Last.fm Ltd. has updated Last.fm for iPhone to v2.0, streamlining the interface, adding tagging, personal tag radio, common artists (when viewing a profile) and a calendar-based events view. The new update also adds support for the iPhone 2.1 software update. The software allows users to design personal radio stations based on artists or genres, and offers artists bios, concert information, favorite track sharing and smart recommendations, based on user listening.

The app communicates with Last.fm's website, uploading iPhone and iTunes listening histories, for later recall. It works with both the iPhone and the iPod touch and is free on the iTunes App Store.