iControlBits is a feature rich iPhone native front-end to remotely control a Transmission
client daemon via its RPC protocol. Transmission Remote GUI is faster and has more functionality than the build-in Transmission web interface.
Transmission client daemon works great with Mac OS X. All you have to do is enable remote access and you’re ready to go. You can also use it with QNAP NAS server instead of buit in download station.
iControlBits is available for $1.99 in the app store