1. Home
  2. Topics
  3. Jsonconvertertools

Best Jsonconvertertools Apps

193+ iOS apps curated and reviewed

4.0 avg rating
20 free apps
Updated May 2026

Out of 193+ jsonconvertertools apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Jsonconvertertools Apps (May 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1JaysonJaysonFree4.5★ (378)NoYesJul 2026
2Unit Converter - Best Unit AppUnit Converter - Best Unit AppFree4.8★ (172K)YesYesJul 2026
3HTTPBot: API & HTTP ClientHTTPBot: API & HTTP ClientFree4.5★ (1.3K)NoYesJul 2026
4myConvert LitemyConvert LiteFree4.0★ (4)YesNoJul 2026
5JSON DesignerJSON DesignerFree3.3★ (10)NoYesMay 2026
6Json Viewer-View and Edit JsonJson Viewer-View and Edit JsonFree4.5★ (46)YesNoJul 2026
7JSON FORMATTER PROJSON FORMATTER PROFree was $2.994.9★ (55)NoNoMay 2026
8Converter: Units & CurrenciesConverter: Units & CurrenciesFree4.8★ (761)NoNoJul 2026

Top Picks for Jsonconvertertools

Jayson#1

Jayson by Simon B. Støvring

JSON viewer and editor
Editor's Choice
🛠️ Developer Tools
4.5😊(378 ratings)
FreeIn-App Purchases
#81in Developer Tools
Jayson screenshot 1
Jayson screenshot 2
Jayson screenshot 3
Jayson screenshot 4
Jayson screenshot 5

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
Unit Converter - Best Unit App#2

Unit Converter - Best Unit App by Alan Mrvica

Convert All Units and Currency
Strong Contender
✈️ Travel
4.8😊(172K ratings)
FreeAdsIn-App Purchases
Unit Converter - Best Unit App screenshot 1
Unit Converter - Best Unit App screenshot 2
Unit Converter - Best Unit App screenshot 3
Unit Converter - Best Unit App screenshot 4
Unit Converter - Best Unit App screenshot 5
Unit Converter - Best Unit App screenshot 6

Easily convert between a wide range of units across 20 categories, including length, weight, temperature, and more. Features live currency updates for 155 world currencies, refreshed daily. Designed for simplicity and visual appeal.

What We Love

  • 🚀 Easy to use
  • 👍 Comprehensive conversions
  • 💡 Useful for travel and cooking
  • 🚀 Quick and efficient

Room to Improve

  • 🐛 Limited character input
  • 🐛 Difficulty with negative numbers
  • 💡 Lack of ability to quickly switch between conversions
HTTPBot: API & HTTP Client#3

HTTPBot: API & HTTP Client by Arvindh Sukumar

Make Requests, Debug APIs
Worth Considering
🛠️ Developer Tools
4.5😐(1.3K ratings)
FreeIn-App Purchases
#47in Developer Tools
HTTPBot: API & HTTP Client screenshot 1
HTTPBot: API & HTTP Client screenshot 2
HTTPBot: API & HTTP Client screenshot 3
HTTPBot: API & HTTP Client screenshot 4
HTTPBot: API & HTTP Client screenshot 5
HTTPBot: API & HTTP Client screenshot 6

This app allows users to send HTTP/HTTPS requests and connect to WebSockets, making it easy to debug APIs on the go. It supports various response formats, collaboration features, and authentication methods, streamlining API development and testing.

What We Love

  • 🚀 Intuitive interface
  • 👍 Postman integration
  • 🚀 Powerful HTTP client
  • 👍 Great tool for API testing

Room to Improve

  • 🐛 Crashes and bugs
  • 🔒 Lacks security features (e.g., client certificates)
  • 💰 Expensive for the limited free version

More Jsonconvertertools apps to explore

4
myConvert Lite
myConvert Lite
myConvert Lite
Currency and units converter
Free

Convert currencies and units quickly and efficiently on a single screen. This free version offers essential conversion tools with a built-in calculator and natural language search. Upgrade to the full version for expanded unit options and an ad-free experience.

Multiple results displayed simultaneouslyIntegrated calculator keyboardHandles complex unit conversions
🔍 Reference
(4)
free with in-app purchases
5
JSON Designer
JSON Designer
JSON Designer
Modeling better Documentation
Free

Visually model and design JSON structures with this intuitive tool. Generate code from your models and export diagrams for documentation. Ideal for developers who want to understand and represent APIs more effectively.

Graphically model JSON structuresExport JSON models as imagesReverse-generate models from JSON
📊 Productivity
(10)
free with in-app purchases
6
Json Viewer-View and Edit Json
Json Viewer-View and Edit Json
Json Viewer-View and Edit Json
View and edit JSON
Free

This tool offers a professional way to view and edit JSON data. It features real-time syntax highlighting, intelligent formatting, and data validation, with easy file management and sharing.

