Jayson vs RuntimeBrief
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.
RuntimeBrief
This app transforms local coding agent and repository activity into concise, evidence-backed project updates. It connects to a daemon on your Mac to display changes, progress, and attention-needed items, with each update linking to its supporting commit or scan. Features include a portfolio brief, native Claude Code tasks, and Siri/Shortcuts integration.
- Concise portfolio brief
- Evidence-backed project status
- Native Claude Code tasks
- Optional analyst answers via Codex CLI
- Local release summaries
- Siri and Shortcuts access
- Offline fictional demo
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RuntimeBrief turns activity from your local coding agents and repositories into short, evidence-backed project updates. Connect the app to the RuntimeBrief daemon running on your Mac to see what changed, what is still in progress, and what needs your attention. Each claim links back to its supporting commit, working-tree scan, or agent session. Features: • A concise portfolio brief across your registered projects • Evidence-backed project status and recent agent activity • Native Claude Code, Codex and Cursor tasks in registered projects with model and permission choices and provider-supported native handoff • Optional, on-demand analyst answers through your own Codex CLI login • Local Xcode, TestFlight, and App Store release summaries • Siri and Shortcuts access to project status • Saved briefs when your Mac is temporarily unavailable • A fully offline fictional demo requiring no account or server RuntimeBrief has no hosted account, analytics SDK, advertising SDK, or public cloud relay. Live project data stays under your control on your Mac and private network. Optional analyst processing follows the data controls of the ChatGPT workspace selected in Codex CLI. Native tasks use your existing provider login and follow that provider's account policies and the selected tool permissions. A Mac running runtimebriefd is required for live project data. The in-app demo can be explored without installing or configuring anything. Native tasks require the selected coding agent installed and signed in on that Mac. Provider-supported handoff also requires the corresponding native desktop app.
Screenshots
Verdict
The clearest difference is rating: RuntimeBrief at 5.0 against Jayson's 4.5. RuntimeBrief also leads on in-app purchases (none vs 1). Jayson's advantage is ratings volume (425 vs 1) and chart position (#85 vs unranked). On price, update cadence, ads and device support 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. RuntimeBrief asks for nothing beyond the download.
RuntimeBrief 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 1, so its average is the more settled of the two.
Jayson ships an update every 3 weeks, RuntimeBrief every 2 weeks. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.
| Parameter | Jayson | RuntimeBrief |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (425 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 80.7% of reviews | — |
| Number of ratings | 425 — better | 1 |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #85 — better | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 26.0 |
| Further details — not scored | ||
| Size | 41 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Simon B. Støvring | Prachi Jain |
Customer experience
Jayson
RuntimeBrief
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
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- 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
RuntimeBrief
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Jayson
- Unlock Everything$4.99
RuntimeBrief
No in-app purchases









