# Matrix controller vs J

The clearest difference is review sentiment: J at 50% against Matrix controller's 0%. J also leads on update cadence (fortnightly vs every 6 weeks). Matrix controller's advantage is iOS requirement (10.0 vs 13.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Matrix controller ships an update every 6 weeks, J fortnightly. Both last shipped on June 1, 2026.

## The numbers

| Metric | Matrix controller | J |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.6 (5 ratings)](https://appshunter.io/ios/app/j-tech-digital-control/id1572720298/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free | Free |
| Size | 59 MB | 59 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Lenkeng Technology Co., Ltd.](https://appshunter.io/developer/1187822502) | [J-Tech Digital, Inc](https://appshunter.io/developer/1147761166) |

## What reviewers say

### Matrix controller

[App page](https://appshunter.io/ios/app/matrix-controller/id1187822503)

Control extended matrices with this application. It supports HDbitT technology for high-definition video and audio distribution up to 1080p@60Hz. Ideal for digital signage, control rooms, and entertainment centers.

**Highlights:** Extended matrix control, HDbitT technology support, 1080p@60Hz resolution, Point-to-point connection, Up to 120 meters distance

**Features:** macOS Compatibility

**In-app purchases:** none


### J

[App page](https://appshunter.io/ios/app/j-tech-digital-control/id1572720298)

Easily manage and configure compatible J-Tech Digital A/V equipment directly from your mobile device. Control routing settings, save configurations, and connect devices without needing a physical keyboard or mouse.

**Highlights:** Control routing settings, Manage multiple devices, Remember device settings, Save/Load routing settings, Configure A/V equipment, Connect devices remotely

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Matrix controller free?

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

### Is J free?

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

### Do Matrix controller or J have ads?

Neither Matrix controller nor J shows ads.

### Which is updated more often, Matrix controller or J?

Matrix controller ships an update every 6 weeks, and J fortnightly. Most recently, Matrix controller was updated on June 1, 2026 and J on June 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*