# Crewservices. Дельта тест 3.0 vs cMate Apps Конвенция плюс

The clearest difference is update cadence: Crewservices. Дельта тест 3.0 at every 5 weeks against cMate Apps Конвенция плюс's every 12 months. cMate Apps Конвенция плюс's advantage is iOS requirement (12.0 vs 14.0). 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.

Crewservices. Дельта тест 3.0 ships an update every 5 weeks, cMate Apps Конвенция плюс every 12 months. The most recent releases landed on September 8, 2026 and August 31, 2026 respectively.

## The numbers

| Metric | Crewservices. Дельта тест 3.0 | cMate Apps Конвенция плюс |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 22.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 12 months |
| Monetization | — | Free |
| Size | 74 MB | 14 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexey Seleznev](https://appshunter.io/developer/1211190063) | [Maxim Lukyanenko](https://appshunter.io/developer/1496252741) |

## What reviewers say

### Crewservices. Дельта тест 3.0

[App page](https://appshunter.io/ios/app/crewservices-30/id1211190064)

**Features:** macOS Compatibility

**In-app purchases:** none


### cMate Apps Конвенция плюс

[App page](https://appshunter.io/ios/app/cmate-apps/id6502718737)

This app consolidates all developer applications, focusing on maritime training and information for users, especially those in Russia. It offers preparation modules for various maritime roles and certifications, alongside informational tools for navigation and port data.

**Highlights:** Maritime certification preparation, Specialized training modules, Information on vessels and ports, IMO phrases and codes, Consolidated developer apps

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Crewservices. Дельта тест 3.0 free?

Crewservices. Дельта тест 3.0 is free to download, with no in-app purchases.

### Is cMate Apps Конвенция плюс free?

cMate Apps Конвенция плюс is free to download, with no in-app purchases.

### Do Crewservices. Дельта тест 3.0 or cMate Apps Конвенция плюс have ads?

Neither Crewservices. Дельта тест 3.0 nor cMate Apps Конвенция плюс shows ads.

### Which is updated more often, Crewservices. Дельта тест 3.0 or cMate Apps Конвенция плюс?

Crewservices. Дельта тест 3.0 ships an update every 5 weeks, and cMate Apps Конвенция плюс every 12 months. Most recently, Crewservices. Дельта тест 3.0 was updated on September 8, 2026 and cMate Apps Конвенция плюс on August 31, 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.*