Runway Finder is a very handy, unique App for pilots. It is charting app which displays airports with the kind of runway surface you need for planning cross-country flights. For example, if you fly a tail dragger and prefer to land on grass runways, Runway Finder will map out all the known, registered airports with turf runways. If you fly floats, you can see where the seaplane bases are. Likewise for Gliders, Heliports, Gravel, and of course Paved runways. Runway Finder has an internal database of over 50,000 runways. When you find the right kind of airport in the area you want to go, Runway Finder gives you built-in links to several popular websites with detailed airport information. Since runways come and go, you can add your own new or unregistered airports to the database. Runway Finder is international, listing thousands of airports on all continents. What Runway Finder does is very hard to do with other flight planning apps since they don't sort airports by runway surface.