I cannot overcome the urge to match/exceed benchmarks/round numbers/whatever with a computer on the stem staring at me so I do without. I would use a smartphone app (phone stuffed into pocket or luggage) if I found one I liked but the only one I was close to liking (mytracks) google pulled the plug on and it seems to run worse and worse since then (although I can't tell how much of that is a function of the app decaying vs my phone aging). So I do w/o 'analytics' (beyond 'felt great today!' or 'felt like crap but pushed through today!')