I would imagine this idea while in theory is good, but why spend all that time making an app for something i can just open a new tab on my computer and go to the website? After all, i dont see the point in seeing which servers are open on your mobile device if you already have access to a computer. On the other hand, if ads were to run on this app, and a "pro" version could be downloadable for money, it could be a decent way to make a miniscule amount of cash. Even with that said, i personally would not download an app for a dollar if i could do it for free. Unless of course, there would be some sort of bounty reward for buying the pro version.
And that comes from an apple ipod/iphone/mac/macbookpro fanboy. Happy days.