# JSONDoc vs HeaderX

The clearest difference is in-app purchases: HeaderX at none against JSONDoc's 3. HeaderX also leads on update cadence (every 8 days vs every 3 weeks) and iOS requirement (15.0 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. JSONDoc sells 3 in-app purchases, starting at $2.99 per month. HeaderX asks for nothing beyond the download.

JSONDoc ships an update every 3 weeks, HeaderX every 8 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | JSONDoc | HeaderX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/jsondoc/id6462685403/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 1 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad, Mac | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Rahul Katariya](https://appshunter.io/developer/1680332229) | [Gyuman Kim](https://appshunter.io/developer/1120436841) |

## What reviewers say

### JSONDoc

[App page](https://appshunter.io/ios/app/jsondoc/id6462685403)

This app transforms complex JSON models into visual diagrams for easier understanding and communication. It ensures all your data remains on your device for complete privacy and security.

**Highlights:** Transforms JSON models into visual diagrams, Enhances readability of complex data, Keeps all JSON documents on your computer, Easy-to-use interface, Secure data handling

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $12.99 | per year |
| Lifetime | $19.99 | one-time |


### HeaderX

[App page](https://appshunter.io/ios/app/headerx/id6790552565)

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

**In-app purchases:** none


## Frequently asked questions

### Is JSONDoc free?

JSONDoc is free to download, with in-app purchases available.

### Is HeaderX free?

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

### Do JSONDoc or HeaderX have ads?

Neither JSONDoc nor HeaderX shows ads.

### Which is updated more often, JSONDoc or HeaderX?

JSONDoc ships an update every 3 weeks, and HeaderX every 8 days. Most recently, JSONDoc was updated on November 3, 2026 and HeaderX on November 5, 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.*