Best logging app/datafield

No idea Mike, but Andrew's GPSTC Approved works well on my Garmin 255

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decrepit said..
apppro and GPSTC approved both give our divisions, I think waterspeed is more general.

Waterspeed has all the GPSTC divisions as well as quite a few more that are on GPSSS. Probably best to investigate further rather than making uniformed decisions based on what you think. Accuracy is based on the watches GPS capabilities rather than the app, all the apps use the same data from the watch. Even the data coming from the last few generations of Android phones has a high level of accuracy and gives error estimates.

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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.

I suppose I could think about adding these missing divisions (100m/250m/half-hour) . I could add an optional extra page that shows the session best for these three divisions. Similar to the existing optional Best 500m, Best 1km and 10km page. Is that what you want?
Mobzy, People all over the world manage to get my Datafields working. We live less than one hour apart. It shouldn't be that hard to get together one day and sort them out.
Regarding accuracy all apps should be the same. The important thing is that the watch is set up correctly and worn correctly. So no battery saving gps modes, Multiband must be turned on and no dodgy watch protectors that cover the GPS anttenna. The GPS Satellite signals have travelled 20,000 km to reach your tiny watch antenna, don't block them in the last 1cm!

start by reading and following the instructions, and if you get stuck ask for specific help

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powersloshin said..
start by reading and following the instructions, and if you get stuck ask for specific help

Surely reading the instructions is a last resort. Better to ask questions on SB first!
Here are the instructions, just in case anyone is interested.
www.haigh.id.au/GPSTC.htm