# JSON Prettify vs Curly

The clearest difference is update cadence: JSON Prettify at every 5 days against Curly's monthly. On price, rating, review sentiment and ratings volume there is nothing between them.

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 Curly. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

JSON Prettify ships an update every 5 days, Curly monthly. The most recent releases landed on September 10, 2026 and August 20, 2026 respectively.

## The numbers

| Metric | JSON Prettify | Curly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/json-prettify/id6737413797/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/curly-json-viewer-and-formatter/id6756542155/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Monthly |
| Monetization | Ad-supported | Ad-supported |
| Size | 6 MB | 8 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | +4 | 17+ |
| Developer | [Jean-Philippe DESCAMPS](https://appshunter.io/developer/334555645) | [DropletApps](https://appshunter.io/developer/1710267424) |

## What reviewers say

### JSON Prettify

[App page](https://appshunter.io/ios/app/json-prettify/id6737413797)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Curly

[App page](https://appshunter.io/ios/app/curly-json-viewer-and-formatter/id6756542155)

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.

**Highlights:** Automatic JSON detection, Syntax highlighting, Interactive JSON view, Lightweight browser extension, Boosts developer productivity

**Features:** macOS Compatibility, Safari Extension, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is JSON Prettify free?

JSON Prettify is free to download, with no in-app purchases.

### Is Curly free?

Curly is free to download, with no in-app purchases.

### Which has better reviews, JSON Prettify or Curly?

JSON Prettify and Curly are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do JSON Prettify or Curly have ads?

Both JSON Prettify and Curly show ads.

### Which is updated more often, JSON Prettify or Curly?

JSON Prettify ships an update every 5 days, and Curly monthly. Most recently, JSON Prettify was updated on September 10, 2026 and Curly on August 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*