How do I get apps I purchased on my IPad to my Ipod touch?
If they are not on your computer, then put them there, then sycn them to the ipod (if they are compatible with ipod)
If the iPod has iOS 4.3 or later you can redownload them directly to the iPod by:
Downloading past purchases from the App Store, iBookstore, and iTunes Store
Retrieving data ...