I use my iPhone with an app called Navigone. I believe it cost me $60 but, it works fairly well and provides turn by turn instructions when in any of the driving modes and, although I haven't tested this, when in bike mode. Not a bad solution for $60. Jeff On 2010-04-10, at 11:50 PM, Jeronimo Schöber wrote: > Hello, > currently I am using a trekker (Humanware) for navigation. It works more or > less well. I would like to ask if any body uses their iphone 3gs for gps > based navigation while they are totally blind. > i.e is the google maps app or anything alike accessible on the iphone? > OT : What other solutions do people use? Mobile Geo Loadstone ... Comparison > to trekker? > Thanks > Jeronimo >