itunes Sync loses jailbreak apps

Hi,
Bit of a newbie to jailbreaking..
But I seem to lose my JB apps when I do an itunes sync.
What am I missing?
Im sure its just something small. I was going to try to click "transfer purchases" but that dosent seems right since they werent purchased

thanks!

yes via installous..

anything I installed goes away after syncing with itunes..

Not that I have many....Im trying before I buy

I apologize