Was $1.99, now $0.99! $0.99 for sending all the unlimited texts you want!
It has 1 bad rating because version 1.0 had a few irritating features.
It uses my websites gateway to send your texts to the receivers phone!
As of right now it supports 5 main U.S carriers, but I will add more as requested.
The only flaw is you must know the receivers phone carrier.
Just search for Txt4Free on the android market.