Quote from: "jurajs"you can define the contourline steps in phyghtmap easily... and for amount the meters you want to.I've never managed to make the maps myself, I've tried several times. :/
but ! you have to have in mind also that source elevation data is not continuos, therefore it does not make any sense to use lower values than 10 meters. I personally use 20 meter steps for contour lines for 2 reasons. 1) 20 or 25 steps are mostly used out there and its still detailed enough 2) to avoid enormous data generated by pyghtmap for contourlines in the map itself (comparing to 10m step)

And I'll also note that their app requires this as well, they have no OAUTH mechanism in their API that I've noticed, so unlike things like Facebook, Twitter etc that you login to a webpage to authorize an app, you put your credentials directly in the app, be it this app, other Geocaching apps, or the "official" app.