Boat Instrument vs Sailing Instruments

A Boat Instrument for displaying data in fully configurable Boxes. The data is received via a subscription to a SignalK server. The SignalK server should be fed from your boat's NMEA data. The SignalK server can run on any supported platform, but this is usually a Raspberry Pi running a marine specific OS build.

Plan, race, and sail smarter - all from your iPhone. From the first beat of planning to the final gun, this app puts essential sailing instruments, tactical tools, and live wind forecasts at your fingertips - whether you're cruising the coast or counting down to the start. Instruments • Boat Speed (SOG) – Accurate speed over ground in knots, km/h, or mph • Bearing & Compass – Know your heading and navigate confidently • VMG (Velocity Made Good) – See how effectively you're sailing toward your target Race & Tactics • Race Timer – Easy countdown with auto-start tracking and a large, glanceable display • Waypoint Navigation – Build a library of reusable marks and plot your course in seconds • Wind Forecasts (Premium) – Overlay live wind across your race area, with direction, speed, and gusts shown right on the map. Scrub up to 48 hours ahead to see how the breeze will shift, and choose the forecast model that's most accurate for your waters (UK Met Office, ECMWF, GFS, and more) Track & Review • Route Tracking – Record your GPS track as a GPX file for post-sail analysis • Track Playback – Replay your sail with speed, distance, and your saved marks shown in context • Offline Support – Built for open water; no internet required after install (wind forecasts need a connection) Modern design meets real-world sailing needs - ideal for day sailors, racers, and adventurers. Freemium - no subscriptions, just pay once if you love it: • Use the core instruments for free • Try the race timer, routing, and track recorder twice, then upgrade for unlimited access • Premium unlocks unlimited use plus live wind forecasts • Leave us a review and reset your free trial! This app uses your device's GPS - please ensure your device supports GPS. If GPS updates stop while using the app, try moving your device in large circles to wake it back up. We value your feedback! Share ideas or report issues at yanafloat@gmail.com