# Preview App vs JSON Navigator

The clearest difference is update cadence: JSON Navigator at every 2 weeks against Preview App's every 13 months. JSON Navigator also leads on chart position (#17 vs unranked) and price ($0.99 vs $1.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Preview App costs $1.99 and JSON Navigator $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Preview App ships an update every 13 months, JSON Navigator every 2 weeks. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Preview App | JSON Navigator |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/json-navigator/id6740144978/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 2 weeks** |
| Monetization | — | Paid |
| Best chart rank | — | **#17** |
| Size | 8 MB | 1 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Cangmu Technology Co., Ltd](https://appshunter.io/developer/1736424342) | [Chase Higgins](https://appshunter.io/developer/1788526218) |

## What reviewers say

### Preview App

[App page](https://appshunter.io/ios/app/preview-app-store-simulator/id1626025800)

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

**In-app purchases:** none


### JSON Navigator

[App page](https://appshunter.io/ios/app/json-navigator/id6740144978)

**Currently charting:** #17 Top Paid · Developer Tools (US App Store)

This app transforms JSON data into interactive, visualized trees directly within Safari. It offers instant visualization, data type indicators, and easy navigation through complex structures. Customize your viewing experience with light and dark themes.

**Highlights:** Instant JSON visualization, Interactive tree-view interface, Data type indicators, Expand/collapse nodes, Customizable light/dark themes

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

**In-app purchases:** none


## Frequently asked questions

### Is Preview App free?

Preview App costs $1.99, with no in-app purchases.

### Is JSON Navigator free?

JSON Navigator costs $0.99, with no in-app purchases.

### Do Preview App or JSON Navigator have ads?

Neither Preview App nor JSON Navigator shows ads.

### Which is updated more often, Preview App or JSON Navigator?

Preview App ships an update every 13 months, and JSON Navigator every 2 weeks. Most recently, Preview App was updated on September 21, 2026 and JSON Navigator on September 14, 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.*