Djay 2 launches for iPad, Nike+ Running gains fitness challenges

Djay 2 arrived in the iTunes App Store on Thursday, giving users the ability to turn their iPads into a full-featured DJ system. The new app has a redesigned user interface with multiple performance layers and a single deck mode. Those features allow for easy switching between turntables and waveforms, as well as the ability to focus on a single deck with larger controls.

Algoriddim's new app also includes the ability to build samples from one's own library or to control the built-in samples using the sampler and drum pads. Users can also visually identify songs and beats with the HD Waveforms interface feature.

Algoriddim's Djay 2 is available in the iTunes App Store at a temporary introductory price of $1 for the iPhone and $5 for the iPad edition.

Nike+ Running gets Nike+ Challenges

Nike this week rolled out an update to its Nike+Running app for iOS, introducing a social challenges feature that essentially allows users to run a race against their friends. The new feature is called Nike+ Challenges, and it includes tracking systems and achievements to help friends stay competitive with each other.

Nike+ Running version 4.3 integrates a leaderboard that lets friends track their progress and compare against each other. It also has a medal system, denoting which friends won which competitions and when. Users simply choose a distance and invite their Nike+ friends to compete. The app automatically tracks friends' progress. Additionally, group chats help users stay connected and motivated.

The new version of Nike+ Running is available as a free download in the App Store. The 49.6MB download requires an iPhone 3GS or higher, third-generation iPod touch or higher, or an iPad. It is compatible with iOS 5.0 or higher.