goTenna
goTenna turns your iPhone or Android into an off-grid communications tool, enabling you to text & share GPS locations on detailed offline maps, no service required. goTenna is lightweight, weather-proof, and easy to use.
goTenna
goTenna turns your iPhone or Android into an off-grid communications tool, enabling you to text & share GPS locations on detailed offline maps, no service required. goTenna is lightweight, weather-proof, and easy to use.