Some of these services are completely siloed, some of them export data as .csv or XML, and some of them actively interact with one another (e.g. Fitocracy imports Runkeeper data, CRONometer can connect to a Withings scale). Each tool works well in its niche, but there's no easy way (yet!) to get all the data in one machine-readable place.
Some of these services are completely siloed, some of them export data as .csv or XML, and some of them actively interact with one another (e.g. Fitocracy imports Runkeeper data, CRONometer can connect to a Withings scale). Each tool works well in its niche, but there's no easy way (yet!) to get all the data in one machine-readable place.