Good and Bad. Kudos for work in progress. Good: motivates improvements by competitors' avgps apps  direct-to useful  inflight lookup of nav  wx  and apt info  excellent with FSX and Stratux adsb. Bad: UI clunky  flight planning unusable. Summary: Useful only for direct-to function and looking up info. Assembling such good data is an achievement  but needs a better framework for the interface. Still  it's better than paper charts or no charts  as it's free! APA excells in its connectivity apps  too. Recommend this over the also free FltPlanGo  which has UI/planning issues  too. For serious flying  rely on superb Foreflight  iFlyGps  or Garmin Pilot  for which you pay reasonable subscription fees. These pros - notably the first two - offer rock solid data and usable interfaces without issues.
June 27 2016