For those of you that like to do some number crunching on your power stats then the recent update to the Map My Tracks app might interest you. We’ve introduced a summary of your peak power over different time intervals giving you an at-a-glance view of your stats.
In amongst the stats are a few things that get automatically detected from your ride date. FTP, FTHR, VO2max and MAP are all estimated when certain criteria are met. As these are normally best tested in a lab the values are only relevant when the app detects that you have performed at a steady and high state.