Used this app and the website for tracking a recent sail race (ALIR) and it is hands down the worst race tracking software and app ever seen. To first use the app, one needs to add the name of the boat then select the race. That process worked fine. However, despite being suggested that the app tracks other boats as well, that was not the case. The app tracks only one's own boat and that's it.
Where the disaster unfolds is on the race website which directs people to another site listed as "good for phones". On the iPhone and the iPad, the site is completely unusable. First, it does not scale to the iPhone screen but essentially shows a PC-sized web page on the iPhone screen. Mobile sites should scale to the smart phone screen size. Second, trying to pinch in and zoom on the race for the ALIR race (either on iPhone or iPad) almost always kicked the map to alternatively, Kansas, northern Quebec, Windsor Ontario, and other remote places including in one instance Venezuela! This problem has been noted by eight friends who tried to follow the race on their mobile device. This was a constant issue noted by all who tried to follow the race.
Also, although the site does show the track of the boat, one cannot replay the track(s) for post race analysis similar to Yellowbrick.
Have not tried the Google Earth plug-in for PC or Mac so cannot comment on that.
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