RIM's BlackBerry App World isn't the only on-device application store available for its market-leading smartphone platform. There's also longtime mobile-device retailer MobiHand's BlackBerry App Store, for instance.

The latter was recently upgraded to include Version Tracking. So, for the first time, BlackBerry owners can get instant over-the-air updates for every app on their device.

The BlackBerry App Store also includes automatic device detection. That way you can be sure the app you've downloaded is compatible with your particular BlackBerry model. Plus, users can access thousands of themes, exclusive deals, free trials, and a growing catalog of apps priced as low as $0.99 cents, according to MobiHand.

"After years of launching and operating hundreds of co-branded desktop and on-device browser-based stores that support platforms including BlackBerry, Palm, Symbian, Windows Mobile and Android we've gained significant insight into mobile customers' needs," said MobiHand president and CEO Steve Howard in a statement. "Furthermore, our rapidly growing catalog of over 5,000 apps and 2,500 themes demonstrates how developers have embraced the revenue generating opportunities we provide through our unique merchandising capabilities, pricing flexibility, and our proven MobiReach store management platform."

Here are some additional features of MobiHand's BlackBerry App Store:

Deal of the Day --where a new deeply discounted application is offered every 24 hours

Browse by Category --to find apps related to Themes, Personal Productivity, Games, Entertainment, etc.

Browse by List --to view Top Apps (Paid and Free), "What's New," "What's Hot" and Specials

Detailed Application Descriptions --include product details, ratings, reviews and screenshots carousel

Optimized checkout using a credit card with one-click convenience

Easy download and installation --with OTA delivery directly to the BlackBerry device

The MobiHand On-Device App Store can be downloaded over the air by going to www.mobihand.com/appstore from the BlackBerry Web browser.

To celebrate the app store's grand opening, from now until June 16, MobiHand is discounting all apps by 20 percent. Just enter coupon code, "APPSTORE" during checkout.