Anyone bought a license for biteSMS (jailbreak app)?

I'm wondering if anyone here has purchased a license for the biteSMS jailbreak
app. If you have how would it work if I ever had to restore my phone and
re-jailbreak?

what is a jailbreak ap?

An application from Cydia or Rock after you've jailbroken your iPhone.

ok i didnt buy bitesms but i bought quickreply....

and yes even if you restore the phone and re-jb it will still use the liscense you bought

thanks for the info...