Question back, VFR or IFR?
In my vicinity RR is quite commonly used among mainly-IFR pilots, but seldom used for VFR. On the contrast Skydemon/Garmin/Jeppesen MFDVFR/the remains of AirNavigationPro users/&Co are hard to estimate in numbers or percentage. Skydemon seems to be very popular as derived from talking about it, but especially for Scandinavia you may have a look at Jeppesen MFDVFR as well. When I was flying up there, I had both Skydemon and Jeppesen MFDVFR on board, as both have their specific advantages.