Even prior to its autopilot upgrade, Xavion remains unprecedented. Commercial, military, and general-aviation systems don't offer its sort of guidance—sure, they can find the nearest airport, but they won't tell you if you can make it and the best route to maximize an unpowered glide. Why not? Because creating, testing, and certifying such a system via the FAA's rules takes years and is wildly expensive—sometimes more than a million dollars. Developing the system for iPad, however, circumvents those rules. Meyer's program can't be installed into an aircraft's built-in systems, but it can be used by pilots at their discretion.