Maritime Academy vs Nautical Flags Helper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Maritime Academy
Learn maritime signal flags and the International Code of Signals through engaging levels and challenges. This app offers a structured approach to mastering flag meanings, abbreviations, and communication methods used at sea. It's designed for efficient memorization and progress, suitable for various maritime enthusiasts.
- 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
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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. -------- 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. -------- 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. -------- 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) -------- 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. -------- 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. -------- 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. -------- 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/
Nautical Flags Helper
Master nautical signal flags, Morse code, and semaphore with interactive flashcards and quizzes. Learn individual flag meanings, over 1,800 multiple-flag signals, and practice with progress tracking. Ideal for sailors, maritime students, and enthusiasts.
- Learn 26 letter flags and phonetic names
- Study over 1,800 multiple-flag signals
- Master Morse code with audio playback
- Practice flag semaphore arm positions
- Interactive flashcard study mode
- Three levels of challenging quizzes
- Track study progress with charts
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Learn the international signal flags, Morse code and flag semaphore in one app. Study with clear pictures and flashcards, then test yourself with quizzes at three levels. Made for sailors, boaters, sea cadets, maritime students and anyone curious about how ships talk to each other. SIGNAL FLAGS, A TO Z • All 26 letter flags, from Alfa to Zulu, with the phonetic name of each one • The meaning of every flag when flown alone, such as A: "I have a diver down; keep well clear at slow speed" and O: "Man overboard" • Ten numeral pennants with their code words, such as Nadazero and Unaone • The four substitute flags and the answering pennant, with how each one is used MULTIPLE-FLAG SIGNALS Browse more than 1,800 flag signals based on the International Code of Signals (Pub. 102, 2020 edition). • General two-letter signals, such as NC "I am in distress and require immediate assistance" • Medical three-letter signals that start with M, such as MAA "I request urgent medical advice" • Worked examples of numbers: courses, bearings, dates, times, latitude, longitude, distance and speed • Step-by-step examples of how substitute flags repeat a flag in the same hoist • Tables of complements that add detail to a signal, like the kind of assistance or the state of the sea • Search by code or by word, and switch to List View to see every meaning at a glance MORSE CODE • Dots and dashes for every letter and number • Tap Listen to hear how each character sounds FLAG SEMAPHORE • Arm positions for every letter and number • Special signals such as Attention, Error, Cancel, Numerals and Space STUDY YOUR WAY • Flashcard Mode: tap a card to flip it and check your answer • Shuffle the cards or sort them from A to Z • Zoom in to see the details of each flag • Short explanations of each topic, with links to read more on Wikipedia QUIZZES AT THREE LEVELS • Easy (10 questions), Medium (20 questions) and Hard (30 questions) • Match a picture to its name, or a name to its picture • Medium and Hard also ask what each signal means • Hard picks wrong answers that look like the right one, so you learn the differences between similar flags and Morse patterns • Use a hint to remove two wrong answers • Build a custom quiz from letters, numbers, Morse code and semaphore • Turn on "Next question automatically" for faster practice • See your correct, incorrect and skipped answers and your time after each quiz TRACK YOUR PROGRESS • Daily goals for questions answered and study time • Charts of correct and incorrect answers by day, week, month and year • Total quizzes, average accuracy, time spent and best score BUILT FOR IPHONE AND IPAD • Light and Dark Mode, or follow your system setting • Layouts made for iPhone and iPad • Available in English, Spanish, French and Russian Whether you are preparing for a sailing course, refreshing your seamanship skills or teaching a youth group, Nautical Flags Helper keeps the flags, Morse code and semaphore in your pocket. The app is free to use and shows ads. An optional one-time in-app purchase removes all ads. There is no subscription. This app is a study aid. It is not an official publication and is not intended for navigation.
Screenshots
Verdict
The clearest difference is ads: Maritime Academy at none against Nautical Flags Helper's shown. Maritime Academy also leads on ratings volume (192 vs 1) and iOS requirement (13.0 vs 16.0). Nautical Flags Helper's advantage is update cadence (every 13 months vs every 42 months). On price, rating, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Maritime Academy sells 1 one-off in-app purchase and Nautical Flags Helper sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.9 for Maritime Academy against 5.0 for Nautical Flags Helper. That said, the two scores are not equally well evidenced: Maritime Academy has 192 ratings behind it against 1, so its average is the more settled of the two.
Maritime Academy ships an update every 42 months, Nautical Flags Helper every 13 months. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.
| Parameter | Maritime Academy | Nautical Flags Helper |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (192 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 192 — better | 1 |
| Update frequency | Every 42 months | Every 13 months — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 26 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | Xiang Dong | Dmitrii Napolov |
Customer experience
Maritime Academy
Nautical Flags Helper
In-app purchases
Maritime Academy
- Lifetime Premium$2.99
Nautical Flags Helper
- Remove Ads$5.99
Questions
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Is Nautical Flags Helper free?
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