# ЦУСАД vs System Etalon

The clearest difference is iOS requirement: ЦУСАД at 13.4 against System Etalon's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ЦУСАД ships an update every 2 months, System Etalon every 5 weeks. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | ЦУСАД | System Etalon |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 66 MB | 49 MB |
| Requires iOS | **13.4** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [LABORATORIYA MINIMAKS, OOO](https://appshunter.io/developer/1584797707) | [ООО "Сибирские интеграционные системы"](https://appshunter.io/developer/1475403193) |

## What reviewers say

### ЦУСАД

[App page](https://appshunter.io/ios/app/id1584797405)

**Features:** macOS Compatibility

**In-app purchases:** none


### System Etalon

[App page](https://appshunter.io/ios/app/system-etalon/id6505130186)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ЦУСАД free?

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

### Is System Etalon free?

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

### Do ЦУСАД or System Etalon have ads?

Neither ЦУСАД nor System Etalon shows ads.

### Which is updated more often, ЦУСАД or System Etalon?

ЦУСАД ships an update every 2 months, and System Etalon every 5 weeks. Most recently, ЦУСАД was updated on November 3, 2026 and System Etalon on November 8, 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.*