Why does no-one seem to care about electronic compass?

I am still astonished that I have not yet heard of one satnav app that supports e-compass.

Why?? Satnav apps are next to useless in "Walking" mode without it. Hell, even when driving, it often thinks you are going in the wrong direction due to it having to extrapolate direction from movement vector. Roundabouts are particularly affected too - a true, accurate heading in real-time would greatly improve the reliability of these apps.

When are app developers going to use the e-compass hardware that exists on most android phones to orientate the map to the real world?