# IRPCS — Rules of the sea, learnable

> Rules of the sea, learnable (iPhone/iPad app by Paul Whittle.)

- Source: https://appshunter.io/ios/app/irpcs/id6762519800 (this page in markdown: same URL + `.md`)
- Developer: [Paul Whittle](https://appshunter.io/developer/1076749256)
- Category: Education, Reference
- Price: Free with in-app purchases
- Age rating: 17+
- Requires: iOS 15.1 · 49 MB
- Languages: English
- Released: 2026-05-29
- Data updated: 2026-07-08
- User reviews in markdown: https://appshunter.io/ios/app/irpcs/id6762519800/reviews.md

## What is IRPCS?

IRPCS is a focused training app for learning, revising and practising the International Regulations for Preventing Collisions at Sea, commonly known as IRPCS or COLREGS.

Built for skippers, SAR crew, lifeboat crews, maritime students, professional mariners and everyday boaters, IRPCS helps turn complex collision regulations into practical knowledge you can understand, remember and apply on the water.

Whether you are preparing for an RYA, MCA or STCW assessment, supporting Search and Rescue training, refreshing your knowledge before going afloat, or improving your confidence with collision avoidance, IRPCS gives you a clear and structured way to study the rules that keep vessels safe at sea.

The app covers all IRPCS/COLREGS rules, combining the official rule text with plain-English explanations, from experienced professionals. This helps you move beyond memorising wording and understand what each rule means in real situations, including who gives way, what action to take, how vessels should behave in restricted visibility, and how lights, shapes and sound signals are used.

IRPCS is designed for regular practice. Use bite-sized lessons, adaptive quizzes and realistic maritime scenarios to build confidence step by step. Track your progress, identify weak areas and return to the topics that need more work.

Key features include:

• All IRPCS/COLREGS rules in one place
• Official rule text with clear plain-English explanations
• Adaptive quizzes to help identify weak areas
• Realistic collision avoidance scenarios
• Lights, shapes and sound signal practice
• Progress tracking to monitor improvement
• Offline access for use while travelling or at sea
• Useful for SAR, lifeboat, commercial and leisure users
• Suitable for beginners, trainees and experienced mariners

IRPCS is useful for:

• RYA Day Skipper, Coastal Skipper and Yachtmaster preparation
• MCA and STCW maritime training
• Search and Rescue crew development
• Lifeboat crew training and revision
• Commercial vessel operators
• Sailing, motor boating and powerboat users
• Harbour, inshore and coastal navigation
• Refreshing knowledge before going afloat

From steering and sailing rules to responsibilities between vessels, navigation lights, day shapes, sound signals, conduct in restricted visibility and actions to avoid collision, IRPCS helps you practise the knowledge that matters at sea.

Learn the rules. Test your understanding. Build confidence. Stay safer on the water.

Download IRPCS and start improving your COLREGS knowledge today.

Subscription terms:
IRPCS may offer auto-renewing subscriptions that provide access to premium learning, revision and practice features. Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://irpcs.app/privacy
IRPCS Terms: https://irpcs.app/terms

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| IRPCS Pro | $29.99 | per year |
| IRPCS Pro 1 month | $4.99 | per month |



## Version history (last 4 releases)

### 2.1.0 — 2026-07-05

Crew plans are here - IRPCS Pro for your whole club, training school or fleet.

- Sponsored seats: your organisation pre-buys annual seats and manages them in a simple crew portal - invite members by email or a shareable join link, and reuse a seat the moment someone leaves.
- Pro for every member: everyone on a seat gets the full IRPCS Pro experience on their own device, with no store subscription and nothing to pay themselves.
- One annual invoice, with crew pricing agreed per organisation.
- Request a plan in seconds from Settings > Contact us > Crew / team plan, or learn more at irpcs.app/crew.

Plus small fixes and polish.

### 2.0.0 — 2026-06-15

IRPCS 2.0: every question rebuilt and checked against the COLREGS. Pick your rank - quizzes tune to your level, and strong assessment scores earn promotion to the next rank. Mock exams scale to your level. Plus a redesigned Learn tab, an in-app contact form, and a sharper light/dark theme.

### 1.0.2 — 2026-05-31

Improved rule pages with helpful diagrams and quicker access to related practice scenarios.

Better notification setup, including clearer prompts and a fix for users who allowed notifications but were not receiving them.

Updated privacy wording: “Manage ad consent”.

### 1.0 — 2026-05-29

No release notes.

## More apps by Paul Whittle

- [Party Dares: Fun Game to Play With Your Friends](https://appshunter.io/ios/app/party-dares-fun-game-to-play-with-your-friends/id969828768)
- [Airline Pilot Guy](https://appshunter.io/ios/app/airline-pilot-guy/id1076749257)
- [Tiny Doc Scanner - OCR](https://appshunter.io/ios/app/tiny-doc-scanner-ocr/id1092889255)
- [Tiny Doc Scanner](https://appshunter.io/ios/app/tiny-doc-scanner/id1092965162)
- [Zombie Nibblers](https://appshunter.io/ios/app/zombie-nibblers/id1101276077)

All apps by Paul Whittle: https://appshunter.io/developer/1076749256

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-08.*