Sparrow for Mac: Earlier this month, we noted that Sparrow for Mac was updated with Retina Display support, OS X Mountain Lion optimization, and support for Mountain Lion’s Notification Center features. Today, that Sparrow for Mac update has made its way to the Mac App Store as a free update. It was previously only available on Sparrow’s website. The app, for new users, costs $9.99, and it has long been regarded as a viable replacement for OS X’s included Mail application. It is $4.99 for the next 3 days to celebrate Retinas!

Steam Summer Sale:  Earlier today, we noted that Steam is having a massive summer sale:

Steam cuts up to 88% off a selection of downloadable games for Windows or Mac during its Summer Sale, with prices starting at $2.49. Many titles are at the lowest price we’ve seen. Sale ends July 22. A best bet is downloads of Portal 2 for Windows and Mac for $4.99. That’s $2 under our May mention and the lowest price we’ve seen for this title.

iStack Mac Bundle: Earlier this week, we pointed to the iStack Mac Bundle, a bundle that provides major discounts on some popular applications for the Mac. Parallels 7,  SnagIt, Disk Drill Pro, Hands Off , Clarify, Elasty, PaintSupreme, TextSoap, and iGlasses 3 (together valued hundreds of dollars) is just $50 when purchased through this special bundle program.

Tap Tap Revenge Tour: As a followup to its slew of popular music games, Tapulous has released Tap Tap Revenge Tour. The game features a Tour Mode and a Jam Mode, with the Tour Mode being the spotlight feature of the new game. This mode puts you into the position of a music artist, and you go on “tour” tapping in Tap Tap Revenge. It’s a fun new twist to the popular game, one of the first games for iOS.

Bejeweled BlitzThis popular game title received several enhancements such as Game Center support, improved social support, bug fixes, and new brightness control settings.

AmpliTube Fender (iPad): This music-making application for iPhone and iPad (each device has its own app version) was updated with improved mixing and recording, digital in and out audio, MIDI support, audio copy/pasting, and more.

Jay & Silent Bob in: Too Fat To Fly (iPad): This seems like an addicting new and fun game. From its description:

Too Fat To Fly is a challenge-based physics game, where players assist Jay in order to launch Silent Bob through various environments such as a shopping mall or the streets of Jersey. Through the completion of challenges, players have the opportunity to unlock special features and upgrades, including new costumes for Jay and Silent Bob.

BBC OlympicsIn addition to the NBC Olympics app that we covered earlier today, BBC’s iOS application for full coverage of the 2012 Summer Olympics has been released.