Apple has recently updated its iBooks iOS app, fixing a bug that caused some e-textbooks to not open properly.

Filterstorm - the universal photo-editor for the iPhone and iPad - has recently received an update, adding support for Facebook and Twitter exports, additional editing tools and interface updates.

Zombie Gunship - an iOS app that allows players to fight a zombie hoard from the gunner seat of a heavily-armed AC-130 ground attack aircraft - has recently received an update. Now, fans of the game can enjoy a new scenario - "Pleasant Acres" - thanks to the update, and the app has also received numerous bug fixes and optimizations.

In a new study conducted by the mobile application monitoring company Crittercism, it is noted that iOS application crash more often than their Android counterparts. The results, as you can see in the above and below images, speak for themselves: most applications crash under iOS 5.0.1, while Android apps appear to be rather more stable.

If you're looking for a Google Reader client that's rather a little different from the rest of the bunch, consider purchasing and downloading Reader X for iPad ($1.99). This new, interesting iPad application allows users to view the contents of their Google Reader reading list on their iPad's screen, in a grid. You can browse through the grid either horizontally or vertically, and touching an item in the grid opens it accordingly.

The original Infinity Blade iOS app ($5.99) has recently received an update, adding a fourth content pack to the popular universal game. Now, fans of Infinity Blade can enjoy new magic rings, swords, shields and helmets, a new enemy - RookBane - and can also take a sneak peak at Infinity Blade II and Infinity Blade: Awakening, a new iBook based on the hit game series.

Fly With Me ($0.99) is a brand-new iOS game developed by Electronic Arts, which has recently appeared in the App Store.

Call of Duty: Black Ops Zombies ($6.99) has just been updated, adding new weapons, in-app purchases and the ability to save and load game progress.

Ticket to Ride Pocket ($1.99) has recently received an impressive update. Now, fans of the virtual board game can enjoy playing an asynchronous multiplayer mode, which allows users to play up to four online games (via Game Center) rather like Words With Friends or Scramble With Friends, and go between active games whilst other players take their turns. Furthermore, both the iPhone and iPad app - Ticket to Ride ($6.99) - have received improved support for the local game mode, and numerous bug fixes.

Screenshots of the upcoming Sparrow for iPhone application hit the Web recently (via 9to5Mac), before the original post was pulled. Below, we've included a gallery of the images - as you can see, the app looks elegant, well-designed and, in short, everything we expected it to be.

Vokul brings handsfree control to your iDevice, but should Siri be worried?

Reckless Racing 2 has just launched in the iOS App Store, where it's available to purchase and download for $4.99.

Flipboard (free) has recently launched new Content Guides for users in Australia, Canada, the UK and Ireland.

After lingering around in a closed beta for just under a week, Steam Mobile (free) is now available for all to download and use. The application allows Apple fans to interact with the Steam community on-the-go, read the latest gaming news and keep up to date with Steam’s most recent sales and special offers.

Wunderkit - a GTD iPhone app that allows users to work on a project with friends and family - has recently hit the App Store.

Both Photogene applications - that is, Photogene² for iPhone and Photogene for iPad - have recently received updates, adding new sharing options, new edit tools and numerous bug fixes and improvements.

Hatchi - an iPhone app that allows users to care for a virtual Tamagotchi creature on their mobile device - has just received its first update. Now, fans of the $0.99 app can enjoy additional pet statistics, Game Center integration and numerous other new features and improvements.

Food Network In the Kitchen ($1.99) has recently received a major update, adding a brand-new user interface, improved stability, users reviews and more to the popular universal application.

Pocket Informant and Pocket Informant HD - the popular calendar and task-management apps for the iPhone and iPad - have recently been updated. Now, users of the applications can take advantage of a whole load of new features, including Notes and Contact views, Task Smart Groups and much more. Both applications are currently available in the App Store for $9.99 each.

Band of the Day - an iPhone app that allows users to discover a new artist or band each and every day of the year - has recently received an update, and is now compatible with the iPad.

If you went crazy for Reckless Racing back in 2010, fasten your seat belts because a sequel app is set to race into the App Store this February. The news was announced by Polarbit via a Twitter reply, and since a trailer for the upcoming application has hit the Web.

Disney's popular Where's My Water? application for the iPhone, iPad and iPod touch has recently received an update, adding new content ("Cranky's Story") available via a $0.99 in-app purchase.

Rage HD ($1.99) has recently received an update, adding a “Mutant Bash Store” that offers users two new episodes (both are available for $1.99). The update also adds support for Apple’s HDMI output cable, iOS 5 and improved support for the VGA and component cables under iOS 5.