--- title: "JSON Master: Editor & Viewer - Reviews, Revenue and Downloads in United States | Apple App Store" description: "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 " --- # JSON Master: Editor & Viewer — United States > JSON to CSV, XML, Excel Tool ![JSON Master App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/dc/36/c6/dc36c65e-ac6b-ba51-37ab-9fb98450dad6/AppIcon-0-0-1x_U007emarketing-0-11-0-85-220.png/434x0w.png) **Developer:** [Tianjin Illuso Information Technology Co](https://apptail.io/developer/tianjin-illuso-information-technology-co-sCeoEb) **Category:** Productivity **Rating:** 4.6/5 (5 ratings) **Price:** Free **Bundle ID:** com.rkvpxdr.jsonmaster **Store:** Apple App Store **Country:** United States **Version:** 2.0.2 (released 2026-08-13) **Original Release:** 2026-01-12 **Languages:** English, French, German, Japanese, Korean, Portuguese, Chinese, Spanish **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6757484875) **AppTail Page:** [https://apptail.io/app/json-master-editor-viewer-SiCy/united-states](https://apptail.io/app/json-master-editor-viewer-SiCy/united-states) ## JSON Master Description 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): Privacy Policy: ## JSON Master Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/77/fb/49/77fb4949-7411-82d0-8c53-95db7fcbebef/1.png/1260x2736.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/a4/13/eb/a413ebf5-6794-ad0d-3e0e-59a277c6f28d/2.png/1260x2736.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/d5/51/bd/d551bd70-919f-da70-a6e7-d6692eb4a7bf/3.png/1260x2736.png) ## JSON Master Rating Breakdown in United States - 5 stars: 4 (80%) - 4 stars: 0 (0%) - 3 stars: 1 (20%) - 2 stars: 0 (0%) - 1 stars: 0 (0%) ## JSON Master Reviews in United States ### ***** "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. -- kychen8888, 2026-02-10 ### ***** "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! -- Wow 6423, 2026-02-09 ### ***** "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! -- Galaxy Remover, 2026-02-07 [View all JSON Master reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## JSON Master In-App Purchases | Item | Price | |------|-------| | JSON Master Pro (Weekly) | $1.99 | | JSON Master Pro Lifetime | $12.99 | ## JSON Master Available In - [United States](https://apptail.io/app/json-master-editor-viewer-SiCy/united-states) - [Japan](https://apptail.io/app/json-master-editor-viewer-SiCy/japan) - [Canada](https://apptail.io/app/json-master-editor-viewer-SiCy/canada) - [Switzerland](https://apptail.io/app/json-master-editor-viewer-SiCy/switzerland) - [Colombia](https://apptail.io/app/json-master-editor-viewer-SiCy/colombia) - [Cyprus](https://apptail.io/app/json-master-editor-viewer-SiCy/cyprus) - [Germany](https://apptail.io/app/json-master-editor-viewer-SiCy/germany) - [Egypt](https://apptail.io/app/json-master-editor-viewer-SiCy/egypt) - [Spain](https://apptail.io/app/json-master-editor-viewer-SiCy/spain) - [France](https://apptail.io/app/json-master-editor-viewer-SiCy/france) - [Grenada](https://apptail.io/app/json-master-editor-viewer-SiCy/grenada) - [Ghana](https://apptail.io/app/json-master-editor-viewer-SiCy/ghana) - [Croatia](https://apptail.io/app/json-master-editor-viewer-SiCy/croatia) - [Indonesia](https://apptail.io/app/json-master-editor-viewer-SiCy/indonesia) - [Iceland](https://apptail.io/app/json-master-editor-viewer-SiCy/iceland) - [Jordan](https://apptail.io/app/json-master-editor-viewer-SiCy/jordan) - [Kenya](https://apptail.io/app/json-master-editor-viewer-SiCy/kenya) - [South Korea](https://apptail.io/app/json-master-editor-viewer-SiCy/south-korea) - [Cayman Islands](https://apptail.io/app/json-master-editor-viewer-SiCy/cayman-islands) - [Latvia](https://apptail.io/app/json-master-editor-viewer-SiCy/latvia) - [Madagascar](https://apptail.io/app/json-master-editor-viewer-SiCy/madagascar) - [North Macedonia](https://apptail.io/app/json-master-editor-viewer-SiCy/north-macedonia) - [Mali](https://apptail.io/app/json-master-editor-viewer-SiCy/mali) - [Mauritius](https://apptail.io/app/json-master-editor-viewer-SiCy/mauritius) - [Mexico](https://apptail.io/app/json-master-editor-viewer-SiCy/mexico) - [Nigeria](https://apptail.io/app/json-master-editor-viewer-SiCy/nigeria) - [Netherlands](https://apptail.io/app/json-master-editor-viewer-SiCy/netherlands) - [Nepal](https://apptail.io/app/json-master-editor-viewer-SiCy/nepal) - [Oman](https://apptail.io/app/json-master-editor-viewer-SiCy/oman) - [Philippines](https://apptail.io/app/json-master-editor-viewer-SiCy/philippines) - [Portugal](https://apptail.io/app/json-master-editor-viewer-SiCy/portugal) - [Paraguay](https://apptail.io/app/json-master-editor-viewer-SiCy/paraguay) - [Qatar](https://apptail.io/app/json-master-editor-viewer-SiCy/qatar) - [Saudi Arabia](https://apptail.io/app/json-master-editor-viewer-SiCy/saudi-arabia) - [Slovenia](https://apptail.io/app/json-master-editor-viewer-SiCy/slovenia) - [Senegal](https://apptail.io/app/json-master-editor-viewer-SiCy/senegal) - [Suriname](https://apptail.io/app/json-master-editor-viewer-SiCy/suriname) - [Taiwan](https://apptail.io/app/json-master-editor-viewer-SiCy/taiwan) - [Uganda](https://apptail.io/app/json-master-editor-viewer-SiCy/uganda) - [Uzbekistan](https://apptail.io/app/json-master-editor-viewer-SiCy/uzbekistan) - [Azerbaijan](https://apptail.io/app/json-master-editor-viewer-SiCy/azerbaijan) - [Vietnam](https://apptail.io/app/json-master-editor-viewer-SiCy/vietnam) - [Bahrain](https://apptail.io/app/json-master-editor-viewer-SiCy/bahrain) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*