Jayson vs MaestroDeck
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.
MaestroDeck
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MaestroDeck brings your cloud E2E test suite to your pocket. Run Maestro end-to-end tests for your apps in the cloud, and follow every job live from your iPhone — no laptop required. WHAT YOU CAN DO • Watch test runs in real time — see each job pass, fail, or run. • Drill into any run — flows, timing and a clear pass/fail breakdown, all in one tap. • Track quality at a glance — pass-rate trends, outcomes and platform stats in Insights. • Never miss a result — push notifications and Live Activities the moment a run finishes. • Glance from your Home Screen — widgets with your latest run status. • Manage API keys to trigger and integrate runs from your CI. BUILT FOR MOBILE TEAMS Whether you ship daily or run nightly regression suites, MaestroDeck keeps your results one glance away. Choose the plan that fits — from a handful of runs to thousands a month. MaestroDeck is the companion app for maestrodeck.cloud. Sign in with the same account as your web dashboard.
Screenshots
Verdict
The clearest difference is in-app purchases: MaestroDeck at none against Jayson's 1. MaestroDeck also leads on iOS requirement (16.2 vs 26.0). Jayson's advantage is chart position (#84 vs unranked). On price, 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. MaestroDeck asks for nothing beyond the download.
| Parameter | Jayson | MaestroDeck |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (425 ratings) — better | — |
| Positive reviews | 80.7% of reviews | — |
| Number of ratings | 425 — better | — |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #84 — better | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 16.2 — better |
| Further details — not scored | ||
| Size | 41 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Simon B. Støvring | Ethan Morisset |
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
MaestroDeck
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Jayson
- Unlock Everything$4.99
MaestroDeck
No in-app purchases









