Pocket FMS user here.
I have to say that I do like the product plus I think it is the one with the best cost effective navdata i have seen. I run mine both of a HTC Smartphone and an old Medion PNA 150, works well on both of them. Detail and data are 2nd to none.
If you go flying high, you need to watch the fact that the airplane profiles and performance calcs are really for flat landers. The program does not provide for complex performance calculations and is based on IAS rather than TAS, which is fine <4000 ft but gets really interesting over the Alps. Took me a while to fiddle the settings to get a representative calc. Until that is fixed, I'll back up my flightplanning with other solutions.
But otherwise, for VFR, I'd hate to be without it. It also does export to Garmin devices, so even as a planning tool for routings only with subsequent transfer to a Garmin, it does the job wonderfully. Much cheaper than the opposition and better in many regards too.