TackSense vs TackMath

TackSense is a simple sailing aid that helps you understand your point of sail from wind direction, boat heading, wind speed, and gusts. Enter the conditions, and TackSense shows a clear visual guide for the sailing angle, likely sail position, reefing considerations, and downwind caution zones. It is designed for quick use on deck when you want a fast sanity check without clutter, accounts, or unnecessary complexity. TackSense can help you identify whether you are close-hauled, reaching, running, near the no-go zone, or in a wing-on-wing zone. It also provides practical trim suggestions such as when sails should be trimmed in, eased out, or when a more conservative setup may be appropriate. Features * Point-of-sail calculation from wind direction and heading * Wind speed and gust input * Clear sail-position diagram * Main and headsail setup suggestions * Reefing considerations based on wind strength and gusts * Downwind caution notes, including wing-on-wing and gybe risk zones * Simple terminology for newer sailors * Works on-device * No account required TackSense is not a chartplotter, navigation system, weather service, or replacement for seamanship. It provides general sail-setup guidance based on the information you enter. Always consider local conditions, sea state, crew ability, vessel setup, and official weather information before sailing. Built for sailors who want a fast, visual answer to a basic but important question: What point of sail am I on, and how should the sails roughly be set?

Tack Math is an upwind sailing computer. Lay it flat on the deck of your sailboat, pointing toward the bow, and set the angle to your boat's highest angle of attack upwind (as close hauled as you can get). The app will sense your tack based on the heel of the boat, and plot your heading post-tack. As you come about, you can watch the binnacle (or working compass on the app), and align to the green bearing shown before you tack. (It also lets you take a bearing before you tack of your new heading, by following the green dashed line of sight on the screen. The app also returns heel angle and speed in knots. Offers night mode in red as well.