The daily topic apple versus the rest of other phones... Yes, android will be on more phones by 2012 then iPhone iOS which is a simple fact because there are many manufactors for android but only on for iphone. And closed versus open system? Yes it's nice to have an open source system, so Linux might be great for you instead of Windows, but for many it's too complicated, same goes for Mac versus PC. Don't let me get into this as the topic was about GPS offline.

I am using my iPhone with "MotionX GPS" and it's great for all you ever wanted, you can record your tracks, one can store offline maps (open street maps & open terrain maps) or if you have a GPRS/3G package you have google maps / satellite view as well. Compass, waypoints, altitude and so on.

Check it on the app store, it has several other great features which I don't have to repeat here. I just got an otter box, but now looking into the best way to fix it on my Suzuki DRZ.

Stefan