# STEMAX Private vs Электронная сервисная книга

The clearest difference is update cadence: Электронная сервисная книга at daily against STEMAX Private's every 55 months. STEMAX Private's advantage is iOS requirement (12.0 vs 15.0). 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.

STEMAX Private ships an update every 55 months, Электронная сервисная книга daily. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | STEMAX Private | Электронная сервисная книга |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 55 months | **Daily** |
| Monetization | Free | — |
| Size | 3 MB | 3 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [НПП Стелс](https://appshunter.io/developer/1293122923) | [Sergey Zverev](https://appshunter.io/developer/1548428368) |

## What reviewers say

### STEMAX Private

[App page](https://appshunter.io/ios/app/stemax-private/id1126250277)

This utility allows users to send SMS commands and make calls to Privat series controllers with a single button press. It provides a unified list of objects with detailed sections, event logs, and access to the controller's voice menu. Monitor temperature, SIM card balance, power status, and manage control outputs.

**Highlights:** Send SMS commands to controllers, Check controller status, View event logs, Access voice menu, Monitor temperature and balance, Manage control outputs

**Features:** macOS Compatibility

**In-app purchases:** none


### Электронная сервисная книга

[App page](https://appshunter.io/ios/app/id6803786974)

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

**In-app purchases:** none


## Frequently asked questions

### Is STEMAX Private free?

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

### Is Электронная сервисная книга free?

Электронная сервисная книга is free to download, with no in-app purchases.

### Do STEMAX Private or Электронная сервисная книга have ads?

Neither STEMAX Private nor Электронная сервисная книга shows ads.

### Which is updated more often, STEMAX Private or Электронная сервисная книга?

STEMAX Private ships an update every 55 months, and Электронная сервисная книга daily. Most recently, STEMAX Private was updated on October 7, 2026 and Электронная сервисная книга on October 24, 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.*