In reply to ianslade:
The guy in the video is always climbing on top rope, he even "sends his project" after all his training on top rope at the end and seems pleased about it. Smacks of some idiots who know nothing about climbing but just think its something else to make an app/gadget for.
I can't see how measuring total height gained and speed is any use to anyone other than maybe speed climbers. Although there seemed to be something in there hinting at gradient there is no accounting for the actual difficulty of the climbing you're doing, simply the raw quantity. according to that, someone doing loads of laps on a 4+ at the wall would be doing loads better than someone doing a few 7b 7c climbs in the same wall, or for that matter an E8 at the crag.
Distance climbed seems such a pointless measurement for climbing, almost as pointless as speed (apart from speed climbing). We log our routes and the grade, no one but kids of on a climbing course brag about how high the climb they did was.
Post edited at 09:23