MapPocket (iOS) app for $2.99

MapPocket is a quick, convenient and feature-rich way of using maps on the road without an Internet connection. MapPocket main features: You record your own maps - no additional purchases necessary. Access all your favorite maps offline. Maps from 4 major providers (Google, Mapquest, Bing and OpenStreetMap.org). Maps could be saved at multiple zoom levels (not available in MapPocket LITE). Use GPS online and offline to track your current location/distance/average speed. Universal application: specifically designed to work equally well on iPhone/iPad/iPod touch. Easily share recorded maps with all your devices using iCloud or DropBox+