Help figuring out blackberry application costs.?

by analytik
Question by anwick m: Aid figuring out blackberry application charges.?
I just got a new blackberry pearl and I'm hunting to add applications to it. I know they expense a monthly or annual fee for most, but will I get charged for data usage with them if they operate outside of the e-mail/messaging at the moment incorporated in my strategy? For instance, for a GPS or weather application: if I signed up for a 30-day 'free' trial, will I still have to pay whatever rate my carrier

google blackberry maps ...