the author of this app says:
QRouting is a complete planning software for aviation. It does the Weight & Balance calculation, Fuel calculation, and operational flight plan. The Flight Plan is plotted in Oruxmaps (www.oruxmaps.com) and using the phone's GPS we see the route in a moving map. Visit www.qrouting.com for details.
This is the first version. The program has been released on November 14th, 2010. Despite the effort made in beta testing, if you find any error, please report it at firstname.lastname@example.org and will be corrected immediately. Thank you.