COLREG 72: Safety at Sea

Developer: Happy Jigsaw

Category: Education

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122.6K installs

3.1K ratings

2.7K monthly active users

$<10K monthly revenue est.

IAP 100% · Ad 0%

Install Trends

Weekly +567

Steady

Monthly +2.2K

Steady

COLREG 72: Safety at Sea Summary

COLREG 72: Safety at Sea is a with in-app purchases Android app in Education by Happy Jigsaw. Released in Dec 2021 (4 years ago). It has about 122.6K+ installs and 3.1K ratings with a 4.80★ (excellent) average. Based on AppGoblin estimates, it reaches roughly 2.7K monthly active users and generates around $<10K monthly revenue (100% IAP / 0% ads). Store metadata: updated May 5, 2026.

Recent activity: 567 installs this week (2.2K over 4 weeks) showing steady growth , and 20 new ratings this week View trends →

Store info: Last updated on Google Play on May 5, 2026 .

SDKs, Trackers & Permissions

App not yet scanned for SDKs.

App Details

Store ID: edu.SmirnovYury.EngVesselLights

First Released: 2021-12-16

Store Last Updated: 2026-05-05

In-App Purchases: Yes

Ads: No

Website: appsforeach.com

App Store

Crawl Status: Success

AppGoblin First Crawled: 2024-08-18

AppGoblin Last Crawled: 2026-05-28

Ads & App-Ads.txt

Ads.txt Last Crawled: 2025-10-13

Ads.txt Crawl Status: Success

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4.8★

Ratings: 3.1K

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Screenshots

App Description

Learn maritime collision rules. Flashcards, quizzes & theory.

COLREG 72 is a complete study and reference app for the International Regulations for Preventing Collisions at Sea. Built for maritime students, merchant navy officers, yacht captains, and anyone preparing for a maritime exam.

WHAT IS INCLUDED

- Flashcard System — Card-based learning tied directly to COLREG 72 paragraphs. Review each rule at your own pace and track which cards you've mastered.

- Interactive Quizzes — Test your knowledge with multiple-choice quizzes. Instant feedback, answer statistics, and progress tracking help you focus on weak areas.

- Theory with Explanations — Full COLREG 72 theory content broken into digestible sections. Detailed explanations make complex navigation rules easy to understand.

- Sound Signals — Audio playback for all mandatory sound signals. Learn to recognize horn sequences by ear, not just by text.

- Tablet & Phone Support — Optimized for both phones and tablets. Study comfortably on any device.

- Multi-Language — Available in English, Russian, Spanish, and French.

WHO IS THIS FOR

- Maritime students preparing for COLREG / seamanship exams
- Professional navigators refreshing collision avoidance rules
- Yacht skippers and sailing enthusiasts studying COLREG
- Anyone working toward an offshore or coastal qualification

FREE & PRO

The free version includes core flashcards and quizzes supported by ads. Upgrade to Pro to remove all ads and unlock the complete theory library, full quiz bank, and sound signals content.

Download COLREG 72 and start mastering the rules today.

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Support: smir1986@gmail.com