Originally Posted by kbarch

Thanks for the elaboration!
So it seems one could luck into a good time, so to speak, when using a phone app to record, but it could work the other way too, couldn't it? So perhaps select results are not so reliable, but on the whole they are reasonable indications of ones placement if one consistently obtains the same time. That's good enough for me. It's not like I'm going to capture a KoM on anything that matters.