iTransmission is a free jailbreak app that allows you to download torrents straight to your iPhone. We’ve talked about torrent apps before, but iTransmission works like the popular desktop torrent app of a similar name, Transmission.
Transmission has been a hugely popular torrent client on non-mobile platforms, and iTransmission aims at making it easy to download torrents right from your iPhone.
iTransmission has the cleanest interface of any torrent client I’ve used on the iPhone. Like it’s desktop companion, the app works great and offers plenty of features. The iOS app is currently in its Alpha stages of testing, so there are still some bugs and glitches that need to be worked out.
When you’ve installed iTransmission in Cydia, the app’s icon is added to your iPhone’s springboard. When you tap the app, you are greeted with iTransmission’s list of active or paused downloads.
Screenshots: 
Download: Multiupload