# Crewservices. Дельта тест 3.0 vs Sailor's Deck

The clearest difference is rating: Sailor's Deck at 5.0 against Crewservices. Дельта тест 3.0's 3.8. Crewservices. Дельта тест 3.0's advantage is in-app purchases (none vs 3) and ratings volume (6 vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Sailor's Deck sells 3 one-off in-app purchases. Crewservices. Дельта тест 3.0 asks for nothing beyond the download.

Sailor's Deck holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Crewservices. Дельта тест 3.0 has 6 ratings behind it against 1, so its average is the more settled of the two.

Crewservices. Дельта тест 3.0 ships an update every 5 weeks, Sailor's Deck every 3 weeks. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Crewservices. Дельта тест 3.0 | Sailor's Deck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (6 ratings)](https://appshunter.io/ios/app/crewservices-30/id1211190064/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sailors-deck-colregs/id6761303264/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | **Free** | Paid |
| Size | 74 MB | 23 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexey Seleznev](https://appshunter.io/developer/1211190063) | [Vladimir Arefev](https://appshunter.io/developer/1888773460) |

## What reviewers say

### Crewservices. Дельта тест 3.0

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

This app helps seafarers find job openings, manage their resumes, and prepare for maritime certification tests. It offers practice exams, study materials, and direct communication with employers.

**Highlights:** Find job vacancies across Russia, Search for direct employer listings, Create and manage professional resumes, Prepare for Delta Test 3.0 certification, Unlimited practice tests, Offline functionality, Direct calls to employers

**Features:** macOS Compatibility

**In-app purchases:** none


### Sailor's Deck

[App page](https://appshunter.io/ios/app/sailors-deck-colregs/id6761303264)

Master navigation lights and day shapes for skipper exams with this flashcard app. It uses spaced repetition to build lasting visual memory, tracks your progress, and resurfaces difficult configurations until they stick. Study offline with no ads or subscriptions.

**Highlights:** Spaced repetition learning, Four-layer progression of study, Confusion pair training, Offline functionality, Progress tracking and session summaries, Association-specific terminology, Daily streak motivator

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Buy a Coffee | $2.99 | one-time |
| Generous Tip | $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 Sailor's Deck free?

Sailor's Deck is free to download, with in-app purchases available.

### Which has better reviews, Crewservices. Дельта тест 3.0 or Sailor's Deck?

Sailor's Deck is rated higher. Crewservices. Дельта тест 3.0 averages 3.8 out of 5 from 6 ratings, while Sailor's Deck averages 5.0 from 1 ratings.

### Do Crewservices. Дельта тест 3.0 or Sailor's Deck have ads?

Neither Crewservices. Дельта тест 3.0 nor Sailor's Deck shows ads.

### Which is updated more often, Crewservices. Дельта тест 3.0 or Sailor's Deck?

Crewservices. Дельта тест 3.0 ships an update every 5 weeks, and Sailor's Deck every 3 weeks. Most recently, Crewservices. Дельта тест 3.0 was updated on October 26, 2026 and Sailor's Deck on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*