Best Signal Flags alternatives: apps like Signal Flags

10+ similar apps compared and reviewed

4.1 avg rating
3 free apps
Updated October 2026

Whether you want more options like Signal Flags or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.

Top Alternatives to Signal Flags

5.0(1 ratings)
$1.99
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Explore daily events from World War Two with detailed descriptions and interactive maps. Discover where historical events occurred and access further information through Wikipedia links. The app's data is sourced from a community-driven project, with new entries added regularly.

ICC Certificate of Competence#2

ICC Certificate of Competence by The Other Hat

For Pleasure Craft Operators
Strong Contender
🔍 Reference
0.0(0 ratings)
$4.99
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This app serves as a comprehensive learning and revision tool for the International Certificate of Competence (ICC) test. It covers regulations, safety, navigation, and practical skills required for skippers in many European countries. Prepare for your ICC test with detailed syllabus explanations and self-assessment quizzes.

Navigation Rules#3

Navigation Rules by Calculated Industries

Boating Regulations
Worth Considering
🔍 Reference
4.8😊(386 ratings)
$3.99
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Access the complete International Regulations for Preventing Collisions at Sea (COLREGs) and Inland Navigation Rules. This app provides a searchable, annotated version of boating regulations, ideal for quick reference and sharing information.

What We Love

  • 👍 Easy to navigate and user-friendly interface
  • 📚 Comprehensive reference material for navigation rules
  • 🚀 Quick access to rules on-the-go
  • 🎓 Excellent study tool for maritime exams and licenses
  • 📖 Well-organized table of contents and structure
  • 🖼️ Visual diagrams and light illustrations helpful for understanding
  • 🔍 Good search functionality
  • ⭐ Reliable and accurate content matching official rules
  • 📱 Convenient portable alternative to physical books
  • 🎯 Bookmarking and favorites feature

Room to Improve

  • 🐛 Poor navigation between rules requires multiple menu presses
  • 📄 Walls of text with limited visual content
  • 🎨 Inconsistent formatting in some sections (e.g., 8F(iii))
  • ❌ Limited additional features beyond basic text content
  • 🔄 Clicking definitions forces users to search for original page again
  • ⚠️ Misleading app description regarding graphics and features
  • 🌍 No clear differentiation between international and inland rules
  • 📊 Lacks interactive elements like quizzes or tests

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4
Navigation Rules Pro
Navigation Rules Pro
Navigation Rules Pro
Boating Regs and References
$4.99

This app provides comprehensive boating regulations and reference materials, including international and inland navigation rules, sound and light signals, and communication information. It features quick references, calculators, and unit conversions for boaters.

International and Inland Navigation RulesSound and Light Signals Quick ReferenceAids to Navigation (AtoN)
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5
Collins Spanish-English
Collins Spanish-English
Collins Spanish-English
Bilingual dictionary and verbs
$17.99

Access a comprehensive bilingual dictionary with over 100,000 translations and a powerful verb conjugator for Spanish and English. Includes usage notes, examples, and a number translator, all available offline.

100,000+ translationsVerb conjugator for thousands of verbsUsage notes and examples
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6
Bird Call Xeno - Bird Songs
Bird Call Xeno - Bird Songs
Bird Call Xeno - Bird Songs
Xeno-Canto Bird Calls & Guide
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Access a vast library of bird calls and sounds from a global open-source database. Search, stream, and download recordings for offline identification and personal audio collections. Customize your experience with themes and playlists.

Search bird calls by common or scientific nameStream and download recordingsOffline listening capabilities
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7
Shellback
Shellback
Shellback
by Program Executive Office for Enterprise Information Systems, Sea Warrior Program
Free

This app provides US Naval Surface Force personnel with offline access to essential information. It includes manuals and resources for administration, medical, operations, personnel management, safety, and navigation rules. Content is updated annually for relevance.

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8
Naval Library & Modern Warship
Naval Library & Modern Warship
Naval Library & Modern Warship
Fleets, Submarines & Missiles
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Access comprehensive data on global navies, including warships, aircraft, and equipment. Enhance situational awareness with detailed specifications, operational status, and multimedia resources. Ideal for defense industry professionals and enthusiasts seeking in-depth naval intelligence.

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9
Birds of Patagonia
Birds of Patagonia
Birds of Patagonia
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An essential guide to birds in Patagonia, featuring a step-by-step search function to identify spotted birds. Each species includes distribution maps, descriptions, photographs, and conservation status in multiple languages.

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10
VHF DSC Radio
VHF DSC Radio
VHF DSC Radio
Essential quick reference
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This app provides a comprehensive guide to leisure craft VHF DSC radio systems, covering analogue and digital functions. It's an essential reference for seafarers preparing for the Short Range Certificate and understanding GMDSS, with practice quizzes included.

Analogue and digital radio functionsGMDSS, EPIRBs, SARTs, and Navtex explainedShort Range Certificate preparation
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