Hollr - WorldWide Walkie TalkieBy CriticalRFDirect.com ( $0.99 )
Push to Talk (PTT) instantly with anyone, anywhere, on any connection and almost any communications device. Hollr lets smartphone, PC/Mac, & 2-way radio users like HAM/CB/Police/Fire/EMS/AIR/MIL + enterprise talk worldwide at the push of a button ...