GR Tracker vs SailWatcher
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GR Tracker
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With the GR TRACKER mobile app, participants of sporting events which use services developed by GEORACING can use their smartphones as a GPS tracker. Once started, the GR TRACKER app connects automatically with the GEORACING’s cloud platform and enables to follow in real-time competitors’ performances during the event but also to display indicators such as speed, traveled distance, ranking, timing, GPS positions… Key features of the GR TRACKER app: - Transmits your GPS position in real-time or delayed (if you use WiFi) to GEORACING. - Allows others (organizers, friends, spectators…) to follow the event in live thanks to the dedicated tools developed by GEORACING - Enables comparison between participants - Enables live analysis and post-race analysis at the end of the event Note: To use the GR TRACKER app you must be registered beforehand to an event which uses the services provided by GEORACING. You need to get a code from the organizer in order to use this app. The GR TRACKER app needs an internet connection for the live tracking. Continued use of the GPS running in the background can decrease battery life.
SailWatcher
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SailWatcher is the perfect app for all sailing and boating lovers. Whether you are an expert or a beginner enthusiast, this app will help you plan, monitor and live your adventures at sea to the fullest. Key features: - Track course and key points: While sailing, SailWatcher records the boat's GPS position and that of the points where the shots were taken to retrieve parameters - Practical and fast: To perform the analysis, simply take a shot, select the areas of interest and finally the LUFF. - Share: Once the parameters are calculated, you can share all the information, including the photo and personal notes, by generating a unique URL. - SailWatcher Engine: An algorithm has been developed that, requiring only a few pieces of information from the user, identifies and evaluates the sail's shape lines, returning draft, camber, twist, entry and exit angle. Thanks to an intuitive interface and advanced features, SailWatcher allows you to focus on what you love most: sailing. The app is designed to offer you all the information you need, right in the palm of your hand. Download SailWatcher today and take your passion for sailing to a higher level! --- FREQUENTLY ASKED QUESTIONS - Which parameters does it calculate? SailWatcher calculates the following parameters: camber, draft, twist angle, entry angle, exit angle. It also saves the boat's speed at the moment the photo is taken. - Does it work on every sail? SailWatcher calculates the parameters of all sails with highlighted shape lines. If your sails have visible shape lines, you can use SailWatcher. - Is an internet connection required? SailWatcher is designed to be used on the open sea; it does not require an internet connection, except for some secondary functions (e.g. sharing). - Can I share the obtained data? Yes, via a unique URL. The web page will contain the photo, the shape lines with their parameters, additional data (wind speed, ...) and additional notes entered by the user. - Why can't I retrieve the data? SailWatcher performs a series of calculations to identify shape lines. If you can't retrieve the data for your sail, let us know by email. We will analyze the case and improve the algorithm so that it also identifies your sail.
Screenshots
Verdict
The clearest difference is iOS requirement: GR Tracker at 12.0 against SailWatcher's 16. On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | GR Tracker | SailWatcher |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 16 |
| Further details — not scored | ||
| Size | 22 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Trimaran | Deploynk srl |
In-app purchases
GR Tracker
No in-app purchases
SailWatcher
No in-app purchases









