For those who are on a limited text package or pay per use, this app will come in handy. It does what its name implies. All of the texts are counted, and you can set it to warn you monthly or daily if you exceed your limit. Saves you the trouble of having to remember how many you have used already or having to manually count.
Good for phones running OS6 and OS7.
Get it for 99 cents from Blackberry App World.