more about our privacy policy here: https://detailspro.app/privacy
Screenshots
Verdict
The clearest difference is update cadence: DetailsPro at every 5 days against Jayson's every 3 weeks. DetailsPro also leads on rating (4.8 vs 4.5) and device support (4 vs 2). On price, review sentiment, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Jayson sells 1 one-off in-app purchase and DetailsPro sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
DetailsPro holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 441 and 382 respectively. Written reviews split almost evenly too, at 81% and 81% positive.
Jayson ships an update every 3 weeks, DetailsPro every 5 days. The most recent releases landed on October 21, 2026 and October 20, 2026 respectively.
| Parameter | Jayson | DetailsPro |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (441 ratings) | 4.8 (382 ratings) — better |
| Positive reviews | 80.7% of reviews | 81.2% of reviews — better |
| Number of ratings | 441 — better | 382 |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | #90 | #80 — better |
| Devices | iPhone, iPad | iPhone, iPad, Mac, Vision Pro — better |
| Requires iOS | 26.0 | 26.0 |
| Further details — not scored | ||
| Size | 41 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Simon B. Støvring | Fun Focus Software LLC |
Customer experience
Jayson
DetailsPro
User reviews
Jayson
From 441 App Store ratingsWhat we love
- 👍 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
Room to improve
- 🐛 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
DetailsPro
From 382 App Store ratingsWhat we love
- 👍 Great UI and features
- 🚀 Intuitive and easy to use
- 💡 Helpful for learning SwiftUI
- 👍 Fantastic prototyping tool
- 👍 Saves time in design process
Room to improve
- 🐛 Crashes and freezes
- 🐛 Bugs and issues with saving/loading designs
- 🔧 UI needs improvement, outdated
- 🔧 Limited functionality compared to other design tools
Bugs and requests
Jayson
Reported bugs
6 issues- 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
Show 1 moreShow fewer
- Accidental file exit when attempting to navigate
Requested features
9 requests- Search/find functionality within files
- JSON editing and modification capabilities
- XML format support
- Split-view for comparing different arrays
- Export functionality for edited JSON
Show 4 moreShow fewer
- Comment recognition in JSON files
- Plain text editor option
- Improved file size handling for large documents
- Better navigation controls on mobile devices
DetailsPro
Reported bugs
4 issues- Crashes when modifying certain properties
- Designs disappearing or reverting unexpectedly
- Compatibility issues on M1 Macs
- Blurry text rendering on some devices
Requested features
5 requests- Support for more UI elements like text fields
- Integration with GitHub and other tools
- More examples and community designs
- Ability to create reusable components
- Support for additional SwiftUI features
In-app purchases
Jayson
- Unlock Everything$4.99
DetailsPro
- Premium Monthly$5.991 Month
- Premium Yearly$59.991 Year
- One-Time Purchase$129.00