Real-time syntax highlightingIntelligent formattingPrecise data validation
🔧 Utilities
(46)
ad-supported
7
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
8
Converter: Units & Currencies
Converter: Units & Currencies
Converter: Units & Currencies
by DROXIC OOD
Free

This app offers a comprehensive solution for converting various units and currencies. With over 25 categories and 150 currencies supported, it caters to a wide range of conversion needs. It is designed for Apple devices and supports 24 languages.

25+ Categories450+ Units150+ Currencies
🔧 Utilities
(761)
free
9
JSON Formatter
JSON Formatter
JSON Formatter
Pretty Print JSON
Free

This utility helps you format and view JSON strings with clear, readable indentation. It offers both light and dark themes for a comfortable viewing experience.

Pretty print JSONReadable indentationLight mode
📊 Productivity
(4)
free
10
JSON Viewer & Editor
JSON Viewer & Editor
JSON Viewer & Editor
Format, Validate & Convert
Free

This app provides a fast, offline JSON toolkit for developers and data-focused users. It allows you to view, edit, validate, and format JSON files with features like syntax highlighting, tree view, and format conversion.

Syntax highlighting code editorCollapsible tree viewOffline validation and formatting
🛠️ Developer Tools
(2)
free
11
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
12
Simple JSON Reader
Simple JSON Reader
Simple JSON Reader
Simple, convenient JSON Reader
Free

Easily view and understand information from JSON files and web pages. This utility simplifies data presentation, making complex data accessible in a convenient format for various projects and partners.

View JSON filesView JSON from web pagesConvenient data format
🔧 Utilities
(1)
free
13
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
(6)
free with in-app purchases
14
Learn to Code – Tinkerstellar
Learn to Code – Tinkerstellar
Learn to Code – Tinkerstellar
Interactive Coding Tutorials
Free

Learn to code with interactive, hands-on Python labs that run directly on your device. Practice with real code, data, and APIs without needing internet or setup. Progress from basics to advanced topics like data analysis and machine learning at your own pace.

Interactive coding labsOn-device Python IDEOffline learning
📚 Education
(577)
free with in-app purchases
15
JSON Tools: XLSX CSV to JSON
JSON Tools: XLSX CSV to JSON
JSON Tools: XLSX CSV to JSON
Convert XLSX CSV & XML to JSON
Free

This app transforms data between various formats like XLSX, CSV, XML, and JSON. It offers conversion, validation, viewing, and optimization tools for efficient data management.

XLSX to JSON conversionCSV to JSON conversionXML to JSON conversion
📊 Productivity
(9)
ad-supported
16
JSON Tools - View Edit
JSON Tools - View Edit
JSON Tools - View Edit
View • Edit • Compare
Free

This app provides developers with tools to view, edit, and compare JSON data. It offers hierarchical tree views, raw text editing with syntax highlighting, advanced search capabilities including JSONPath, and file operations for local and remote JSON files.

Hierarchical tree view with expandable nodesRaw text editor with syntax highlightingAdvanced search with JSONPath support
🛠️ Developer Tools
(0)
free with in-app purchases
17
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
18
Rest – HTTP API Client
Rest – HTTP API Client
Rest – HTTP API Client
Perform HTTP Requests
Free

Easily perform HTTP requests directly from your mobile device. Supports various body types, syntax highlighting, and detailed response inspection. Import collections and manage project variables for efficient API testing.

Supports JSON, Form & Multipart bodiesSyntax highlighting and JSON error reportingAll common and custom HTTP methods
🛠️ Developer Tools
(88)
free with in-app purchases
19
JSON Viewer ‎
JSON Viewer ‎
JSON Viewer ‎
View and edit JSON
Free

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.

Fast code accessIntuitive navigationCopy, paste, undo, redo
🔧 Utilities
(1)
free
20
Chameleon ToolKit
Chameleon ToolKit
Chameleon ToolKit
Elegant Convert ToolKits
Free

This utility app offers a comprehensive suite of tools for working with various data formats including JSON, CSV, SQL, and XML. It provides features for formatting, minifying, sorting, and encoding/decoding data, along with hashing and JWT decoding capabilities. The app supports both light and dark modes for a customizable user experience.

Pretty print JSON, SQL, CSS, XMLConvert CSV to JSONMinify and compress JSON
🔧 Utilities
(3)
free

FAQ about Jsonconvertertools

What are the best jsonconvertertools apps for iPhone?
Jayson tops our jsonconvertertools apps ranking as of May 2026, with a 4.5-star average from 378 App Store ratings, and it's free to download.
Yes — 20 of the top jsonconvertertools apps we rank are free to download, including Jayson and Unit Converter - Best Unit App.
Jayson has no ads and offers in-app purchases, according to its App Store listing as of May 2026.
We track 193+ jsonconvertertools apps on the iOS App Store as of May 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.