Comparison

SailSpeed vs tcSpeeds

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Speed and heading tracking
  • Customizable race start timer
  • Wind direction display (subscription)
  • Route mapping overlay
  • Outdoor-optimized display
  • Bluetooth sensor connection (subscription)
Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

SailSpeed4 screens
tcSpeeds4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
SailSpeed versus tcSpeeds: the parameters behind the verdict, then further details
ParameterSailSpeedtcSpeeds
PriceFreeFree
Rating3.8 (4 ratings)4.9 (10 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings410 — better
Update frequencyEvery 14 monthsEvery 7 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS17.016.6 — better
Further details — not scored
Size4 MB18 MB
Age rating4+4+
Developeri-Xp B.V.transitional continuum

Customer experience

SailSpeed

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

tcSpeeds

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

SailSpeed

One-time2
  • Plus yearly subscription$4.99
  • BLE yearly subscription$24.99
1 purchases

tcSpeeds

One-time1
  • Advanced Performance Features$2.99

Questions

Is SailSpeed free?
SailSpeed is free to download, with in-app purchases available.
Is tcSpeeds free?
tcSpeeds is free to download, with in-app purchases available.
Which has better reviews, SailSpeed or tcSpeeds?
tcSpeeds is rated higher. SailSpeed averages 3.8 out of 5 from 4 ratings, while tcSpeeds averages 4.9 from 10 ratings.
Do SailSpeed or tcSpeeds have ads?
Neither SailSpeed nor tcSpeeds shows ads.
Which is updated more often, SailSpeed or tcSpeeds?
SailSpeed ships an update every 14 months, and tcSpeeds every 7 months. Most recently, SailSpeed was updated on September 25, 2026 and tcSpeeds on September 11, 2026.

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