I Phone application for every DJ?

I’ve heard a buzz from multiple people about nitelifeapps.com

Two of my friends have their own applications so fans can follow them. It includes there their schedule, music, twitter, bio and a bunch of other information. They said they got it made online from nitelifeapps.com

I think it’s a great concept I just want some feedback from anyone else out there who has one;

how does the nitelifeapps work?

does it update quickly or does someone have to do it for you?