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
I have a TackTick Racemaster, which costs at least $700 or more than a hundred times as much as the HullSpeed app. Yet I find the capabilities of HullSpeed to be indispensable for sailboat racing and just navigating using the moving map feature. I particularly like being able to have speed in 0.01 increments displayed on my iWatch. Speed must be displayed in FRACTIONS of a knot per hour to be useful when racing. Most speed apps only display multiples of 1 knot or mile per hour which is not precise enough. Having a log of the race (voyage) is fun too. Even if you never race you gotta have this app for navigation.
Developer Response
Thank you for your kind review! I built the app to use myself when sailing J80s in Boston Harbor, and I love hearing that other sailors are using it and finding it useful as well. I made it not only because I was sick of subscriptions but like you said, I wanted precision and legibility on the water. It wasn't intended for navigation but I frequently use the distance projection feature to estimate how far I am from shore (remember to use a real chart when trying to avoid shoals etc). I hope it continues to be useful for you and please reach out if you ever encounter any issues or have any feature requests. Thanks again for supporting this small independent sailing app project!
A must-have for Boaters!
Paulb203
Hull Speed is a great app for anyone who spends time on the water. It’s easy to use and really helpful for planning boating trips, tracking your time on the water, and getting useful information for your boat. Simple, practical, and something I’ll definitely be using throughout the boating season. Highly recommend it for fellow boaters!
Developer Response
Thanks for your review! I'm glad you're finding it as useful as I am. My intent was to keep it simple but enable the features that really matter at a reasonable price. Please each out if you ever encounter any issues or have any ideas about how I can make it even better.
Bravo!
Guy in colorado
Exactly what I was looking for! Accurate speed and course on the Apple Watch, no silly subscription, just a clean one-time purchase. And it works amazingly well! Kudos to the dev for building a truly useful Apple Watch app without a lot of cruft or an unnecessary subscription.
Developer Response
Thanks for taking time to write a review. You hit the nail on the head - this is exactly why I made the app! I'm glad it is working well for you.
A super accurate and reliable speedometer
mdm50
This app works great when kayaking even though it’s designed for sailing. It’s better than the app I was paying a monthly fee to use.
Developer Response
Thanks for your kind review. While I designed it for sailing specifically, it's good to hear it works well for Kayaking as well!
Fixed a rare bug which could cause the watch app to crash when trying to recover a voyage that didn't end properly.
Version 1.23
The developer, Catspaw Systems LLC, 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.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Catspaw Systems LLC
Size
34 MB
Category
Sports
Compatibility
Requires iOS 18.6 or later.
iPhone Requires iOS 18.6 or later.
Mac Requires macOS 15.6 or later and a Mac with Apple M1 chip or later.
Apple Vision Requires visionOS 2.6 or later.
Apple Watch Requires watchOS 11.6 or later.
Location
This app may use your location even when it isn’t open, which can decrease device battery life.
Languages
English and 5 more
English, French, German, Japanese, Spanish, Traditional Chinese
