Mobile entertainment agency skyrockit’s commerce-enabled music remix application, Romplr, cracked the top five free applications in iTunes two days after its relaunch.

The Virtual Zippo Lighter application for the iPhone and iPod touch is offering users in-application purchasing of premium licensed skins in more than 72 countries worldwide.

Handset manufacturer Nokia and Rihanna have teamed up to launch the music artist’s new album on multiple platforms – including mobile.