# Crewservices. Дельта тест 3.0 vs Дельта тест 3.0 Конвенция Плюс

The clearest difference is in-app purchases: Crewservices. Дельта тест 3.0 at none against Дельта тест 3.0 Конвенция Плюс's 20. Дельта тест 3.0 Конвенция Плюс's advantage is iOS requirement (12.0 vs 14.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Дельта тест 3.0 Конвенция Плюс sells 20 one-off in-app purchases. Crewservices. Дельта тест 3.0 asks for nothing beyond the download.

Crewservices. Дельта тест 3.0 ships an update every 5 weeks, Дельта тест 3.0 Конвенция Плюс every 2 months. The most recent releases landed on September 8, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Crewservices. Дельта тест 3.0 | Дельта тест 3.0 Конвенция Плюс |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (16 ratings)](https://appshunter.io/ios/app/30/id1551857081/reviews)** |
| Number of ratings | — | **16** |
| Positive reviews | — | 67.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 74 MB | 109 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) | [Andrey Andreyev](https://appshunter.io/developer/1418253369) |

## 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


### Дельта тест 3.0 Конвенция Плюс

[App page](https://appshunter.io/ios/app/30/id1551857081)

This app provides an up-to-date collection of official questions and answers with commentary for maritime certification exams. It offers various study modes, including text-based learning, unlimited practice, and exam simulations, all accessible offline.

**Highlights:** Official questions and answers, Commentary and keyword search, Study modes: text, marathon, exam, Error correction feature, Offline access

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (20)**

| Purchase | Price | Billing |
| --- | --- | --- |
| БЛОК КАПИТАН - ВСЕ ВОПРОСЫ | $2.99 | one-time |
| БЛОК ВПК - ВСЕ ВОПРОСЫ | $2.99 | one-time |
| Танкеры Нефть Химия Начальная | $2.99 | one-time |
| Дельта Полярные воды ответы | $2.99 | one-time |
| ВАХТЕННЫЙ МОТ. - ВСЕ ВОПРОСЫ | $2.99 | one-time |
| ВАХТЕННЫЙ МЕХ. - ВСЕ ВОПРОСЫ | $2.99 | one-time |
| ВТОРОЙ МЕХАНИК- ВСЕ ВОПРОСЫ | $2.99 | one-time |
| ЭЛЕКТРОМЕХАНИК - ВСЕ ВОПРОСЫ | $2.99 | one-time |
| СТАРШИЙ МЕХАНИК - ВСЕ ВОПРОСЫ | $2.99 | one-time |
| БЛОК МАТРОС - ВСЕ ВОПРОСЫ | $2.99 | one-time |
| БЛОК СПК - ВСЕ ВОПРОСЫ | $2.99 | one-time |
| ГМССБ ДЕЛЬТА-ТЕСТ(ВСЕ ВОПРОСЫ) | $3.99 | one-time |
| Тесты Танкер Газовоз Начальная | $3.99 | one-time |
| Нефтяные Танкеры Расширенная | $3.99 | one-time |
| Танкеры Химовозы Расширенная | $3.99 | one-time |
| Тесты Моторист 1-го класса | $3.99 | one-time |
| Дельта тест ОСПС (ISPS) ответы | $3.99 | one-time |
| БЖС борьба за живучесть судов | $3.99 | one-time |
| Дельта ЭКНИС ECDIS тест ответы | $3.99 | one-time |
| Танкер Газовозы - ВСЕ ВОПРОСЫ | $3.99 | one-time |


## 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 Дельта тест 3.0 Конвенция Плюс free?

Дельта тест 3.0 Конвенция Плюс is free to download, with in-app purchases available.

### Do Crewservices. Дельта тест 3.0 or Дельта тест 3.0 Конвенция Плюс have ads?

Neither Crewservices. Дельта тест 3.0 nor Дельта тест 3.0 Конвенция Плюс shows ads.

### Which is updated more often, Crewservices. Дельта тест 3.0 or Дельта тест 3.0 Конвенция Плюс?

Crewservices. Дельта тест 3.0 ships an update every 5 weeks, and Дельта тест 3.0 Конвенция Плюс every 2 months. Most recently, Crewservices. Дельта тест 3.0 was updated on September 8, 2026 and Дельта тест 3.0 Конвенция Плюс on September 26, 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.*