Comparison

Waterspeed Sailing GPS Tracker vs NK Logbook

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

Head to head
About

Waterspeed Sailing GPS Tracker

Track your performance across over 30 water sports, including sailing, wingfoiling, and kayaking. Analyze speed, distance, wind, and more to understand your progress and improve your skills. Plan your sessions with integrated forecasts and stay safe with live tracking.

Highlights
  • Track 30+ water sports sessions
  • Analyze speed, distance, wind, and performance metrics
  • Log gear and equipment usage
  • View progress trends over time
  • Live safety tracking
  • Integrated wind and weather forecasts
  • Connect with Strava and GPS-Speedsurfing.com
Features
Read full description

Waterspeed is a GPS tracker for sailing, wingfoil, windsurf, SUP, kayak and 30+ other water sports. Record every session on the water and see your speed, distance and track in detail. WIND ALERTS AND FORECASTS • Wind alerts: pick when you want to head out, and Waterspeed tells you when the wind is right, with time to get ready (Pro) • Wind, weather and tide forecasts for the spots near you (Pro) • Wind history and spot conditions (Explore+) MEASURE • Speed, max speed, average speed, distance and duration • Best speeds over 2 s, 10 s and 500 m (Pro) • Your track on the map, with speed shown along the route • Heart rate from your watch, wind, strokes and foiling time • Tacks and gybes analysis, foiling efficiency (Pro) • VMG (velocity made good) and true wind angle (Ultra) • Polar charts and performance against target speeds (Ultra) • Upwind/downwind and port/starboard analysis, legs and runs, gains and losses in distance and angle (Ultra) • Countdown timer for race starts (Pro) • Session history and progress over months and seasons WORKS WITH YOUR DEVICES AND APPS • Apple Watch: record your session right from your wrist • Garmin, Coros, Suunto and Vakaros: your sessions sync into Waterspeed automatically • Strava and GPS-Speedsurfing.com: send your sessions there automatically (Pro) SPORTS Sailing (dinghy, keelboat, catamaran), wingfoil, windsurf, kitesurf, foil, efoil, pumpfoil, SUP, kayak, canoe, downwind, powerboat and 30+ water sports. IMPROVE • Log your gear (boards, sails, wings, foils, boats) and compare sessions • Challenges and leaderboards with the community • Share sessions with friends LIVE SHARING • Live location sharing, so people on shore can follow you (Pro) PLANS Free to download and record. Pro unlocks full stats, history and sync. Ultra adds advanced sailing and racing analysis: VMG, true wind angle, polars, legs and runs. Waterspeed Pro and Ultra are monthly or yearly subscriptions. Payment is charged to your Apple account and renews automatically unless canceled at least 24 hours before the end of the current period. One subscription works on all Apple devices linked to your iCloud account. Waterspeed can export activities to Apple Health. We love hearing from the community: support@waterspeedapp.com Terms of Service: https://www.waterspeedapp.com/terms Privacy Policy: https://www.waterspeedapp.com/privacy

About

NK Logbook

This app pairs with compatible GPS devices to import, review, and analyze session data. It also streams live performance measurements for coaches and spectators, offering real-time insights into rowing performance and location.

Highlights
  • Import session data from compatible devices
  • Review and analyze boat metrics and stroke profile
  • Stream live performance measurements
  • Real-time location tracking for safety and spectator viewing
  • Team management for coaches and athletes
  • Compare live data from multiple boats
Features
Read full description

NK LiNK Logbook pairs with your CoxBox GPS & SpeedCoach GPS/SUP/OC with Training Pack to (1) import session data for review and analysis and (2) stream live performance measurements to NK's public online viewer at logbook.nksports.com. QUICK AND EASY TO STORE SESSION DATA Pair with your NK device using Data LiNK mode to import session memory to your secure account. REVIEW AND ANALYZE SESSION PERFORMANCE Quickly find and select sessions from the calendar view. Review your course overlayed on a map. Check boat metrics for any or all of the session. Get a clear understanding of your rowing style by viewing your stroke profile. QUICK AND EASY TO STREAM LIVE DATA Pair with your NK device using Live Stream mode. Keep the paired phone and NK device together on the water while training or racing. SAFETY ON THE WATER Coaches, family, friends and spectators can view your location on the map viewer. Just scan the map viewer or boat list to locate any streaming boat. TEAM SUBSCRIPTIONS Assign Coaches and Athletes to your team for easy data sharing Privately stream live performance data to your assigned team coaches Simultaneously compare live streaming data from multiple boats ESSENTIAL COACHING TOOL Coaches can view real-time location and performance measurements during workouts in order to provide more effective feedback. All performance measurements in the NK device are available in the live viewer, so coaches can select which measurements to monitor during each session. IMPROVED SPECTATOR EXPERIENCE Spectators and coaches can view real-time position and performance measurements during an event (please check with the regatta officials regarding the legality of cell phone use during a race). With all entries streaming their data, spectators can see who's ahead by how much - all in real-time! REQUIREMENTS - Compatible with CoxBox GPS, with firmware version 1.00 or higher. - Compatible with SpeedCoach GPS 2, SpeedCoach SUP 2 and SpeedCoach OC 2. Training Pack is required, with firmware version 2.19 or higher. - Mobile device must have Bluetooth 4.3 or higher, and must have Bluetooth peripheral service. - Mobile device must have cellular service. - Mobile device must have iOS 10.0 or higher (iPad 4 and higher/ iPhone 5 or 5c and higher)

