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Best Json Apps

250+ iOS apps curated and reviewed

4.0 avg rating
18 free apps
Updated August 2026

The best json apps on iPhone average 4.0★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.

Compare top Json Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1JaysonJaysonFree4.5★ (398)NoYesAug 2026
2Json Viewer-View and Edit JsonJson Viewer-View and Edit JsonFree4.5★ (46)YesNoAug 2026
3JSON Viewer ‎JSON Viewer ‎Free1.0★ (1)NoNoAug 2026
4Koder Code EditorKoder Code EditorFree4.6★ (12K)NoNoAug 2026
5JSON UtilitiesJSON UtilitiesFree—NoNoJul 2026
6Json Genie: JSON Editor/ViewerJson Genie: JSON Editor/ViewerFree4.3★ (3)YesYesAug 2026
7Json Viewer SimpleJson Viewer SimpleFree5.0★ (1)YesNoJun 2026
8JSON Editor MobileJSON Editor MobileFree3.9★ (11)NoYesAug 2026

Top Picks for Json

Jayson#1

Jayson by Simon B. Støvring

JSON editor with Shortcuts
Editor's Choice
🛠️ Developer Tools
4.5😊(398 ratings)
FreeIn-App Purchases
#85in Developer Tools
Jayson screenshot 1
Jayson screenshot 2
Jayson screenshot 3
Jayson screenshot 4
Jayson screenshot 5
Jayson screenshot 6

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.

What We Love

  • 👍 Elegant and intuitive JSON editing interface
  • 🎯 Perfect for FNF mod development and updates
  • 📱 Excellent iOS implementation with native feel
  • 🔧 Powerful JSON manipulation capabilities

Room to Improve

  • 🐛 Frequent crashes and instability issues
  • 🔋 High battery consumption and device heating
  • ❌ Missing search functionality
JSON Viewer ‎#3

JSON Viewer ‎ by Hrishi Suthar

View and edit JSON
Worth Considering
🔧 Utilities
1.0(2 ratings)
Free
JSON Viewer ‎ screenshot 1
JSON Viewer ‎ screenshot 2
JSON Viewer ‎ screenshot 3
JSON Viewer ‎ screenshot 4

Easily view and edit JSON content with this utility app. It offers fast code access, intuitive navigation, and essential editing tools. Extract JSON data from images and customize text size for a personalized experience.

More Json apps to explore

4
Koder Code Editor
Koder Code Editor
Koder Code Editor
(S)FTP, Dropbox, Webdav, SSH
Free

A powerful code editor for mobile devices, offering syntax highlighting for over 80 languages, remote file access, and a built-in terminal. Perfect for developers who need to code on the go with a well-designed interface.

Syntax highlighting for 80+ languagesRemote file access (SFTP, Dropbox, WebDAV)Built-in SSH client
🛠️ Developer Tools
(12K)
paid
5
JSON Utilities
JSON Utilities
JSON Utilities
Easy Tools to Manipulate JSON
Free

This minimalist editor transforms complex JSON into readable code with a distraction-free interface. It offers real-time validation, one-click formatting, and effortless string manipulation, working completely offline across multiple Apple platforms.

Minimalist interfaceOffline functionalityReal-time JSON validation
🛠️ Developer Tools
(0)
free
6
Json Genie: JSON Editor/Viewer
Json Genie: JSON Editor/Viewer
Json Genie: JSON Editor/Viewer
View, Edit & Format JSON Files
Free

This app provides a fast and private way to view, edit, compare, and merge JSON files directly on your device. It offers a clear tree structure for browsing, powerful search capabilities, and formatting options without needing an account or cloud upload.

View JSON in a tree structureEdit JSON data safelyCompare JSON files
🛠️ Developer Tools
(3)
free with in-app purchases
7
Json Viewer Simple
Json Viewer Simple
Json Viewer Simple
Json Reader
Free

Easily view and navigate JSON files with features like search, pagination, and large file support. Its intuitive interface is designed for all user levels to enhance productivity when working with JSON data.

Search functionalityPagination for organized viewingSupport for large JSON files
🛠️ Developer Tools
(1)
ad-supported
8
JSON Editor Mobile
JSON Editor Mobile
JSON Editor Mobile
by VDT LABS S.R.L.
Free

This application allows users to create, visualize, modify, and validate JSON data. It offers both outline and text modes for editing, with features like syntax coloring, auto-indentation, and find/replace functionality. Premium features, including saving documents, are available via a one-time in-app purchase.

View and edit JSON in outline or text modesError-proof manipulation in outline modeSyntax coloring and auto-indentation in text mode
🛠️ Developer Tools
(11)
free with in-app purchases
9
JSON Editor Viewer XML PDF
JSON Editor Viewer XML PDF
JSON Editor Viewer XML PDF
JSON File Editor And Reader
Free

This app allows users to view, edit, and manage JSON, XML, and PDF files in a single platform. It offers features like syntax highlighting, file management, and search capabilities for efficient data manipulation and document review.

