mikey100 said..
Sorry if this has been covered within other threads, but which of these is most accurate for a Garmin 255m in your opinion/s?
AP Pro, GPSTC Approved, Waterspeed or another?
Cheers.
accuracy is mostly baked into the watch (excellent on a Garmin 255), and logging apps/datafields generally record (log) what the watch is sensing and give you both on-the-water and summary (after-session) feedback.
if what you are doing is GPSTC, stick with
twonder's excellent datafield implementation. it gives by far the best on-the-water real time feedback of the three options you mention. in addition, you get a very good session summary results screens in the GPSTC categories without having to go off-watch.
AP Pro's on-the-water feedback is not as handy due to somewhat crowded fields and smaller numbers, but the results summaries incorporate the divisions of GP3S that aren't included in GPSTC competition.
Waterspeed has the least useful on-the-water feedback – unless the time of day and your heartrate are the most important things to you. if you want a somewhat usable results summary, you have to go the app on your phone or the webapp, where you will have a lot of divisions that will mostly cover GPSTC/GP3S divisions and a few more, but they are a bit curious, for lack of a better word. i've seen discrepancies on what the phone app and web app report for the same session, some of your results will be rounded to one decimal place, while others display two… and the 5x10 session averages seem to find extra fast runs that the other apps (or an analysis tool like
boardsurfr's excellent GPS Speedreader) do not.
for those of us who do both GPSTC/GP3S, in an ideal world
twonder would add an optional screen with the missing divisions (100m/250m/half-hour) and
boardsurfr would similarly add those to the summary section.
