Routis and IGuidance use the same piece of software. They both are based on NavTech maps which is what makes them kick-*** GPS systems for use in the USA. They are the only maps found in OEM GPS systems, from Acura to Mercedes to Lexus to BMW and also can be found in Alpine Navigation systems. And because they both use Navtech, both are available with 3D view and voice guidance. Just my $0.02
