# ZONT Ретро vs Stemax Mobile

The clearest difference is in-app purchases: Stemax Mobile at none against ZONT Ретро's 7. ZONT Ретро's advantage is update cadence (monthly vs every 9 months) and review sentiment (34% vs 24%). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ZONT Ретро sells 7 one-off in-app purchases. Stemax Mobile asks for nothing beyond the download.

ZONT Ретро ships an update monthly, Stemax Mobile every 9 months. Both last shipped on November 6, 2026.

## The numbers

| Metric | ZONT Ретро | Stemax Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (68 ratings)](https://appshunter.io/ios/app/zont/id605281976/reviews)** | — |
| Number of ratings | **68** | — |
| Positive reviews | **33.8% of reviews** | 24.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 9 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 85 MB | 51 MB |
| Requires iOS | 15.7 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZONT ONLAIN, OOO](https://appshunter.io/developer/1549497171) | [НПП Стелс](https://appshunter.io/developer/1293122923) |

## What reviewers say

### ZONT Ретро

[App page](https://appshunter.io/ios/app/zont/id605281976)

Remote control and management for ZONT and Mega SX devices, including car alarms, home security, and heating systems. Monitor and control various devices from anywhere with internet access, receiving instant alerts for events and viewing live video feeds.

**Highlights:** Remote control of car alarms, Home security system management, Heating system control, Real-time event alerts, Live video streaming from IP cameras, Control multiple device types, Geographical location tracking

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Пополнение баланса | $2.99 | one-time |
| Тариф PRO на месяц | $2.99 | one-time |
| Пополнение баланса | $6.99 | one-time |
| Пополнение баланса | $10.99 | one-time |
| Пополнение баланса | $13.99 | one-time |
| Расширить срок хранения данных | $15.99 | one-time |
| Купить прошивку ZONT H-2000+ | $45.99 | one-time |


### Stemax Mobile

[App page](https://appshunter.io/ios/app/stemax-mobile/id1244675771)

This application allows security company clients to remotely manage their properties. Receive real-time alerts for security events and equipment status. Control alarm modes, view sensor data, and send SOS signals.

**Highlights:** Remote property management, Real-time security alerts, Equipment status monitoring, Alarm mode control, SOS signal function, Event log with filtering

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

**In-app purchases:** none


## Frequently asked questions

### Is ZONT Ретро free?

ZONT Ретро is free to download, with in-app purchases available.

### Is Stemax Mobile free?

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

### Do ZONT Ретро or Stemax Mobile have ads?

Neither ZONT Ретро nor Stemax Mobile shows ads.

### Which is updated more often, ZONT Ретро or Stemax Mobile?

ZONT Ретро ships an update monthly, and Stemax Mobile every 9 months. Most recently, ZONT Ретро was updated on November 6, 2026 and Stemax Mobile on November 6, 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.*