Sailing Instruments vs TideRoute Sailing

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

TideRoute Sailing plans and runs your passages, under sail or under power: routing, multi-model GRIB, current and tide, ORC polars, marine charts. Free to start. THE ROUTING, AND WHY IT IS FASTER Draw your route, pick a departure time, run the calculation. The isochrone algorithm looks for the fastest track from your polar, the wind, the swell, the current, the day/night cycle and your motoring rules, while clearing the coast. The calculation advances by successive fronts, discarding the positions with no future. A classic router keeps, per sector, only the one furthest from the start. Upwind that criterion turns against you: the tack that gains towards the mark is not the one that goes furthest away — it gets discarded, and the route commits to a long losing board. Here each front keeps both, the most advanced and the closest to the finish. Measured on Groix-Ouessant, same GRIB and same polar, 100 % sailing: 16 h 57 for 100 miles, against 20 h 40 for 152 miles on a well-established consumer router. Three hours forty less, 18 %. The gap comes from the algorithm, not from the engine. AND FOR MOTORBOATS Raise the "Motor below" setting above any speed under sail and enter your motoring speed: the routing becomes a power calculation, current, tide, swell and coastline included. Against a 5-knot tidal race, an 8-knot motor cruiser stakes its day on the time of passage. THE CURRENT IS PART OF THE CALCULATION Current is not a decorative overlay: it enters the routing. Useful wind is taken in the water frame, and speed over ground follows. • From the Baltic to the Mediterranean, 412 current areas of at least 1 knot, surveyed over a full spring cycle • Fine mesh where current makes the day: our own 100 m model on the English coast, Ifremer 250 m in Brittany and the Channel, BSH on the Elbe and the Belts, Copernicus Marine elsewhere • Tide computed on board: heights, high and low waters, at any date, with no network • Best departure time: a sweep compares the departures in your window and keeps the one that passes the races at the right moment WEATHER AND MODELS • ECMWF and GFS offshore, up to 10 and 16 days • AROME 1.3 km and ARPEGE 0.1° (Meteo-France), ICON-EU 7 km and ICON-D2 2.2 km (DWD) • The finest model for the area is offered; the GRIB follows the extent of your route THE SOLENT, MODELLED FOR ITSELF General-purpose current sources work on a 1.5 km grid — three cells across a channel three miles wide. We built our own: a hydrodynamic model of the Solent, the Isle of Wight, Hurst and the Needles on a 100 m mesh. Developed with AI assistance, from open data, checked against published tide gauge records. Harmonic tide: currents for any date, months ahead. YOUR POLAR, MEASURED UNDER WAY Start from the monohull and multihull library, from the ORC database — thousands of certified boats — or from your own CSV and .pol files. Then build your own at sea. The capture workshop (experimental) fills an angle / wind-speed grid cell by cell as you sail: it waits for a settled regime, discards the minutes after a manoeuvre, flags doubtful cells. Interpolate the gaps, correct by hand, merge outings, export to .pol or .csv. That is your boat, not the sister-ship's. The display then puts your speed against the target: 96 % upwind, you are still looking; 103 %, you are holding the right trim. ON BOARD • Instrument display (NMEA 0183, Signal K) • Alarms: anchor drag, shallow water, strong wind, cross-track error, battery • AIS, tracks, passage table, GPX export • OpenStreetMap and OpenSeaMap charts: marks, soundings, seagrass • Offline: cached charts, GRIB kept on board, tide computed without network • Comparator: overlay several routings and replay them GFS wind routing is free, without limit. Auto-renewing subscription: it renews unless cancelled at least 24 hours before the end of the period, and can be managed in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/