# Comber PS vs Sailor's Deck

The clearest difference is update cadence: Sailor's Deck at every 3 weeks against Comber PS's every 25 months. Comber PS's advantage is iOS requirement (12.0 vs 15.1). 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.

Comber PS ships an update every 25 months, Sailor's Deck every 3 weeks. The most recent releases landed on September 16, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | Comber PS | Sailor's Deck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sailors-deck-colregs/id6761303264/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 3 weeks** |
| Monetization | — | Paid |
| Size | 67 MB | 23 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BUSINESS SYSTEM SOLUTIONS (N.I.) LTD](https://appshunter.io/developer/549288322) | [Vladimir Arefev](https://appshunter.io/developer/1888773460) |

## What reviewers say

### Comber PS

[App page](https://appshunter.io/ios/app/comber-ps/id1479116691)

**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:** none


## Frequently asked questions

### Is Comber PS free?

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

### Is Sailor's Deck free?

Sailor's Deck is free to download, with no in-app purchases.

### Do Comber PS or Sailor's Deck have ads?

Neither Comber PS nor Sailor's Deck shows ads.

### Which is updated more often, Comber PS or Sailor's Deck?

Comber PS ships an update every 25 months, and Sailor's Deck every 3 weeks. Most recently, Comber PS was updated on September 16, 2026 and Sailor's Deck on August 14, 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.*