Audio game app for blind people

Bob Smolenski says: "I've released a new audio game app for blind and visually impaired. Open Field Echo Sounder uses GPS on your iPhone or Android. Walk to the center of an open field and six virtual targets will be arranged around you. Echo locate them using headphones to determine direction. Sighted folks can play it also ;)"

Open Field Echo Sounder: $2 on iOS and Google Play