# Maritime Academy: ICS Flags — Learn Maritime Signal Flags

> Learn maritime signal flags and International Code of Signals with structured lessons and challenges. (iPhone/iPad app by Xiang Dong.)

- Source: https://appshunter.io/ios/app/maritime-academy-ics-flags/id1590113271 (this page in markdown: same URL + `.md`)
- Developer: [Xiang Dong](https://appshunter.io/developer/1511041685)
- Category: Education, Reference
- Price: Free with in-app purchases
- Rating: 4.90/5 from 185 App Store ratings · 14 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 26 MB
- Languages: American English
- Released: 2021-10-14
- Data updated: 2026-08-12
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/maritime-academy-ics-flags/id1590113271/reviews.md

## What is Maritime Academy?

Features:

- designed for mariners, travellers, yachtsmen, pleasure cruisers and anyone who enjoys spending time around the waterfront.
- 104 levels and 35 challenges teaching and training maritime flag signalling and the International Code of Signals (ICS).
- 6 chapters including Letters, Numbers, Words, Substitutes, Single Flag Meanings and Abbreviations.
- effective and fun teaching and training strategy: learn and train first with ease and then challenge yourself with pressure.
- calculated amount of repetition for smooth and efficient memorization and progress.
- explore all the letters, numbers, substitutes and abbreviations at your own pace on the Explore screen.
- info screen offering detailed explanation of how to make the most of the app.
- absolutely no ads.
- works completely offline.

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About Maritime Academy

The app teaches maritime flag signalling (generally flaghoist signalling), which is the principal means other than radio by which ships communicate to each other or to shore.

Virtually all signalling by non-naval vessels is now organized under the International Code of Signals (whether by flaghoist, semaphore, signal lamp, or other means), which specifies a standard set of flags and codes and is the most recent evolution of a wide variety of maritime flag signalling systems. Naval vessels generally use an extended set of flags and their own codes.

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Teaching method

The two key teaching and training concepts are progressive introduction and focused repetition. The learning material is categorized into chapters and then broken down into manageable units (levels) to ensure efficient learning and training.

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Learning material

In general, the learning progresses from single-flag content to multi-flag content. That is to say, from letters & numbers to words & substitutes, and then to single flag meanings & abbreviations. The content is arranged for optimal efficiency and we strongly recommend you to go through the levels in this order.

- Letters (8 levels + 4 challenges)
- Numbers (3 levels + 1 challenge)
- Words (30 levels)
- Substitutes (1 level)
- Single Flag Meanings (8 levels + 4 challenges)
- Abbreviations (54 levels + 26 challenges)

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Levels and challenges

In short, a level focuses on introducing and training new letters/numbers/abbreviations, while a challenge tests what you’ve learnt. In the learning screen, the knowledge you should focus on is highlighted and in the training screen, you will practice by answering a few questions (like a quiz game). In a challenge, you must make less than 3 mistakes to pass it.

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Training types

There are three training types, that is to say, key, typing and button.

- In Letters & Numbers levels, you need to press the keys of the keyboard on the screen to answer the questions.
- In Words & Substitutes levels, you need to type whole words to answer the questions.
- In Single Flag Meanings & Abbreviations levels, you need to choose the correct meaning by clicking on a button.

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The Explore screen

The Explore screen allows users to check out the International Flags and Pennants of the 26 letters of the English Alphabet, numbers (0-9), substitutes (3), as well as the International Code of Signals including 25 single flag meanings and 201 most frequently used abbreviations. Simply click on the blocks to start exploring.

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Download Maritime Academy now and start learning the signal flags!

Privacy Policy: https://www.dong.digital/maritimeacademy/privacy/
Terms of Use: https://www.dong.digital/maritimeacademy/tos/

## Key features

- 104 levels and 35 challenges
- Covers Letters, Numbers, Words, Substitutes, Single Flag Meanings, Abbreviations
- Progressive learning and focused repetition
- Explore screen for self-paced learning
- Works completely offline
- No ads

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Premium | $2.99 | one-time |


## Recent user reviews (10 of 14)

All indexed reviews: https://appshunter.io/ios/app/maritime-academy-ics-flags/id1590113271/reviews.md

### 5/5 — Perfect for deck cadets

*2026-04-25, version 1.3*

10/10 recommendation for Maritime students

### 5/5 — Useful app

*2026-01-08*

Provide easy way to learn the maritime flags, also help to learn in less time

### 5/5 — Even free content is good

*2025-10-22, version 1.3*

This app made it absolutely effortless to learn A-Z and 0-9. Thank you.

### 5/5 — Great for cadets

*2024-09-15, version 1.0*

Really efficient and we'll thought out way to learn the flags and penants

### 5/5 — Helpful

*2024-09-04*

My bf have to test for signal exam. He doesn’t know how to get it easily. I look for what ways are the best to get easily. At this time I found you. So so helpful for him. Thank u very much🩷

### 5/5 — Making Learning Fun Again

*2024-05-23*

Great IU, easy and fun interface

### 5/5 — ТТТ

*2023-11-27*

Все просто! Построено на визуальном 
запоминании информации.

### 5/5 — Really good intro to maritime flags.

*2023-07-10, version 1.0*

I’m new to the maritime employment sector, and have found this app really useful. It’s easy to navigate, no ads and the layout of the quizzes make it very easy to learn.

### 5/5 — Great app would recommend to all

*2023-05-28*

Very nice app. The only thing that would make it better would be to put a list showing all the flags with their names next to them so that if you need to find a flag it is easier. Otherwise great app!

### 5/5 — Fun and educational

*2022-09-10, version 1.0*

Great app to review, familiarize, and have fun with the levels and challenge.

## Frequently asked questions about Maritime Academy

### What does the Maritime Academy: ICS Flags app teach?

This app teaches maritime flag signalling, which is a primary method for ships to communicate with each other or with shore. It focuses on the International Code of Signals (ICS), covering flag meanings, abbreviations, and various communication scenarios.

### What are the key learning features of the app?

The app features 104 levels and 35 challenges designed for effective learning and training. It breaks down content into 6 chapters, including Letters, Numbers, Words, Substitutes, Single Flag Meanings, and Abbreviations, using progressive introduction and focused repetition for efficient memorization.

### Is the app free to use or does it have a cost?

The app is free to download and use, with in-app purchases available. This model allows users to explore the core content for free while offering additional content or features through purchases.

### Can I use the app offline?

Yes, the app is designed to work completely offline. This means you can learn and practice maritime signal flags and the International Code of Signals without needing an internet connection, making it ideal for use at sea or in remote locations.

### Who is the target audience for this app?

The app is designed for a wide range of users, including mariners, travellers, yachtsmen, pleasure cruisers, and anyone who spends time around the waterfront and is interested in learning about maritime communication and flag signalling.

## Version history (last 2 releases)

### 1.3 — 2025-03-26

- In-app purchase bug fix for iOS 18.2.

### 1.0 — 2021-10-14

No release notes.

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All apps by Xiang Dong: https://appshunter.io/developer/1511041685

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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 2026-08-12.*