The most useful thing about this app is that it can be used in any room of an event, so you don't have to worry if there are people with hearing problems or not! It's also easy enough to use by anyone who has some experience using their phone/tablet devices as they're very intuitive (I had no trouble figuring out how things work). I didn't like having to pay extra money when purchasing tickets through them because we were charged more than what was listed online but overall everything worked well together. We've been able to keep our guests safe from loud noises during presentations without turning down volume too much which helps everyone feel comfortable at all times while still being heard clearly throughout each session.