Boat Speedometer: Hull Speed1.24 - App Store

HullSpeed is a clean, highly legible sailing and boating speedometer with Apple Watch and Live Activity support. It works for all activities but is designed around sailing.

Designed for quick speed checks while underway, HullSpeed gives sailors and boaters a simple, reliable marine speed readout on Apple Watch and iPhone.

HullSpeed keeps the focus on what matters: your current BOAT SPEED. The display is large, simple, and easy to read at a glance, making it ideal for sailing, dinghy racing, cruising, or any time you want a straightforward marine speedometer without clutter. A small trend chart helps you quickly see the impact of trim changes.

HullSpeed also records your voyages so you can review your time on the water later. Saved voyages include speed, distance, duration, average speed, maximum speed, route history, and exportable CSV data.

In addition to sailing data, HullSpeed also withs with Apple Health to measure your heart rate via an Apple Watch so you can keep track of your activity at sea.

Features:

* Large, high-contrast live speed display.
* Designed for quick wrist checks on Apple Watch, or quick glances at your phone.
* Live Activity support on iPhone.
* Record sailing voyages from iPhone or Apple Watch.
* Track distance, duration, average speed, and max speed, and heart rate.
* View saved route history.
* Export voyage data as CSV or KMZ.
* Unlock continued use with a one-time in-app purchase.
* Includes 3 free trial voyages. If you like it you can purchase for life. No subscription or account required.
Privacy Policy: https://www.catspaw-systems.com/PrivacyPolicies/HullSpeedPrivacy.html

Version History Added Korean localization. 1.24 Oct 7 Fixed a rare bug which could cause the watch app to crash when trying to recover a voyage that didn't end properly. 1.23 Sep 21 •iOS 27 and WatchOS 27 compatibility improvements. 1.22 Sep 18 iOS 27 compatibility update 1.21 Sep 16 In this version I added some minor and conservative GPS smoothing. I also stopped interpolating the last known speed when GPS data is missing and instead show –.
These changes will reduce the chances that an incorrect speed measurement will affect your voyage's max speed, and will also prevent a higher speed is stuck on screen after stopping. 1.20 Sep 11 This update improves the voyage log view:
•Better voyage details
•Better share images
•More organized voyage list 1.19 Sep 8 Improvements to free mode layout 1.18 Aug 22 •Revised the watch layout to increase readability on smaller Apple Watches and to make the voyage time easier to read for everyone.
•Revised the voyage path color scheme such that green = fast and red = slow.
•Revised the speed trend chart so that the color matches the voyage path color. 1.17 Aug 21 Fixed a bug that could prevent your location and speed from updating on the map view. 1.16 Aug 17 •Fixes for several rare watch app crash issues. 1.15 Aug 6 •Improved the live map view - fixed a bug which could cause the wrong boat orientation to show when rotating the map.
•Improved phone/watch sync when sailing without your phone present. 1.14 Aug 6 In addition to exporting raw data, you can now tap the share button in the upper right corner to share a voyage summary image with a friend. 1.13 Jul 9 •Cleaned up about section.
•Added some links to other apps I made that sailors might find interesting. 1.12 Jul 3 Improved the "Projected location" feature on the live map map. 1.11 Jun 27 Maintenance release 1.10 Jun 20 •Added the ability to project your future location on the realtime map based on current speed and heading. 1.9 Jun 15 •Added the ability to project your future location on the realtime map based on current speed and heading. 1.8 Jun 14 Added GPX export
Improved the user experience when deleting a voyage 1.7 Jun 3 Performance improvements related to loading and saving voyage data. 1.6 May 24 Hull Speed is now localized for French, German, Spanish, Japanese, and Chinese (Taiwan) 1.5 May 23 •Added a live view while underway as the 2nd page.
•Added a tooltip for first time users describing how to navigate between pages and end a voyage. 1.4 May 20 •Performance improvements
•You can now export voyages in KMZ format.
•Improved the format of the live activity. 1.3 May 18 Added the ability to change speed and distance units. 1.2 May 17 •Moved heart rate to top of watch UI.
•Bug fix related to payment screen.
•More generous trial period, your trial voyages only count if they are 0.25 nautical miles or more (so no more burning a trial voyage by testing indoors etc). 1.1 May 13 1.0 May 12