I frequently use RWGPS for planning my bike rides but don't pay for it (yet!). Curious - is all routing done by graphhopper or do you have some secret sauce on your end? Also graphhopper web has regular bike mode and "racing bike", they tend to come up with different routes, wondering if it's incorporated on your side somehow or if there is a way to influence RWGPS algorithm to be more "road cycling" vs casual cycling (I think that's what graphhopper means by "racing").

We have an update to our web and mobile route planners coming out in the next month that adds more specific bike profiles, including paved/unpaved preferences and cycling infrastructure preferences. Maybe an MTB profile as well.

We use graphhopper for everything, with customized profiles. We add data to the weekly planet PBF files from the OSM project for additional routing data not present in OSM.