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JSON Master: Editor & Viewer

JSON Master: Editor & Viewer

JSON to CSV, XML, Excel Tool

3 ratings
3 reviews
With Ads
📊 Productivity
🛠️ Developer Tools
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • January 12, 2026
  • February 18, 2026

Features

Developer

嵩 张
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JSON Master: Editor & Viewer screenshot #1 for iPhone
JSON Master: Editor & Viewer screenshot #2 for iPhone
JSON Master: Editor & Viewer screenshot #3 for iPhone
iphone
ipad
🧾$17.99
In-App Purchase↘︎
⭐3
Reviews↘︎
❓8 answered
FAQ↘︎
📦~ in 4 days
Updates frequency↘︎
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About

This offline iOS tool formats, views, validates, and converts JSON data. It supports large files and offers privacy-safe, local processing for developers needing to debug API responses or transform data formats.

✓Offline JSON formatting and beautifying
✓Tree and text view for JSON visualization
✓Instant JSON syntax validation
✓JSON to CSV, XML, Excel conversion
✓Large file support
✓Import from clipboard and files
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What's New in JSON Master

2.0.1

February 18, 2026

Better, Faster, Stronger! New Home Interface: Re-designed with you in mind—access your core tools with fewer taps. Powerful Editing: We've fine-tuned the Editor and Calculator logic to handle your tasks more efficiently. Polished Details: Updated UI feedback and toast notifications for a more responsive feel. Reliability Update: Multiple internal enhancements to ensure JSON Master runs smoothly on all devices.

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Subscription plans

JSON Master Pro (Weekly)

No Ads, Unlimited Conversions & Pro Features.

$2.997 Days
3 Days trial
How to cancel JSON Master subscription ⁉️
1

In-App Purchases

$17.99

JSON Master Pro Lifetime

No Ads, Unlimited Conversions & Pro Features.

User reviews

Most RecentHighest RatedLowest Rated

Minimalist and Powerful

Love the minimalist design of JSON Master. The ability to switch between tree and code views is seamless. It’s very helpful for verifying data structures quickly. No unnecessary features, just a solid editor that feels native to iOS. If you’re looking for a reliable JSON tool for your iPhone, this is it.
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kychen8888kychen8888

Finally a clean JSON viewer that works！

I’ve tried several JSON tools on iOS, but most of them are either cluttered with ads or have a terrible UI. This one is surprisingly clean and intuitive. It makes reading nested structures so much easier on a smaller screen. The tree view is smooth and the overall performance is great even with larger files. Highly recommended for any dev on the go!
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Wow 6423Wow 6423

Perfect companion for mobile debugging

As a backend engineer, I often need to quickly check API responses when I'm away from my desk. This app handles complex JSON objects effortlessly. The editor is responsive, and the syntax highlighting is spot on. It has definitely improved my mobile workflow. Simple, fast, and does exactly what it promises. 5 stars!
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FAQ

Does JSON Master have ads?

Yes, JSON Master contains advertisements. As a free application with in-app purchases, advertisements are displayed to support its development and maintenance.

What is the pricing for JSON Master Pro?

JSON Master Pro is available via a weekly subscription at $1.99 per 7 days, which includes a 3-day free trial period.

How often is JSON Master updated?

The app was last updated on February 18, 2026, indicating a recent update. The latest version is 2.0.1.

What devices does JSON Master support?

JSON Master is compatible with iPhone, iPad, and iPod devices, running on iOS.

Is JSON Master safe for sensitive data?

Yes, JSON Master emphasizes privacy by performing all formatting, validation, and conversion locally on the device, ensuring your data is never uploaded to any server.

Can JSON Master handle large JSON files?

Yes, a key feature of JSON Master is its support for large files, allowing users to smoothly open and edit them.

What are the main benefits of using JSON Master?

Users appreciate its 100% offline processing, privacy-safe local operations, and the ability to quickly format, view, validate, and convert JSON data with a clean, distraction-free interface.

What is the age rating for JSON Master?

JSON Master has an age rating of 4+, making it suitable for a wide range of users.