Capybara Games Inc. has Superbrothers: Sword & Sworcery EP (iTunes Link) for the iPone, iPod Touch, and iPad in the iTunes App Store for FREE (regularly $4.99) for a limited time.

Superbrothers: Sword & Sworcery EP is an exploratory action adventure with an emphasis on audiovisual style. Traverse a mythic little realm, use a sword to do battle & evoke sworcery to solve mystical musical mysteries. Co-operate with friends via Twitter, experience a videogame world that is affected by moon phases & help a wandering warrior monk complete her woeful errand.

Boris Conforty has WikiLinks (iTunes Link) for the iPhone, iPod Touch, and iPad in the iTunes App Store for FREE (regularly $3.99) for a limited time.

WikiLinks is the easiest way to browse through knowledge. It brings a new and entertaining multi-touch experience to Wikipedia browsing!

WikiLinks is easy to use but very powerful.
It is powered by the content of Wikipedia, Wiktionary, YouTube and Web Search.

WikiLinks can become your hub for online search on all Apple iOS portable devices (iPad, iPhone and iPod touch).

Silvio Rizzi has Reeder (iTunes Link) for the iPhone, iPod Touch in the iTunes App Store for FREE (regularly $2.99) for a limited time.

Update: Quick to draw! The Reeder app for iPhone current does not support Feedly or Feed Wrangler yet, but an update has been submitted to Apple and if all goes well, it should be live very soon.

Update: is now live.

One of the best RSS Reader clients and even though Google Reader may be shutting down, the developer has ensured that Reeder will not die with it. The iPhone app has added support for multiple Feedly, Feed Wrangler, Feedbin, and Fever account syncing, as well as local/standalone RSS capabilities.

Silvio Rizzi also has Reeder (iTunes Link) for the iPad in the iTunes App Store and Reeder for the Mac in the Mac App Store for FREE (regularly $4.99) for a limited time. They currently only support Google Reader, which will be shutting down as of July 1. Major updates to these apps will be released sometime in the near future.

Djonny Bravo has iCinema (iTunes Link) for the iPhone, iPod Touch, and iPad in the iTunes App Store for FREE (regularly 99-cents) for a limited time.

iCinema application will free you from all complexities of converting video into suitable to your iPhone / iPad / iPod formats and will turn the usual process of finding and further viewing videos into an exciting and pleasurable experience. It contains the most extensive list of convertible high-quality video formats and provides convenient user settings for more comfortable video playback. It features support for MKV,XVID, AVI, WMV, RMVB,VOB,FLV,3GP, MOV, M4V; high-definition video formats (720P, 1080P); subtitles: srt, ass, ssa, ksc, smi, sami, lrc; and password protection for private video archives

THX Ltd. has THX tune-up (iTunes Link) for the iPhone, iPod Touch, and iPad in the iTunes App Store for FREE (regularly $1.99) for a limited time.

THX tune-up  allows you to properly adjust your TV, projector and speakers, helping you get the most out of your entertainment system.

THX tune-up features custom video test patterns, carefully selected photos and tutorials to help you adjust and confirm the best picture settings on your display based on your room lighting. Using special test sounds, THX tune-up also lets you check your external speakers to make sure they are working in phase and are connected properly for 2-channel stereo or 5.1 surround sound systems.

THX tune-up is completely interactive — go through it at your own pace, in any order. Connect a supported iOS device to the display or sound system with an HDMI adapter & cable, or via AirPlay with Apple TV (3rd gen).

To get started, locate the adjustment buttons on your television and audio video receiver (AVR) remote controls and then simply follow the THX app tutorials which will walk you through your “THX tune-up.” The app offers tips about your remote control, room lighting, viewing distance and other helpful advice.