You need to be using a locked GPS signal, text to speech you need TTS Extended service, search market or http://goo.gl/UpwSy
Problems? send mail to firstname.lastname@example.org
* some language labels.
* added 100/100 and 100/50 intervals
* max distance every 2 sec is 40mts, to improve accuracy
* removed required permissions (Internet, Coarse and Mock Location)
* small UI improvements
Content rating: Low Maturity