Jayson vs March BMS
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.
March BMS
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一款专门为电池保护板开发的APP,主要用来读取锂电池各串电池电压,充放电电流、保护状态,以及电池保护板的参数设置功能,让用户能够清晰的了解电池的状态,保障电池的使用安全。通过加入仪表板、电量、温度显示等功能,让用户更好的了解状态。
Screenshots
Verdict
The clearest difference is in-app purchases: March BMS at none against Jayson's 1. March BMS also leads on iOS requirement (9.0 vs 26.0). Jayson's advantage is ads (none vs shown) and chart position (#92 vs unranked). On price, update cadence 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. March BMS asks for nothing beyond the download.
Jayson ships an update every 3 weeks, March BMS fortnightly. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.
| Parameter | Jayson | March BMS |
|---|---|---|
| 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 | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #92 — better | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Simon B. Støvring | 杰 王 |
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
March BMS
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Jayson
- Unlock Everything$4.99
March BMS
No in-app purchases









