Smooth Open Street Maps for the iPhone

detrow writes: A number of projects are working on bringing a smooth Open Street Maps Viewer to the iPhone. Where smooth means, as smooth as the Google Maps application. Route-Me is one of them (New BSD License, complete Objective-C native code).
The GPS Mission blog reports that their application (GPS Mission) uses Route-Me and made it to the App Store, as the first application using that OSM component. The map looks real nice and behaves just like Google Maps with all the well known zooming and panning available.
What other iPhone applications exist that feel as smooth as Google Maps but use the Open Street Map?