RaceBunny — GPX Viewer

Sometimes won't sync, and as someone else mentioned, you can't change the scale of the map during tracking. Nevertheless, it's still the navigation app i most often use.

I've been using Racebunny as a primary GPS tracking app last three years. The main reason is that it's free and works very with Trailrunner, a GPS log management application in Mac OS X. However, racebunny frquently loses GPS signal and crashes. Nevethless, it has been improved steadily. Especially, it becomes credible recently. It means that the developers devoted much of their efforts without direct rewards. I'm very appreciated that.

This app gives me everything I was looking for. It has received some bad reviews but keep in mind the maps are based on Open Street Maps so any error on the map is from that source. As long as you don't try to download excess tiles you will be able to zoom down to street level. Keep your tracks limited and download sequential tracks for long distances and this app will deliver.