Apple has been pretty strict on BitTorrent clients — or anything related to torrent downloading — for iOS, and it does its best to keep them out of the App Store, meaning you must jailbreak your device if you want to install one. However, the Cupertino company appears to have let one slip through its net. Transmission RPC, although not a full-fledged BitTorrent client, is a $1.99 app that allows you to control Transmission for Mac OS X from your iOS device.
It doesn’t allow you to download files to your iOS device, but it does allow you to open torrent files, then proceeds to download them in Transmission on your Mac. Its App Store description makes that clear:
The transmission rpc is a application that connects to a transmission server thru network to perform the download.
The download will not be performed on ios device! it will be performed on the server.
Despite this, Transmission RPC is incredibly useful. When you’re out and about, it allows you to begin downloads that will be ready for you by the time you get home. It can also be used to pause downloads, check the status of each of your downloads, delete torrents from the Transmission server, and more.
Essentially, then, it’s no different to the Transmission web client, which can be accessed via mobile Safari on your iPhone, iPad, and iPod touch. But if you prefer a native experience, then Transmission RPC can help. You might want to grab it quick, though; it probably won’t be around for long.
Source: App Store