What's the best way to tell if an app is worth buying? I read the reviews, half the people said it's the best thing they ever bought. I think some of them are just friends of the people who made the program. Then the other people say don't waste your money, it doesn't work or something like that. then I think those people might not know how to use it or something. it's like this on almost every app, it's sooo annoying! any way to sort through the BS?