The app is made for use in emergency situations. You can send text data over CB, FRS, ham radio. The ability to send data when services are down and It requires no special equipment. I think the end goal is devices with this built in, for handheld long range text comms.

https://www.ribbitradio.org 

 very interesting. i just have to find somebody who is equally prepared just in case, which is almost impossible. nobody is prepared where I am.