# Jeyso vs JSON Viewer

The clearest difference is update cadence: Jeyso at monthly against JSON Viewer's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Jeyso ships an update monthly, JSON Viewer every 4 months. The most recent releases landed on September 26, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Jeyso | JSON Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Size | 5 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Umit UZ](https://appshunter.io/developer/1842858860) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## What reviewers say

### Jeyso

[App page](https://appshunter.io/ios/app/jeyso-json-diff-and-formatter/id6758353863)

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

**In-app purchases:** none


### JSON Viewer

[App page](https://appshunter.io/ios/app/json-viewer-formatter-tree/id6772258771)

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

**In-app purchases:** none


## Frequently asked questions

### Is Jeyso free?

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

### Is JSON Viewer free?

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

### Do Jeyso or JSON Viewer have ads?

Neither Jeyso nor JSON Viewer shows ads.

### Which is updated more often, Jeyso or JSON Viewer?

Jeyso ships an update monthly, and JSON Viewer every 4 months. Most recently, Jeyso was updated on September 26, 2026 and JSON Viewer on September 21, 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.*