Bandsintown 3.0 (Free) - Bandsintown lets users pick favorite artists from their own music library (or elsewhere) and be alerted when they are coming nearby or give general tour info. Version 3.0 adds Facebook integration, syncing with all the popular streaming music services, and features faster loading and management. [Download - 5.2MB]

Twitterific 5.2 ($3 (sale)) - Twitterific 5.2 is a significant update, adding a gradual rollout of push notification support, Droplr support, an increase of timeline tweets to 600, user banners are now visible in profile pages and a great many performance enhancements and bug fixes. Discussions can now be shared by email or storify, and the app is half-off to celebrate the new version for a limited time. [Download - 5.1MB]

CrossDJ 1.1.0 ($10) - CrossDJ is a full-featured mixing app and full 2-channel mixer with realistic scratch, three bank EQs, preset loops, six locators, smart sync and now in version 1.1.0, keylock. The new feature means that songs stay in key no matter how much they are pitched, which in combination with beat syncing greatly expands the options for the DJ to match music. [Download - 19.2MB]