# KULDIG Preview vs JSON Tools

The clearest difference is in-app purchases: KULDIG Preview at none against JSON Tools's 1. KULDIG Preview also leads on ads (none vs shown). JSON Tools's advantage is update cadence (fortnightly vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. JSON Tools sells 1 one-off in-app purchase. KULDIG Preview asks for nothing beyond the download.

KULDIG Preview ships an update every 2 months, JSON Tools fortnightly. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | KULDIG Preview | JSON Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/json-tools-view-edit/id6756753329/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 51 MB | 30 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KULDIG](https://appshunter.io/developer/1315396634) | [OKAN KAYCI](https://appshunter.io/developer/1807380236) |

## What reviewers say

### KULDIG Preview

[App page](https://appshunter.io/ios/app/kuldig-preview-app/id1557457576)

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

**In-app purchases:** none


### JSON Tools

[App page](https://appshunter.io/ios/app/json-tools-view-edit/id6756753329)

This app provides developers with tools to view, edit, and compare JSON data. It offers hierarchical tree views, raw text editing with syntax highlighting, advanced search capabilities including JSONPath, and file operations for local and remote JSON files.

**Highlights:** Hierarchical tree view with expandable nodes, Raw text editor with syntax highlighting, Advanced search with JSONPath support, Visual JSON file comparison, Open JSON from device or URL, Save and copy JSON content

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JSON Tools Premium | $4.99 | one-time |


## Frequently asked questions

### Is KULDIG Preview free?

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

### Is JSON Tools free?

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

### Do KULDIG Preview or JSON Tools have ads?

JSON Tools shows ads; KULDIG Preview does not.

### Which is updated more often, KULDIG Preview or JSON Tools?

KULDIG Preview ships an update every 2 months, and JSON Tools fortnightly. Most recently, KULDIG Preview was updated on October 8, 2026 and JSON Tools on October 13, 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.*