# JSON Prettify vs Upper

The clearest difference is price: JSON Prettify at Free against Upper's $2.99. JSON Prettify also leads on update cadence (every 5 days vs every 2 months) and iOS requirement (16.6 vs 18.2). Upper's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

JSON Prettify is free to download; Upper costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

JSON Prettify ships an update every 5 days, Upper every 2 months. The most recent releases landed on October 9, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | JSON Prettify | Upper |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/json-prettify/id6737413797/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 6 MB | 17 MB |
| Requires iOS | **16.6** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jean-Philippe DESCAMPS](https://appshunter.io/developer/334555645) | [Paul Haedrich](https://appshunter.io/developer/1809241718) |

## 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


### Upper

[App page](https://appshunter.io/ios/app/upper-s3-shortcuts/id6744768039)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JSON Prettify free?

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

### Is Upper free?

Upper costs $2.99, with no in-app purchases.

### Do JSON Prettify or Upper have ads?

JSON Prettify shows ads; Upper does not.

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

JSON Prettify ships an update every 5 days, and Upper every 2 months. Most recently, JSON Prettify was updated on October 9, 2026 and Upper on September 30, 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.*