These days brands and retailers are constantly rolling out mobile applications to keep up with tech-savvy consumers. However, only a slight few have really stepped up their game and incorporated the key features needed to have users coming back.

Ticketmaster is keeping event goers in the know with a new iPhone application that lets them browse and search for concerts and games in their area.

Ticketmaster is reaching out to its on-the-go music fans by letting them buy and search for tickets via an upgraded BlackBerry application.

Events-ticketing giant Live Nation Entertainment and wireless carrier Vodafone have created a mobile application that lets consumers get information about concerts, the latest news about the bands and participate in promotions.

Live Nation Entertainment has launched a commerce-enabled application for Apple’s iPhone and iPod touch to provide another platform for fans to buy tickets to concerts and other events.

St. Jude’s Children’s Hospital is upping the ante with mobile giving for its sixth-annual Thanks and Giving campaign by partnering with several companies, including Ticketmaster.

The Ticketmaster for BlackBerry application is now live and available as a free download in BlackBerry App World.