SailSpeed vs tcSpeeds
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SailSpeed
Track your sailing speed, heading, and wind data with an outdoor-optimized display. Features a customizable race start timer and route mapping. Analyze your performance post-race.
- Speed and heading tracking
- Customizable race start timer
- Wind direction display (subscription)
- Route mapping overlay
- Outdoor-optimized display
- Bluetooth sensor connection (subscription)
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App for tracking sailing speed and direction, but also the wind. It has a display optimized for outdoor use. When you participate in a sailing race you can use the start timer. The timer can be adjusted to the wishes and needs of the user. It shows speed and heading and keeps track of race. If tracking is started it monitors the average speed, maximum speed, elapsed time and the distance covered. Wind direction is shown in a wind rose (subscripton required). App can make direct connection with a OpenWind BlueTooth sensor (subscripton required). In that case AWA, AWS, TWA and TWS is displayed in the app. It also has the ability to show a map and tracks the route in an overlay when map is selected and race is started. In setup menu landscape can be selected, the display will rotates accordingly, rearranging the speed or map and the heading for optimal visibility during the sail race. In the settings menu the user can select the units, and the scale of the map during the race tracking. Simply place your phone a a water tight casing on board of your boat, setup your settings and press start. The app will automatically keep tracking your progress, showing current speed and heading. Enjoy your sailing, optimize your speed during the race and analyze your data afterwards.
tcSpeeds
This app provides advanced sailing performance metrics using your device's GPS and sensors. It offers detailed speed, wind, and directional measurements, along with a proprietary performance index. Easily track your progress and compare it with others, with zero setup required.
- Advanced speed and velocity measurements
- Proprietary Pilot Performance Index (PPI)
- Wind measurement with optional sensor
- Waypoint navigation and tracking
- Apple Watch extension
- Real-time performance alerts
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tcSpeeds provides advanced knowledge of your current speed, average speeds, maximum speed, directional speeds, velocity made good, wind measurements, and much more. You will be able to measure your performance on a straight course with our proprietary Pilot Performance Index (PPI) computation. Compare how good you are at the controls with your friends or against your autopilot. tcSpeeds stands on its own and does not require external hardware or connections to operate. tcSpeeds uses your device's own internal GPS, accelerometers, and compass. For Wind measurement, you will need to acquire the Calypso Ultrasonic Wind sensor. More sensors will be supported in the future. Easy to use and conceived to minimize operational burden on the user, because we know you have other things to do. Zero setup required: install, launch and tap the start button. Designed for iPhones, and GPS-equipped iPads. CAPABILITIES - Add waypoints on the map - Apple watch extension - auto-VMG Velocity Made Good automatic detection - Add, move, or edit you waypoint location on the map - Cross track to waypoint indicator - Record and save your track - Start Line guide for speed and heading when you race - VMG automatic maximum VMG to waypoint - VMG visual assistant: guides you to the best course to the waypoint on the current tack - Maximum VMG indicator relative to waypoint - Audio alert for Acceleration and maximum speed: get instant feedback for you and your team when you are doing it right - Apple Watch Extension: Speed, Course, VMG, Cross-Track, Display remote control and more - Arrival Time: smart computation using filtered VMG averages - Barometer indicator on supported devices - Pilot Performance Index (PPI) calculation improvement - Speed indicator with color-scaled plot - Directional speed vectors panel with automatic polar graph - Maximum speed keeping - Maximum speed audio and visual alarms - Trip distance recording - Add, move, edit Waypoints - Accurate sub-second timer - GPS status with location accuracy indication - Boxed average speed by timed interval: 10-sec 1-min 10-min 1-hour - Pilot Performance Index (PPI) calculation, measurement, and guide - Target course indicator with automatic and manual fine tuning - Headings, bearings and directional indicators (magnetic/true) - Precise real-time cross track reporting - Course, Compass and proprietary C-Course heading selector - Rapid units selection: metric, nautical and imperial - Situational (non-navigational) map with color-coded speed track - Map display with target course and Look-Ahead-Vector (LAV) - Time and distance to autoscaled LAV endpoint - Velocity Made Good (VMG) relative to Waypoint - Magnetic compass and Course Over Ground (COG) integrated panel - Crab angle and local magnetic declination
Screenshots
Verdict
The clearest difference is rating: tcSpeeds at 4.9 against SailSpeed's 3.8. tcSpeeds also leads on monetization model (free vs free with in-app purchases). On price, review sentiment, ratings volume and update cadence there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SailSpeed sells 2 one-off in-app purchases and tcSpeeds sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
tcSpeeds holds the better App Store score, 4.9 against 3.8. Both are backed by a comparable volume of ratings — 4 and 10 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
SailSpeed ships an update every 14 months, tcSpeeds every 7 months. The most recent releases landed on September 25, 2026 and September 11, 2026 respectively.
| Parameter | SailSpeed | tcSpeeds |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (4 ratings) | 4.9 (10 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 4 | 10 — better |
| Update frequency | Every 14 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 4 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | i-Xp B.V. | transitional continuum |
Customer experience
SailSpeed
tcSpeeds
In-app purchases
SailSpeed
- Plus yearly subscription$4.99
- BLE yearly subscription$24.99
tcSpeeds
- Advanced Performance Features$2.99









