Sony’s Music Unlimited service is getting an iPhone/iPod touch app on Friday. The free app will add more devices with which subscribers can play the music they’re paying to access.

Music Unlimited is already available on connected devices like Sony’s PlayStation 3, PlayStation Vita, Bravia TVs and Xperia tablets and smartphones, as well as via other Android devices.

“We want to let users pick up their favorite device and crank up the Music Unlimited service at any time,” said Michael Aragon, vice president and general manager of Digital Video and Music Services, Sony Network Entertainment International. “With the addition of the new iPhone and iPod touch app, users with a Basic or Premium subscription can listen to their favorite songs across a number of the most popular connected devices – in and out of the home.”

Originally launched in December 2010, the Music Unlimited service reaches 16 countries with a global catalog of about 15 million songs. Subscriptions cost $3.99 a month for the basic tier, which syncs the user’s personal music collection across devices, and $9.99 for the premium tier, which adds on-demand playback of anything from the catalog along with other capabilities.

Related links:

Music Unlimited – official site

Sony Entertainment Network – blog post