Comparison

Sailing Quiz HD vs Nautical Flags Helper

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sailing Quiz HD

Enhance your maritime knowledge with interactive lessons and quizzes covering navigation, safety, and regulations. This app is ideal for sailors, yachters, and boaters of all levels to prepare for exams or refresh their skills. Learn and practice essential sailing concepts anytime, anywhere, even offline.

Highlights
  • Interactive lessons and quizzes
  • Covers chartwork, safety, buoyage, and more
  • Offline functionality
  • Questions, pictures, and animations
  • Regularly updated content
  • Suitable for beginners and experienced sailors
Features
Read full description

Sailing Quiz HD by Nautica SIA is the perfect app for sailors, yachters, and boaters who want to brush up on their chartwork, safety, buoyage, light's and shapes, sound signals, meteorology, GMDSS, and anchoring skills. With interactive lessons and quizzes, this app is a great tool for sailing education, whether you're a beginner or an experienced sailor. With more than 10 years of sailing education and a plethora of new captains, miles, and waves, Sailing Quiz HD has established itself as the go-to app for sailing education. It's an interactive learning tool for seamen, sailing, and motorboat captains that you can use to prepare for tests, refresh your knowledge before heading out to sea, or simply practice your sailing skills. One of the best things about Sailing Quiz HD is that you can use it offline, even on a plane, making it a great tool for brushing up on your sailing skills before you reach your desired sailing or power yacht charter destination. The app features questions, pictures, animations, and learning resources, as well as a help section. Sailing schools also find this app useful for testing their students, and the test is frequently updated with new questions. Currently, the following themes are available in the app: Safety International Code of Signals (Signal flags) Anatomy of a yacht Terminology 101 Sailing theory Points of Sail Seamanship Knots Pilotage Buoyage Buoyage at night Light characteristic Navigation 101 Route planning Meteorology 101 High's and Low's Ship's Lights & Shapes Sound signals GMDSS The app is designed to help you prepare for your sailing lessons, exams, and bareboat charter. You can use it to learn and refresh your knowledge of colregs and other sailing regulations. With the anchoring lesson, you can also practice your anchoring skills, which are crucial for safe and enjoyable sailing. Sailing instructors also find this app useful as a teaching aid, and it's popular among sailors, yachters, and boaters in the USA, Canada, Europe and Worldwide. Download Sailing Quiz HD now and improve your sailing skills today! https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

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.

Highlights
  • 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
Features
Read full description

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

Sailing Quiz HD4 screens
Nautical Flags Helper4 screens

Verdict

The call

The clearest difference is ads: Sailing Quiz HD at none against Nautical Flags Helper's shown. Sailing Quiz HD also leads on update cadence (every 3 months vs every 13 months) and ratings volume (11 vs 1). Nautical Flags Helper's advantage is rating (5.0 vs 4.5). On price, in-app purchases, monetization model and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sailing Quiz HD sells 2 in-app purchases, starting at $4.99 per month and Nautical Flags Helper sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Nautical Flags Helper holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Sailing Quiz HD has 11 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Sailing Quiz HD ships an update every 3 months, Nautical Flags Helper every 13 months. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.

Scorecard5 real differences · 5 level
Sailing Quiz HD versus Nautical Flags Helper: the parameters behind the verdict, then further details
ParameterSailing Quiz HDNautical Flags Helper
PriceFreeFree
Rating4.5 (11 ratings)5.0 (1 ratings) — better
Positive reviews44.8% of reviews—
Number of ratings11 — better1
Update frequencyEvery 3 months — betterEvery 13 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.5 — better16.0
Further details — not scored
Size37 MB46 MB
Age rating4+4+
DeveloperNautica SIADmitrii Napolov

Customer experience

Sailing Quiz HD

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews29 reviews
Positive44.8%
Neutral10.3%
Negative44.8%

Nautical Flags Helper

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Sailing Quiz HD

Subscriptions2
  • 1 Month$4.991 Month
  • 1 Year$22.991 Year
1 purchases

Nautical Flags Helper

One-time1
  • Remove Ads$5.99

Questions

Is Sailing Quiz HD free?
Sailing Quiz HD is free to download, with in-app purchases available.
Is Nautical Flags Helper free?
Nautical Flags Helper is free to download, with in-app purchases available.
Which has better reviews, Sailing Quiz HD or Nautical Flags Helper?
Nautical Flags Helper is rated higher. Sailing Quiz HD averages 4.5 out of 5 from 11 ratings, while Nautical Flags Helper averages 5.0 from 1 ratings.
Do Sailing Quiz HD or Nautical Flags Helper have ads?
Nautical Flags Helper shows ads; Sailing Quiz HD does not.
Which is updated more often, Sailing Quiz HD or Nautical Flags Helper?
Sailing Quiz HD ships an update every 3 months, and Nautical Flags Helper every 13 months. Most recently, Sailing Quiz HD was updated on November 1, 2026 and Nautical Flags Helper on November 8, 2026.

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