# Z4 Multi vs Silex Fortress

The clearest difference is update cadence: Silex Fortress at monthly against Z4 Multi's every 105 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.

Z4 Multi ships an update every 105 months, Silex Fortress monthly. The most recent releases landed on June 11, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Z4 Multi | Silex Fortress |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 105 months | **Monthly** |
| Monetization | Free | — |
| Size | 5 MB | 15 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [M S Dehkordi](https://appshunter.io/developer/791605265) | [Shayan Porsche](https://appshunter.io/developer/1512650838) |

## What reviewers say

### Z4 Multi

[App page](https://appshunter.io/ios/app/z4-multi/id1023816036)

This advanced application allows users to remotely manage and control up to eight compatible intruder alarm systems. It serves as an upgraded version of previous related applications, offering enhanced functionality for security system oversight.

**Highlights:** Control up to 8 alarm systems, Advanced version, Remote management, Compatible with intruder alarms

**Features:** macOS Compatibility

**In-app purchases:** none


### Silex Fortress

[App page](https://appshunter.io/ios/app/silex-fortress/id6753670365)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Z4 Multi free?

Z4 Multi is free to download, with no in-app purchases.

### Is Silex Fortress free?

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

### Do Z4 Multi or Silex Fortress have ads?

Neither Z4 Multi nor Silex Fortress shows ads.

### Which is updated more often, Z4 Multi or Silex Fortress?

Z4 Multi ships an update every 105 months, and Silex Fortress monthly. Most recently, Z4 Multi was updated on June 11, 2026 and Silex Fortress on September 23, 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.*