New project: Poor Man's GPS
Out of self-interest, I’ve created an alternative to expensive single-platform navigation applications. I combined the Google Maps API with the HTML5 Geolocation API to create a free cross-platform web-based turn-by-turn navigation application.
Visit the GitHub repository to read more about the project.
I followed the iOS web application guidelines on this application, so you can add the website to the home screen to use the application full-screen (and you’ll also get a nice icon and startup screen).