JSON Master: Editor & Viewer
Tianjin Illuso Information Technology Co., Ltd. Productivity iPhoneiPadiPod touch
JSON Master: Editor & Viewer is a free Productivity app for iPhone and iPad by Tianjin Illuso Information Technology Co., Ltd. Rated 4.6/5 from 5 ratings.
- Rating
- 4.6
- 5 ratings
- Price
- Free
- on the App Store
- Size
- 41 MB
- Age 4+
- Updated
- Aug 13
- 2026 · v2.0.2
Screenshots
About JSON Master: Editor & Viewer
JSON Master is a professional JSON Formatter / Viewer / Converter for developers (offline iOS tool). Three key points upfront: 100% offline processing, privacy-safe, large file support — your data is never uploaded to any server. Core Features (Developer Favorites): JSON Formatter & Beautifier: One-click format/beautify/minify, with syntax highlighting support. JSON Viewer: Tree View / Text views for clear structure visualization. JSON Validator: Instant syntax error detection (with line numbers) for quick API response debugging. Fast Converter: Bidirectional JSON ↔ CSV / XML / Excel (.xlsx) conversion. Large File Support: Smoothly open and edit large files. Import Anywhere: Import from Clipboard / Files for debugging anytime. Why Choose JSON Master? • Privacy First: All formatting, validation, and conversion happen locally on your device. • Focused & Distraction-Free: Clean interface with no redundant steps, perfect for quick data inspection and fixing. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://legal.rkvpxdr.com/privacy.html
Ratings & reviews
4.6
5 ratings
What’s new
Version 2.0.2 · Updated August 13, 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.
App privacy
The developer, Tianjin Illuso Information Technology Co., Ltd., reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers: Device ID
- Usage Data: Advertising Data
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Identifiers: Device ID
- Usage Data: Advertising Data
Used for: Third-Party Advertising
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| JSON Master: Editor & Viewer | 4.6 / 5 (5 ratings) | Free | August 13, 2026 | |
| JSON Viewer and Editor | – | Free | Oct 6, 2026 | Compare |
| PDF to XML Converter | – | Free | Oct 3, 2026 | Compare |
| JSON Tools: XLSX CSV to JSON | 2.7 / 5 (12) | Free | Oct 31, 2024 | Compare |
| XML to PDF: Code Printer | – | Free | May 28, 2026 | Compare |
| Plans - screenshot scheduler | – | Free | Jun 20, 2026 | Compare |
| DayPercent | – | Free | Dec 22, 2025 | Compare |