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Old 26-10-2023, 17:03   #1
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Join Date: Oct 2010
Location: Corona Del Mar
Boat: Trimarans!
Posts: 301
A free True/Apparent calc app with logging for Polars
About 10yrs ago I would regularly write down my BSP AWA and AWS whenever I felt the trim was good, which over time evolved into building a complete polar chart for my trimaran.

Now I asked a computer science student to program a BSP/AWA/AWS/TWA/TWS/VMG (input 3, calculate the rest) calculator. It can act as a poor man’s instrument system (you can often estimate AWA and AWS and BSP), but more usefully, as a logger for the same purpose I logged the data back then.
Click image for larger version Name: IMG_6346.jpg Views: 68 Size: 164.0 KB ID: 282660

It even has a night mode:
Click image for larger version Name: IMG_6347.jpg Views: 63 Size: 263.4 KB ID: 282661

The price is right, all he asks in return is feedback and perhaps a good rating.

iPhone only.
https://apps.apple.com/app/id6451073241
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