I can't think of anything better than skydemon, it does everything for both VFR and IFR flying and as a piece of software is really user friendly. I run it on a £120 Galaxy tablet which has a very good GPS/GLONASS, wifi but no cellular, 7+ hours of battery life and just use it for flying, planning and submitting Flight plans and GAR's. It works throughout Europe, and all for £89 a year. The only problem is I forget how to use my GNS 430 because I use that as the backup to skydemon now.