# JSON Master vs Engram Artificial

The clearest difference is in-app purchases: Engram Artificial at none against JSON Master's 3. Engram Artificial also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. JSON Master sells 3 in-app purchases, starting at $2.99 per 7 days. Engram Artificial asks for nothing beyond the download.

JSON Master ships an update every 9 days, Engram Artificial every 5 days. The most recent releases landed on October 3, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | JSON Master | Engram Artificial |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/json-master-editor-and-viewer/id6757484875/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 73 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Tianjin Illuso Information Technology Co., Ltd.](https://appshunter.io/developer/1864792206) | [Jonathan Wallace](https://appshunter.io/developer/1805506098) |

## What reviewers say

### JSON Master

[App page](https://appshunter.io/ios/app/json-master-editor-and-viewer/id6757484875)

This offline iOS tool formats, views, validates, and converts JSON data. It supports large files and offers privacy-safe, local processing for developers needing to debug API responses or transform data formats.

**Highlights:** Offline JSON formatting and beautifying, Tree and text view for JSON visualization, Instant JSON syntax validation, JSON to CSV, XML, Excel conversion, Large file support, Import from clipboard and files

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JSON Master Pro (Weekly) | $2.99 | per 7 days |
| Pro (Yearly) | $14.99 | per year |
| JSON Master Pro Lifetime | $17.99 | one-time |


### Engram Artificial

[App page](https://appshunter.io/ios/app/engram-artificial/id6757760213)

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

**In-app purchases:** none


## Frequently asked questions

### Is JSON Master free?

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

### Is Engram Artificial free?

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

### Do JSON Master or Engram Artificial have ads?

JSON Master shows ads; Engram Artificial does not.

### Which is updated more often, JSON Master or Engram Artificial?

JSON Master ships an update every 9 days, and Engram Artificial every 5 days. Most recently, JSON Master was updated on October 3, 2026 and Engram Artificial on September 29, 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.*