Yes Mark, both android apps show distance travelled since reset. I would have to borrow my sons iPad or iPhone to compare with them. But I went out this morning and tested the following against the Jones counter on the bike:
Jones counter (no SCPF): 4.5131km
Garmin Etrex H trip odo: 4.48km ie -0.7%
Garmin Etrex H smoothed: 4.481km (points recorded at 1 sec interval and afterwards smoothed by GPS Utility with the maximum off track distance in the compression filter set to 2m.)
GPS logger app display : 4.57km ie + 1.3%)
GPS Stopwatch app : No record. Cumulative distance and gps track lost when talking photos & videos of counter reading at about 2 km. Had to restart the app.
It is possible that if I play with the GPS logger app settings I can reduce the +1.3%. I am recording every second and there are various options that need to be investigated. There is a distance filter and an accuracy filter, but from the description it is not obvious that these will help.
Any one of these devices will give a a sufficiently accurate indication of an approaching mile split that I could start monitoring the counter reading in the camera mode, and record the route well enough to identify roads so that a course map can be prepared.
The main thing I am having to learn and practice is switching between applications without messing up the recording of data. I am rather annoyed that for the second time in two days, I have lost data with the GPS Stopwatch app. I would prefer to use it since it has nice chunky screen display which I dont absolutely need glasses to read. The good thing from this mornings test was the videos and photos of the counter readings at the start/finish, and also on the calibration course worked perfectly.
May be I will end up building my own GPS recording app in order to closely match my needs.