Hey Geowankers, I thought you might be interested to hear I released a GPS app for the iPhone today (www.GaiaGPS.com). Sorry for the spam if this doesn't interest you!
The website talks about all the features, but basically what makes it cool is a few things: 1) We built and open-sourced a Kalman Filter for this project in plain C: http://github.com/lacker/ikalman/tree/master 2) MyTopo maps (only on the iPhone on this app), and of course Cloudmade/OSM maps are included. You can also download maps for offline use. 3) The app includes a great waypoints list, encompassing GeoNames points, USGS points, as well as waypoints and reports we collected from the net (much like this other website we have called www.trailbehind.com). Next, we're planning on building a game layer on top of the app called Gaia Quest, where you will get points for mapping tracks and visiting places. We hope to generate map data to contribute to OSM via this game too. Regards, Andrew -- Andrew Johnson CEO, TrailBehind, Inc. 415-336-1379
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