Comparison

Marinus vs Nautical 3D Videos Tutorial

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

Nautical 3D Videos Tutorial

Features
Read full description

Nautical Tutorial 3D is the innovative nautical application that aims to form the indispensable cultural background for future pleasure sailors and the valuable insight for captains from all over the world. A series of detailed 3D video lessons describe all the fundamental principles of navigation at sea and in inland waters. The video lessons are divided into two groups: COLREG and NAVIGATION + IALA COLREG: • Introduction and guidelines • Rules on precedence • On-board lights and light ranges • Position and Service Signals • Ship with limited maneuverability, Ship conditioned by its own draught and Pilot Ship • Fishing ship • Tug and towed ship • Minesweeper, Seaplane, Hovercraft and Ship at anchor • Acoustic signals: Maneuver and Overtaking • Acoustic signals: Fog The International Regulations for Preventing Collisions at Sea (also known as COLREG, COLREGs, RIPA or RIPAM) is a multilateral agreement that establishes the rules of conduct during navigation. Navigation + IALA: • Surveys • Bearing compass • Read and interpret the findings • Graphometer • Ship point • Converging routes • Boe and Mede • Cardinal Buoys and Mede The IALA international maritime system is a signaling system that with buoys and beacons signals navigable canals, natural hazards and other obstacles, safe waters and areas and situations of particular interest. Here are some topics: • COLREG • IALA • boat license • buoy • ship • navigation route • sea • gps • miles • port • propeller • compass and many more ... Download the free app now

Screenshots

Marinus4 screens
Nautical 3D Videos Tutorial4 screens

Verdict

The call

The clearest difference is ads: Nautical 3D Videos Tutorial at none against Marinus's shown. Nautical 3D Videos Tutorial also leads on iOS requirement (9.0 vs 13.0). Marinus's advantage is update cadence (every 5 weeks vs every 21 months). On price, in-app purchases 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 and Nautical 3D Videos Tutorial sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Marinus ships an update every 5 weeks, Nautical 3D Videos Tutorial every 21 months. The most recent releases landed on October 18, 2026 and September 10, 2026 respectively.

Scorecard3 real differences · 7 level
Marinus versus Nautical 3D Videos Tutorial: the parameters behind the verdict, then further details
ParameterMarinusNautical 3D Videos Tutorial
PriceFreeFree
Rating4.4 (215 ratings) — better—
Positive reviews65.3% of reviews—
Number of ratings215 — better—
Update frequencyEvery 5 weeks — betterEvery 21 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.09.0 — better
Further details — not scored
Size113 MB122 MB
Age rating4+4+
DeveloperAlejandroFlavio Losco

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

Nautical 3D Videos Tutorial

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Marinus

Subscriptions1
  • Marinus PRO3 Days trial$8.991 Year
1 purchases

Nautical 3D Videos Tutorial

One-time1
  • Nautical 3D Video Tutorial$26.99

Questions

Is Marinus free?
Marinus is free to download, with in-app purchases available.
Is Nautical 3D Videos Tutorial free?
Nautical 3D Videos Tutorial is free to download, with in-app purchases available.
Do Marinus or Nautical 3D Videos Tutorial have ads?
Marinus shows ads; Nautical 3D Videos Tutorial does not.
Which is updated more often, Marinus or Nautical 3D Videos Tutorial?
Marinus ships an update every 5 weeks, and Nautical 3D Videos Tutorial every 21 months. Most recently, Marinus was updated on October 18, 2026 and Nautical 3D Videos Tutorial on September 10, 2026.

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