Port King icon

Port Kingv3.1.0

Released August 18, 2026Major

iOS Android

What changed

  • MonetizationApp transitioned to a free-to-download model
  • ContentBasic manoeuvres, radio reference, and rules are now available for free
  • MonetizationIntroduced Port King Pro as a single-purchase unlock for premium content
  • MonetizationPrevious buyers receive Pro version for free with a restore option
  • New featureAdded Hall of Fame to recognize user suggestions
  • New featureAdded a history log for received messages

Original release notes

Port King is now free.

The basic manoeuvre of every category, the complete radio reference section, right-of-way rules, sea marks, distress signals, all checklists and the entire blog are now available without any purchase.

If you want the full scope, unlock Port King Pro with a single purchase: all 28 manoeuvre videos, flashcard training, the radio message generator and the in-depth articles on Beaufort and sea state.

Bought Port King before? Then Pro is yours for free – the app detects this by itself. If it does not, use "Restore purchases" on the Pro page.

Also new: the Hall of Fame for suggestions we have implemented, and a history of the messages you have received.

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Port King, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Data licensed under CC-BY-NC 4.0