# Z4 Ultra

> GSM switch app for controlling home alarm systems via SMS. (iPhone/iPad app by M S Dehkordi.)

- Source: https://appshunter.io/ios/app/z4-ultra/id949288308 (this page in markdown: same URL + `.md`)
- Developer: [M S Dehkordi](https://appshunter.io/developer/791605265)
- Category: Utilities, Productivity
- Price: Free
- Rating: 3.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 6.0 · 2 MB
- Languages: American English
- Released: 2014-12-30
- Data updated: 2026-06-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/z4-ultra/id949288308/reviews.md

## What is Z4 Ultra?

This app is a simplified and more user-friendly version of our previous app; G1 Pro. The layout is designed specifically for people who want to turn on and off compatible home alarm systems with GSM switches. By using this app you don't need to type the specific SMS content and the app fill the text for you. 

This is the first release of this app and you feedback would help us to improve it.

Please note: This app is useful if your alarm system manufacturer mentioned so !

## Key features

- Control home alarm systems
- Utilizes GSM switches
- Simplified SMS command generation
- User-friendly interface
- First release with user feedback focus

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/z4-ultra/id949288308/reviews.md

### 3/5 — Incompatible with iOS 11

*2017-10-31*

Please fix the iOS 11 incompatibility.

## Frequently asked questions about Z4 Ultra

### Does Z4 Ultra have ads?

No, Z4 Ultra does not contain advertisements.

### What is the rating for Z4 Ultra?

Z4 Ultra has a rating of 3.0 stars based on 1 rating.

### What devices support Z4 Ultra?

Z4 Ultra is supported on iPhone and iPod devices.

### What is the age rating for Z4 Ultra?

Z4 Ultra has an age rating of 4+.

### When was Z4 Ultra last updated?

Z4 Ultra was last updated on December 30, 2014, with version V1.0.

### How does Z4 Ultra work with alarm systems?

Z4 Ultra is designed to turn on and off compatible home alarm systems that utilize GSM switches. It automatically generates the necessary SMS content for control.

### Is Z4 Ultra useful for all alarm systems?

No, Z4 Ultra is only useful if your specific alarm system manufacturer has indicated compatibility with this type of application.

## Version history (last 1 release)

### V1.0 — 2014-12-30

This app has been updated by Apple to display the Apple Watch app icon.

## Apps similar to Z4 Ultra

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [Fence Alarm](https://appshunter.io/ios/app/fence-alarm/id959488949) | 5.0 (1) | Free | Utilities |
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## More apps by M S Dehkordi

- [G1+](https://appshunter.io/ios/app/g1-plus/id791605262)
- [G1 Pro](https://appshunter.io/ios/app/g1-pro/id858263091)
- [Z4 Farsi](https://appshunter.io/ios/app/z4-farsi/id954590814)
- [Z4 Multi](https://appshunter.io/ios/app/z4-multi/id1023816036)
- [Classic Setup](https://appshunter.io/ios/app/classic-setup/id1073125579)

All apps by M S Dehkordi: https://appshunter.io/developer/791605265

## Related topics

[z4 ultra](https://appshunter.io/ios/topics/z4-ultra)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-11.*