Screenshots

Waterspeed Sailing GPS Tracker4 screens
NK Logbook4 screens

Verdict

The call

The clearest difference is rating: Waterspeed Sailing GPS Tracker at 4.6 against NK Logbook's 3.8. Waterspeed Sailing GPS Tracker also leads on update cadence (every 10 days vs every 4 months) and ratings volume (1.1K vs 12). NK Logbook's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and monetization model 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. Waterspeed Sailing GPS Tracker sells 18 in-app purchases, starting at $2.99 per month and NK Logbook sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Waterspeed Sailing GPS Tracker holds the better App Store score, 4.6 against 3.8. That said, the two scores are not equally well evidenced: Waterspeed Sailing GPS Tracker has 1.1K ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 85% of Waterspeed Sailing GPS Tracker's written reviews are positive against 63% of NK Logbook's.

UpkeepUpdate frequency

Waterspeed Sailing GPS Tracker ships an update every 10 days, NK Logbook every 4 months. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

Scorecard5 real differences · 5 level
Waterspeed Sailing GPS Tracker versus NK Logbook: the parameters behind the verdict, then further details
ParameterWaterspeed Sailing GPS TrackerNK Logbook
PriceFreeFree
Rating4.6 (1.1K ratings) — better3.8 (12 ratings)
Positive reviews84.7% of reviews — better62.5% of reviews
Number of ratings1.1K — better12
Update frequencyEvery 10 days — betterEvery 4 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size144 MB57 MB
Age rating+44+
DeveloperWaterspeed Technologies LimitedNielsen-Kellerman Co.

Customer experience

Waterspeed Sailing GPS Tracker

All ratings1,113 ratings
Positive91.7%
Neutral2.3%
Negative5.9%
Written reviews603 reviews
Positive84.7%
Neutral5.1%
Negative10.1%

NK Logbook

All ratings12 ratings
Positive66.7%
Neutral8.3%
Negative25.0%
Written reviews8 reviews
Positive62.5%
Neutral0.0%
Negative37.5%

In-app purchases

18 purchases

Waterspeed Sailing GPS Tracker

Subscriptions18
  • WS Monthly subscription14 Days trial$2.991 Month
  • Monthly14 Days trial$2.991 Month
  • Waterspeed Pro Monthly$3.991 Month
Show 15 more
  • Monthly Subscription14 Days trial$3.991 Month
  • Monthly Plan14 Days trial$4.991 Month
  • Monthly Plan14 Days trial$5.991 Month
  • WS Quarterly subscription14 Days trial$7.993 Months
  • Waterspeed Ultra Monthly1 Month trial$9.991 Month
  • Waterspeed Ultra Monthly14 Days trial$12.991 Month
  • Waterspeed Ultra Monthly$19.991 Month
  • WS Yearly subscription14 Days trial$29.991 Year
  • Yearly Subscription14 Days trial$29.991 Year
  • Waterspeed PRO Yearly2 Months trial$29.991 Year
  • Yearly Subscription$29.991 Year
  • Yearly Plan14 Days trial$59.991 Year
  • Waterspeed Ultra Yearly1 Month trial$99.001 Year
  • Waterspeed Ultra Yearly14 Days trial$149.001 Year
  • Waterspeed Ultra Yearly14 Days trial$199.001 Year
4 purchases

NK Logbook

Subscriptions4
  • Monthly Coach Subscription14 Days trial$9.991 Month
  • Monthly Team Subscription14 Days trial$74.991 Month
  • Annual Coach Subscription14 Days trial$99.991 Year
Show 1 more
  • Team Yearly Subscription14 Days trial$749.991 Year

Questions

Is Waterspeed Sailing GPS Tracker free?
Waterspeed Sailing GPS Tracker is free to download, with in-app purchases available.
Is NK Logbook free?
NK Logbook is free to download, with in-app purchases available.
Which has better reviews, Waterspeed Sailing GPS Tracker or NK Logbook?
Waterspeed Sailing GPS Tracker is rated higher. Waterspeed Sailing GPS Tracker averages 4.6 out of 5 from 1.1K ratings, while NK Logbook averages 3.8 from 12 ratings.
Do Waterspeed Sailing GPS Tracker or NK Logbook have ads?
Neither Waterspeed Sailing GPS Tracker nor NK Logbook shows ads.
Which is updated more often, Waterspeed Sailing GPS Tracker or NK Logbook?
Waterspeed Sailing GPS Tracker ships an update every 10 days, and NK Logbook every 4 months. Most recently, Waterspeed Sailing GPS Tracker was updated on November 1, 2026 and NK Logbook on October 29, 2026.

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