To celebrate the beginning of the weekend, we thought that it would be nice to do an app giveaway.

Once again, there is nothing special for you to do. All that matters is that you be fast at redeeming one of these codes, because they will go away very quickly. But before we start, make sure you know how to redeem a promo code in the App Store…

We want to thank the developers who made this giveaway possible: Ville Helin, Alex Trott, and Kevin Dixon.

If you’re a dev and want to have your app given away on iDB, get in touch with us.

AC Wizard

This app definitely won’t be interesting to everyone, but there might be some of you out there who’ll find it useful. AC Wizard is a comprehensive heat load calculator and air conditioning sizing tool.This App is aimed at the complete novice and the hardened air conditioning engineer.

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If you’re too late to grab a promo code, you can download AC Wizard in the App Store for $2.99.

InstaTweet

We actually reviewed InstaTweet on iDB earlier this week. InstaTweet allows you to post tweets to Twitter instantly using the new features available in iOS 5 to simply just tap the app and tweet.

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You can always download InstaTweet from the App Store for $0.99 if you were not quick enough to redeem one of the promo codes.

Perfect Balance HD

This is an app exclusively for iPad owners. Rotate and stack shapes, and try to achieve perfect balance in this physics puzzle game! And then make your tower collapse. Can you master all the game’s 340 trials?

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Perfect Balance HD can also be downloaded from the App Store for $0.99.

If you didn’t get a chance to redeem of these codes, don’t lose hope. We have more giveaways coming really soon, so don’t go anywhere.