The iPhone and iPod touch Sirius XM app is available today. It’ll be available as a free download from the App Store. You’ll need to get the $2.99/month premium plan to get it on the go for existing subscribers. The iPhone service, which can also be used by iPod Touch Wi-Fi users, will be free for Sirius customers who subscribe to its Internet option. Sirius already has about 19 million subscribers to its pay radio system, but its biggest source of new user is the when consumers buy cars with satellite radios built-in.
