You can install SpamSieve onto your home Mac the same way that you did on the office Mac. Or, you can transfer the training data so that you don’t have to repeat that part of the setup. Either way, please read the note at the bottom of this page.
To filter the spam off your iPhone, please see this page.
You didn’t seem to be receiving the e-mails that I sent, so I replied via private forum message. You can check your messages by clicking here or by using the link at the top right of the page. The gist of it is that we’ll send you a serial number (and a CD, if you want) when you purchase SpamSieve.