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.






236+ iOS apps curated and reviewed
Every iPhone needs a few good json pro free apps. We benchmark 236+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free was $2.99 | 4.9★ (55) | No | No | May 2026 | |
| 2 | Free | 4.6★ (54K) | Yes | Yes | Jul 2026 | |
| 3 | Free | — | Yes | Yes | Jul 2026 | |
| 4 | Free | 2.0★ (1) | No | No | May 2026 | |
| 5 | Free | 4.5★ (1.3K) | No | Yes | Jul 2026 | |
| 6 | Free | 4.3★ (6) | No | Yes | Jul 2026 | |
| 7 | Free | 5.0★ (2) | No | No | Jul 2026 | |
| 8 | Free | 3.5★ (4) | No | No | May 2026 |






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.






This app is a powerful tool for extracting and compressing various archive file formats. It supports creating encrypted ZIP files, batch compression of media, and offers multiple file transfer options. It also allows viewing and playing a wide range of document, video, and audio types.






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.


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.


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.


This app allows developers to import, view, and edit JSON files with syntax highlighting. It offers tree view for clear visualization and supports importing from files or HTTP requests.


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.


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.


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.


This tool automatically formats and navigates JSON data directly within Safari. It offers smart detection, theme switching, and keyboard shortcuts for efficient data exploration. An optional Pro upgrade unlocks advanced features like lightning-fast search and custom expansion.


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.


Create a personalized dashboard to visualize any data you choose. Monitor key metrics like sales, weather, or room temperature with this versatile tool.




This app provides free language translation and dictionary services for 59 languages. It features translation history, the ability to request new languages, and user feedback for improved accuracy. Translations can be sent via email and viewed in a zoomable format for easy communication.


This utility app quickly scans and decodes a wide variety of barcode and QR code formats. It provides instant lookup of useful information after each scan, making it a convenient tool for accessing data from product codes.


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.




This Safari extension automatically formats raw JSON data encountered on webpages into a readable, syntax-highlighted display. It offers interactive features like collapsible sections and one-tap actions for easy data manipulation and analysis.



