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buzzd, a location-based city guide and social network, has launched a native app made for BlackBerry smartphones, which brings many features of its mobile Web version to a native mobile application. The network was the recipient of the first round investments from the BlackBerry Partners Fund (similar to Facebook’s fb Fund) last October. Previously only available via a mobile web browser, buzzd has also launched a companion website (for a computer browser) that offers the same information.

buzzd’s app answers the question, “What’s going on around me right now?” Buzzd will tell you which bands are playing at local bars, the location of a four-star eatery, which bar is most popular and other similar information. The interface lets the user share information with others on buzzd, so people can setup their own social networks.

With this app, users can browse and search continuously updated event feeds, which include pricing, location, and event details, and access ratings and reviews on restaurants and bars. buzzd aggregates information from other event and review sites including Citysearch, Flavorpill, Time Out, MyOpenBar, last.fm, and Clubvibes. User-generated feedback from the buzzd community for “real-time” activity about events, restaurants and bars is also included in the mashup of information.

The application also allows you to automatically add events to your Blackberry Calendar, add venues to your Blackberry contacts, broadcast updates from buzzd to Twitter, and features integration with maps to provide you exact locations of venues.

Instead of using GPS (which navigates positioning based on global satellite technology), the app is the first of its kind in the BlackBerry AppWorld to use Cell ID, which buzzd says is faster than GPS and works more efficiently in concentrated areas (like clubs and bars), where buzzd is likely to be used. Cells are hundreds of radio base stations that make up a network provider. Each base station or cell covers a physical area and these cells connect together to make up the entire network. The size of cells depends on the density of base station installed in a given area. A mobile phone connects to the network using the cell in which it is located.

As the mobile moves, it leaves one cell and joins another. The new cell then takes responsibility for connecting the phone to the network. Every time the cell that “owns” the mobile changes, buzzd reads the cell id and cell name and delivers these to the device.

Founded in 2007, buzzd has previously partnered with Virgin Mobile to equip Virgin’s phones with a native app. Interestingly, Yahoo Mobile recently abandoned its Smartphone app to focus on the iPhone market.

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