I have been looking everywhere for this and im glad they tried but it really isnt all that good. It gets confused between all the languages and it doesnt understand question marks periods or smilie faces. It also dosnt let you go back and add more to ur message. So its cool that they tried but i would not advise to spend your money on it. I dont even use it. I agree that dragon dictation is so much better and its free.
Chara :D about Voice SMS : Speech to Text