# JSONDoc vs Diff Checker

The clearest difference is update cadence: JSONDoc at every 3 weeks against Diff Checker's every 2 months. JSONDoc also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. JSONDoc sells 3 in-app purchases, starting at $3.99 per month and Diff Checker sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

JSONDoc ships an update every 3 weeks, Diff Checker every 2 months. The most recent releases landed on September 12, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | JSONDoc | Diff Checker |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 5 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Rahul Katariya](https://appshunter.io/developer/1680332229) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## 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 | $3.99 | per month |
| Yearly | $19.99 | per year |
| Lifetime | $29.99 | one-time |


### Diff Checker

[App page](https://appshunter.io/ios/app/diff-checker-text-compare/id6772266827)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Yearly | $14.99 | per year |


## Frequently asked questions

### Is JSONDoc free?

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

### Is Diff Checker free?

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

### Do JSONDoc or Diff Checker have ads?

Neither JSONDoc nor Diff Checker shows ads.

### Which is updated more often, JSONDoc or Diff Checker?

JSONDoc ships an update every 3 weeks, and Diff Checker every 2 months. Most recently, JSONDoc was updated on September 12, 2026 and Diff Checker on September 8, 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.*