JSON Prettify vs Structly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JSON Prettify
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 formatting
- Detailed error messages for invalid JSON
- Compact mode for compressed view
- User-friendly interface
- JSON validation
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JSON Prettify is designed to make working with JSON data easier and more efficient. Whether you’re a developer debugging API responses or a data enthusiast exploring structured information, JSON Prettify provides a clean, intuitive experience for both formatting and validating JSON. • Quick and Clear Formatting: Instantly transform unreadable JSON into a clean, well-organized structure. • Detailed Error Messages: When JSON isn’t valid, JSON Prettify provides precise error messages to help you find exactly what’s wrong. • Compact Mode: Switch to a compressed view to minimize the JSON structure without losing essential information. • User-Friendly Interface: Enjoy a seamless experience designed with developers in mind. JSON Prettify is your lightweight, powerful tool for error-free, organized JSON. Get started today and streamline your JSON workflow!
Structly
This tool enhances your browsing experience by transforming raw JSON data into clear, readable views directly within Safari. It offers effortless formatting, advanced search, and versatile export options, all while prioritizing user privacy with on-device operation and no data collection.
- Effortless JSON formatting
- Syntax highlighting and collapsible sections
- Line numbers for reference
- Offline operation
- Search keys and values
- Execute JSON Path queries
- Export to JSON, YAML, or CSV
- Customizable themes
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Structly makes JSON easy to read, in its own native viewer on iPhone, iPad and Mac, and right inside Safari. A NATIVE JSON VIEWER • Open files, paste text, or pick up where you left off with recent documents • A clear tree with syntax colors, item counts and indentation guides • Table view turns lists of objects, such as API results, into sortable columns • Source view with syntax highlighting • Numbers keep their exact spelling, even huge integers and precise decimals FIND AND UNDERSTAND • Search keys and values with highlighted matches, or show only the matches • Jump straight to a path such as $.users[0].name • The inspector shows readable dates for Unix timestamps and ISO 8601 dates, decodes URL and Base64 strings, and opens links • Copy a value, key or JSON path with one tap EXPORT YOUR WAY • 2 or 4 spaces, tabs or minified, with optional sorted keys • Save to Files or copy to the clipboard IN SAFARI • Formats JSON pages automatically, with search, JSON Path queries and themes • Export to JSON, YAML or CSV • Send any JSON page to the Structly app with one tap SHARE SHEET • "View in Structly" opens JSON from Files, Mail and other apps right in the share sheet PRIVATE BY DESIGN • No account, no ads, no tracking and no data collection • Everything happens on your device. Recent documents never leave it, and you can turn them off Built for developers, API testers and anyone who works with JSON.
Screenshots
Verdict
The clearest difference is ads: Structly at none against JSON Prettify's shown. Structly also leads on monetization model (free vs ad-supported). JSON Prettify's advantage is update cadence (every 5 days vs every 2 months). On price, rating, review sentiment and ratings volume there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for JSON Prettify against 5.0 for Structly. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
JSON Prettify ships an update every 5 days, Structly every 2 months. The most recent releases landed on September 29, 2026 and October 5, 2026 respectively.
| Parameter | JSON Prettify | Structly |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (3 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 3 — better |
| Update frequency | Every 5 days — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.6 — better | 17.6 |
| Further details — not scored | ||
| Size | 6 MB | 8 MB |
| Age rating | +4 | 4+ |
| Developer | Jean-Philippe DESCAMPS | Chen He |
Customer experience
JSON Prettify
Structly
In-app purchases
JSON Prettify
No in-app purchases
Structly
No in-app purchases