Multi-format compatibility (JSON, XML, PDF)Intuitive JSON editingXML data management
🔧 Utilities
(2)
free
10
JSON Pilot: Viewer & Editor
JSON Pilot: Viewer & Editor
JSON Pilot: Viewer & Editor
AI · Format · Diff · JSONPath
Free
🛠️ Developer Tools
(0)
11
Curly: JSON Viewer & Formatter
Curly: JSON Viewer & Formatter
Curly: JSON Viewer & Formatter
JSON Viewer browser extension
Free

This browser extension automatically formats and highlights raw JSON text on webpages, making it instantly readable and interactive. It's designed to boost productivity for developers by simplifying data inspection and API debugging.

Automatic JSON detectionSyntax highlightingInteractive JSON view
🛠️ Developer Tools
(1)
ad-supported
12
Smart JSON & XML Editor
Smart JSON & XML Editor
Smart JSON & XML Editor
Viewer, Formatierer & Tools
Free

This app provides developers, testers, and data analysts with a comprehensive mobile toolkit for working with structured data. It offers multiple editing modes, formatting, conversion between JSON and XML, and powerful data manipulation tools for efficient data management on the go.

Multiple editing modes (Tree, Source, List)Syntax highlightingOne-tap format and minify
🛠️ Developer Tools
(0)
free
13
Files - File Manager & Browser
Files - File Manager & Browser
Files - File Manager & Browser
Save Files for Offline Viewing
Free

This app provides a web browser to save documents for offline viewing on your device. It includes a robust file manager with viewers for various document types, a photo browser, PDF reader, and Dropbox integration.

Web browser for offline viewingBuilt-in file managerAdvanced PDF reader
📊 Productivity
(12K)
free with in-app purchases
14
JSON Prettify
JSON Prettify
JSON Prettify
Validez et formatez votre JSON
Free

Easily format and validate JSON data with a clean, intuitive interface. Get clear error messages for invalid JSON and switch to a compact view for efficient data exploration. Streamline your JSON workflow with this developer-friendly tool.

Quick and clear JSON formattingDetailed error messages for invalid JSONCompact mode for compressed view
🛠️ Developer Tools
(2)
ad-supported
15
JSON FORMATTER PRO
JSON FORMATTER PRO
JSON FORMATTER PRO
Syntax Error Highlighting
Free
$2.99 | 100% OFF

This utility app simplifies JSON formatting and validation. It offers syntax error highlighting and allows users to type or paste JSON data for easy manipulation and export. Ideal for developers and anyone working with JSON on the go.

Syntax Error HighlightingJSON FormattingType JSON
🔧 Utilities
(55)
free
16
Jeyso: JSON Diff & Formatter
Jeyso: JSON Diff & Formatter
Jeyso: JSON Diff & Formatter
Master Your Data Structure
Free
🛠️ Developer Tools
(0)
17
Power JSON Editor Mobile
Power JSON Editor Mobile
Power JSON Editor Mobile
A must have JSON tool for dev
Free

This app provides a robust JSON editing experience for developers on iOS devices. It allows for easy viewing, exploring, and validating JSON files through a document browser interface and offers both tree and text views with syntax highlighting.

Document browser for file managementTree view for JSON hierarchyText view with syntax highlighting
🛠️ Developer Tools
(10)
free with in-app purchases
18
Scriptable
Scriptable
Scriptable
Automation using JavaScript
Free

Automate tasks on your device by writing custom scripts in JavaScript. Integrate with native iOS features like files, calendars, and reminders. Create personalized widgets for your Home Screen and interact with Siri.

Write and run JavaScriptCreate custom widgetsSiri Shortcuts integration
🛠️ Developer Tools
(3.8K)
free with in-app purchases
19
Learn JSON | JSON Tutor
Learn JSON | JSON Tutor
Learn JSON | JSON Tutor
Learn JSON Tutorials guide
$1.99
📚 Education
(0)
20
JSON Viewer(Pro)
JSON Viewer(Pro)
JSON Viewer(Pro)
View and edit JSON without ads
$2.99
🔧 Utilities
(0)

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FAQ about Json

What are the best json apps for iPhone?
Jayson tops our json apps ranking as of August 2026, with a 4.5-star average from 398 App Store ratings, and it's free to download.
Yes — 18 of the top json apps we rank are free to download, including Jayson and Json Viewer-View and Edit Json.
Jayson has no ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 250+ json apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Jayson is a mobile application designed for viewing and editing JSON files. It provides a user-friendly interface to browse, parse, and manage JSON data directly on your device, supporting various viewing modes and comparison tools.
Key features include browsing JSON files, toggling between table and syntax-highlighted text views, a tabbed interface for easy navigation, split-screen functionality for document comparison, and integration with Siri Shortcuts and Share Sheet Actions for efficient JSON parsing.

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