# VIPER vs FOURKAY Modular Matrix Control

The clearest difference is update cadence: FOURKAY Modular Matrix Control at daily against VIPER's every 6 months. VIPER's advantage is iOS requirement (13.0 vs 16.2). 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.

VIPER ships an update every 6 months, FOURKAY Modular Matrix Control daily. The most recent releases landed on September 22, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | VIPER | FOURKAY Modular Matrix Control |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Daily** |
| Monetization | Free | — |
| Size | 34 MB | 2 MB |
| Requires iOS | **13.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Norbain SD Ltd.](https://appshunter.io/developer/428893356) | [Vertical State Ltd](https://appshunter.io/developer/1196513342) |

## What reviewers say

### VIPER

[App page](https://appshunter.io/ios/app/viper-remote/id1258387156)

Connect to Viper recorders remotely using your iOS device. View live and recorded footage, control PTZ cameras, and receive event push notifications for enhanced security monitoring.

**Highlights:** Remote recorder connection, PTZ camera control, Live image viewing, Recorded image viewing, Event push notifications, P2P connection

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

**In-app purchases:** none


### FOURKAY Modular Matrix Control

[App page](https://appshunter.io/ios/app/fourkay-modular-matrix-control/id6764650059)

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

**In-app purchases:** none


## Frequently asked questions

### Is VIPER free?

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

### Is FOURKAY Modular Matrix Control free?

FOURKAY Modular Matrix Control is free to download, with no in-app purchases.

### Do VIPER or FOURKAY Modular Matrix Control have ads?

Neither VIPER nor FOURKAY Modular Matrix Control shows ads.

### Which is updated more often, VIPER or FOURKAY Modular Matrix Control?

VIPER ships an update every 6 months, and FOURKAY Modular Matrix Control daily. Most recently, VIPER was updated on September 22, 2026 and FOURKAY Modular Matrix Control on October 2, 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.*