I rarely make actual phone calls because they usually end up being very one-sided and me going "uh?" "what was that?" "bananas got hairy legs? what?" and with good friends and family, this is fine. However if I need to make a call to, say, AT&T because they screwed up my billing, I have to either have somebody call for me or I turn to this app! IP relay is a federally funded program and it's amazing. Deaf and hard of hearing can just enter a number to call and an operator comes up. The operator will then explain to the other party what IP Relay is and they say what you type and will type back the responses. A must have for the hearing challenged!