Free program or app to save iPhone 4 Text Messages to?

I found the TouchCopy demo but of course I have to buy the full version to save messages to it. My laptop is not healthy enough to save them to my computer so I need an app or something to save my messages to. Please help! I want to save my old messages cause we switched service providers so I'm trying to clear out my phone since I have 2 phones right now…

Cellphone

CCopy&past

snipurl.com/25vq0rw

check 3rd 4th link