Comparison

Marinus vs Ship Structure

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

Head to head
About

Marinus

This app provides comprehensive guidance on maritime navigation rules and signals. It offers detailed information on flags, lights, sounds, and buoyage systems, along with interactive quizzes and a map feature. Designed for sailors, it ensures safe navigation on any vessel.

Highlights
  • Maritime flags and meanings
  • Weather scales and cloud identification
  • Sound signal guidance
  • Vessel navigation light diagrams
  • Day shape identification
  • Safe navigation maneuvers
  • Morse code decoder
  • IALA Buoyage System
  • Radio communication guidelines
  • COLREGs text
Features
Read full description

Not just another app for navigation rules… this is THE app for navigation rules! Created by sailors, for sailors, Marinus COLREGs is designed to provide clear and instant answers to your questions anytime, anywhere. It's the essential app for your sailboat or motorboat. Key Features: • Flags – All maritime flags with their meanings. • Meteo – Beaufort and Douglas scales, plus cloud identification. • Sounds – Navigate safely with sound signal guidance. • Lights – Detailed views of every vessel's navigation lights from all angles. • Day Shapes – Learn and identify the correct day shapes for any situation. • Maneuvers – Clear guidance on safe navigation maneuvers. • Morse – Decode Morse signals with ease. • Buoys (IALA) – Understand the International Buoyage System. • Radio – Key radio communication guidelines. • ColRegs – Full text of the International Regulations for Preventing Collisions at Sea (IRPCS). • Quiz – Test your knowledge with interactive quizzes. • Map – Visualize navigation concepts on an interactive map. Access PRO Features Unlock all PRO features with an affordable annual subscription. Your support helps us maintain and improve the app, keeping it the trusted tool for sailors around the world. Join thousands of sailors who trust Marinus ColRegs every day on their iPhone. Whether you're an experienced seafarer or just starting your nautical journey, this is the app you’ve been looking for! For any questions, feel free to contact us at info@marinus.es.

About

Ship Structure

Explore a detailed 3D ship model to learn maritime terminology. Features guided tours, free exploration, and scavenger hunts to test your knowledge. Ideal for anyone interested in naval architecture and ship construction.

Highlights
  • Interactive 3D ship model
  • Guided tours of ship components
  • Free exploration mode
  • Scavenger hunt challenges
  • Industry-standard definitions
  • ARKit integration
  • Intuitive touch interactions
Features
Read full description

Ship Structure is an educational mobile experience that teaches ship terminology using a robustly detailed and fully interactive 3D model. The application contains three experiences: - a guided tour that introduces the user to the components that make up a ship's structure, - a free explore mode that allows the user to explore the 3D model freely by simply selecting the different items to learn more, - a scavenger hunt that challenges the user to find each item listed on the ship components list. App Features: - extremely detailed ship model with over 20 interactive components - clear and concise industry-standard definitions for each component - beautiful graphics and animations - powerful and intuitive touch interactions including seamless model rotation and scaling - easy-to-follow instructions for each experience - powerful, accurate, and target-free model placement and interaction using ARKit - 3D mode as an alternative to ARKit This application was developed at Newport News Shipbuilding, a division of Huntington Ingalls Industries, inc. as a learning tool for the Apprentice School Ship Construction course. However, this free app is an excellent tool for ANYONE that wants to learn about ship structure.

Screenshots

Marinus4 screens
Ship Structure4 screens

Verdict

The call

The clearest difference is rating: Marinus at 4.4 against Ship Structure's 3.7. Marinus also leads on ratings volume (215 vs 3). Ship Structure's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price 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. Marinus sells 1 in-app purchase, starting at $8.99 per year. Ship Structure asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Marinus holds the better App Store score, 4.4 against 3.7. That said, the two scores are not equally well evidenced: Marinus has 215 ratings behind it against 3, so its average is the more settled of the two.

Scorecard6 real differences · 4 level
Marinus versus Ship Structure: the parameters behind the verdict, then further details
ParameterMarinusShip Structure
PriceFreeFree
Rating4.4 (215 ratings) — better3.7 (3 ratings)
Positive reviews65.3% of reviews—
Number of ratings215 — better3
Update frequencyEvery 5 weeks—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.011.0 — better
Further details — not scored
Size113 MB97 MB
Age rating4+4+
DeveloperAlejandroHuntington Ingalls

Customer experience

Marinus

All ratings215 ratings
Positive87.0%
Neutral7.4%
Negative5.6%
Written reviews95 reviews
Positive65.3%
Neutral10.5%
Negative24.2%

Ship Structure

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

Bugs and requests

Marinus

Reported bugs

4 issues
  • App not working, ads won't clear
  • App crashes frequently
  • Mistake with sounds
  • App crashes after 10-15 seconds

Requested features

7 requests
  • Settings for Buoyage A & B & combined
  • Search feature
  • Combine sounds and lights
  • Add tides information
  • More free version functionality
Show 2 more
  • More detail in maneuvers section
  • Lights with silhouette and head-on/stern-on views

Ship Structure

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Marinus

Subscriptions1
  • Marinus PRO3 Days trial$8.991 Year
None

Ship Structure

No in-app purchases

Questions

Is Marinus free?
Marinus is free to download, with in-app purchases available.
Is Ship Structure free?
Ship Structure is free to download, with no in-app purchases.
Which has better reviews, Marinus or Ship Structure?
Marinus is rated higher. Marinus averages 4.4 out of 5 from 215 ratings, while Ship Structure averages 3.7 from 3 ratings.
Do Marinus or Ship Structure have ads?
Marinus shows ads; Ship Structure does not.

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