Comparison

Sailing Analyzer vs NSJ Tracker

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

Head to head
About

Sailing Analyzer

Features
Read full description

[Analysis App of the Sailors, by the Sailors, for the Sailors] Taking advantage of my experience as a sailing athlete and coach, I have created an app that can be used to improve sailing skills. I hope this app will help improve the quality of practice. What the numbers alone cannot show, you can look back on with photos and videos tied to your track. [How to use] - Record the wake using the GPS sensor of your smartphone. Bring your smartphone to the ship and take measurements. - The app will automatically analyze the measured wake. - Import the photos and videos you took during practice, and keep them tied to the moment you were sailing. - Check the analyzed results, improve tunings, and use it for the next practice! [Main functions] - GPS measurement function - Analysis function (time, distance, speed, number of tacks, number of jibes, sailing angle against the wind, calculation of VMG) - Totals across four groups: upwind/downwind by port/starboard - Automatic wind direction estimation (filled in when you finish measuring, and you can correct it by hand) - Measurement data display function (leg list, map display, graph display, estimated wind direction at each tack) - Graph types (speed, sailing angle and VMG over time; speed, VMG and time spent by angle) - Measurement data editing function (wind information, boat information, notes, GPS data range, division of measurement data) - Photo and video function (linking to logs, adjusting the capture time, capture points on the map, video trimming) - Shooting with speed and heading burned into the photo or video - Recording of boat information (boat information, tuning information, setting photos) - Comparison function with past records and teammates (up to six logs, synchronized playback) - Exporting and importing logs as CSV - Unit settings (distance: m/km/mi/nm, speed: m/s/km/h/mph/knots. Wind speed can be set separately from speed) [Disclaimer] - Since this application operates with GPS, the accuracy may deteriorate depending on the surrounding radio wave conditions and the performance of the terminal. - Estimated wind direction is automatically input. If necessary, correct the wind direction manually. - Measurement data, along with imported photos and videos, is saved inside the smartphone. Please note that data cannot be taken over when changing smartphones. - Do not operate this app while sailing because it is dangerous. Only shoot when it is safe to do so. - The app developer is not responsible for any disadvantages such as accidents or injuries while using this app. Please be sure to use this at your own risk.

About

NSJ Tracker

Features
Read full description

GPS tracker app for yacht racing. Sends real-time position, speed, and course data to the race management server. ヨットレース用GPSトラッカーアプリ。位置・速度・針路データをリアルタイムでレース管理サーバーに送信します。

Screenshots

Sailing Analyzer4 screens
NSJ Tracker4 screens

Verdict

The call

The clearest difference is ads: NSJ Tracker at none against Sailing Analyzer's shown. NSJ Tracker also leads on update cadence (every 6 days vs every 2 months). Sailing Analyzer's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Sailing Analyzer ships an update every 2 months, NSJ Tracker every 6 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 2 level
Sailing Analyzer versus NSJ Tracker: the parameters behind the verdict, then further details
ParameterSailing AnalyzerNSJ Tracker
PriceFreeFree
Update frequencyEvery 2 monthsEvery 6 days — better
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.6
Further details — not scored
Size53 MB0 MB
Age rating4+4+
DeveloperShota UtsumiKeita Yukinori

In-app purchases

None

Sailing Analyzer

No in-app purchases

None

NSJ Tracker

No in-app purchases

Questions

Is Sailing Analyzer free?
Sailing Analyzer is free to download, with no in-app purchases.
Is NSJ Tracker free?
NSJ Tracker is free to download, with no in-app purchases.
Do Sailing Analyzer or NSJ Tracker have ads?
Sailing Analyzer shows ads; NSJ Tracker does not.
Which is updated more often, Sailing Analyzer or NSJ Tracker?
Sailing Analyzer ships an update every 2 months, and NSJ Tracker every 6 days. Most recently, Sailing Analyzer was updated on October 27, 2026 and NSJ Tracker on October 31, 2026.

Other comparisons