Even Pulse
Travel
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Turn your boat's true performance into something you can see and feel.
This tool puts a live velocity prediction model in your pocket, so you can explore exactly how fast your boat sails at every angle to the wind, and how trim changes reshape that performance in real time.
WHAT YOU GET
A live polar diagram that redraws itself as you adjust wind speed and sail trim. Watch the curve breathe and shift, with your current boat speed and wind angle marked directly on it.
Instant VMG guidance for both upwind and downwind legs, showing the optimal angle to sail and the target speed you should be hitting, so you always know if you are in the groove or leaving speed on the table.
An apparent wind triangle that shows how true wind and boat speed combine, with a masthead style needle that settles into place just like the real instrument.
A sail trim view with a live cross section of your sail. Adjust draft depth, draft position, twist, and angle of attack, and watch simulated telltales respond exactly as they would on the water, streaming when the flow is attached, lifting when you pinch too high, stalling when you are overtrimmed.
A wind shift plotter for tracking oscillations during a race or practice session. Log readings as you sail and see the median, amplitude, and current laylines update automatically, with lifts and headers shaded for quick reading.
Export a full polar sheet as a PDF or CSV, with target speeds across a full range of wind speeds and angles, ready to print, share with your crew, or study before you head out.
Save multiple boat profiles with your own waterline length, displacement, and sail area, and the model adjusts its predictions to match your specific boat.
WHO IT IS FOR
Built for racers who want to trim to a target, cruisers who want to understand their boat better, and students in a sailing course who want to see the theory behind VMG and polar diagrams come alive instead of staying flat on a page.
A NOTE ON ACCURACY
The velocity predictions are built on a simplified aerodynamic and hydrodynamic model meant for training, trim practice, and building intuition. This is not a certified racing rule measurement tool and it is not a navigation instrument. Always rely on proper navigational equipment and sound seamanship for safety on the water.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Mark Delaiche, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Mark Delaiche
- Size
- 7.3 MB
- Category
- Travel
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Mark Delaiche