Marinus vs KnotWright

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.

KnotWright is an offline, animated knot trainer built for learning by doing. Open a knot and scrub its hand-authored tying animation forward or backward until each turn and tuck makes sense. Ten core knots are free, along with a five-item knotbook for your own notes and tags and a three-card drill taster. The one-time KnotWright Pro unlock adds sailing, climbing, and angling packs for 24 knots in total, the full drill with saved mastery and streaks, an unlimited knotbook, an angling trip log, printable practice cards and knotbook sheets, and mastery-history CSV export. There is no subscription. No account or sign-in is required, and there is no bee2.io analytics or advertising SDK. KnotWright shows no ads. KnotWright Pro unlocks additional features only. Everything you save stays on your device. KnotWright is for general education and hobby practice. It is not certified climbing, rescue, marine, arborist, rigging, or life-safety instruction. Obtain hands-on training and use rated equipment for safety-critical work.