the author of this app says:
Here is a program for aviation pilots that offers instant flight planning from AVEDWARE! NavPlan computes complete navigation logs using over 30,000 airports, navaids, fixes, and intersections from the FAA databases. Input actual wind and aircraft performance data and NavPlan computes magnetic heading, ground speed, estimated time enroute, fuel consumption and more!
With NavPlan you can create trips with up to 20 legs. Store up to 10 trips. The values for both individual legs and running trip totals are calculated.
As a bonus, search for IDs for any of the thousands of the private airfields in the FAA database. NavPlan includes the radials and DME for every fix and intersection shown on the VFR and IFR enroute charts. Updates to the AVEDWARE NavPlan databases are available every 56 days.