Quite recently I bought an iPod Touch and of course I had to check out if I would be able to develop some version of Doppler for it. It took me some time to get up and running with Objective-C but I managed. Please do notice: this version is -not- a podcast aggregrator. It's only an RSS reader (I have currently no plans to add podcast support). If you're interested, drop me a line by using the contact form.
In order to install Doppler on your iPod and or iPhone your device needs to be jailbroken. Also do notice that this is a very low-profile activity for me, so don't expect updates every second day or so.
Update: new screenshots:
