Ariadne GPS is described as 'map that talks to you. VoiceOver and gives you access to information that are normally unavailable to people using the speech synthesizer and can be therefore especially useful to blind and partially sighted people' and is a GPS Navigation service in the travel & location category. There are four alternatives to Ariadne GPS for iPhone and iPad. The best alternative is BlindSquare. It's not free, so if you're looking for a free alternative, you could try Seeing Eye GPS or Seeing Assistant Move.