App Store
Version 1.1.1 · 2026-06-30
• Added a dedicated catamaran view in the wind diagram • Refreshed app icon and launch screen • Streamlined the interface • Minor fixes and improvements
Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.
Not yet tested.
The store currently lists version 1.1.1, updated 2026-06-30.





Store screenshots supplied by the developer.
Apparent Wind Calculator takes the maths out of one of sailing's most important concepts. Feed in your true wind angle, true wind speed, and boat speed — and instantly see your apparent wind angle and speed, visualised as a live vector diagram.
Whether passage planning, under sail or just getting your head around why the wind always seems to come from forward when you bear away, this app makes it immediately clear.
BOAT POLAR
Load a polar table and the app sets your boat speed automatically based on your true wind angle and wind speed. Built-in presets cover small, medium, and large monohulls and catamarans — or enter your own target speeds for a custom polar. With auto-fill enabled, every diagram you see reflects realistic performance numbers for your boat, not a guess.
FEATURES…
From the developer’s store description.
For developers and the curious
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• Added a dedicated catamaran view in the wind diagram • Refreshed app icon and launch screen • Streamlined the interface • Minor fixes and improvements
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