Comparison

JSON Prettify vs Structly

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Quick and clear JSON formatting
  • Detailed error messages for invalid JSON
  • Compact mode for compressed view
  • User-friendly interface
  • JSON validation
Features
Read full description

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!

About

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.

Highlights
  • 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
Features
Read full description

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

JSON Prettify3 screens
Structly4 screens

Verdict

The call

The clearest difference is in-app purchases: JSON Prettify at none against Structly's 3. JSON Prettify also leads on rating (5.0 vs 4.8) and update cadence (every 5 days vs fortnightly). Structly's advantage is ads (none vs shown). On price, review sentiment, ratings volume and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Structly sells 3 one-off in-app purchases. JSON Prettify asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

JSON Prettify holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

JSON Prettify ships an update every 5 days, Structly fortnightly. The most recent releases landed on October 17, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
JSON Prettify versus Structly: the parameters behind the verdict, then further details
ParameterJSON PrettifyStructly
PriceFreeFree
Rating5.0 (2 ratings) — better4.8 (4 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings24 — better
Update frequencyEvery 5 days — betterFortnightly
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supportedFree — better
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.6 — better17.6
Further details — not scored
Size6 MB10 MB
Age rating4+4+
DeveloperJean-Philippe DESCAMPSChen He

Customer experience

JSON Prettify

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Structly

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

JSON Prettify

No in-app purchases

3 purchases

Structly

One-time3
  • Small Tip$0.99
  • Medium Tip$2.99
  • Large Tip$4.99

Questions

Is JSON Prettify free?
JSON Prettify is free to download, with no in-app purchases.
Is Structly free?
Structly is free to download, with in-app purchases available.
Which has better reviews, JSON Prettify or Structly?
JSON Prettify is rated higher. JSON Prettify averages 5.0 out of 5 from 2 ratings, while Structly averages 4.8 from 4 ratings.
Do JSON Prettify or Structly have ads?
JSON Prettify shows ads; Structly does not.
Which is updated more often, JSON Prettify or Structly?
JSON Prettify ships an update every 5 days, and Structly fortnightly. Most recently, JSON Prettify was updated on October 17, 2026 and Structly on October 25, 2026.

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