We’ve teamed up with HAAB, our latest AppAdvice Daily podcast sponsor, in order to offer you a chance to win the full version of Sherlock: Interactive Adventure (Free) for iPhone, iPod touch, and iPad.

Sherlock: Interactive Adventure is a digital adaptation of Sir Arthur Conan Doyle’s “The Adventure of the Red-Headed League.” Your journey starts in 19th-century London, as a pawnbroker comes to consult Sherlock Holmes and Doctor Watson regarding the sudden and inexplicable end to the red-headed league. But this isn’t like any interactive storybook app you’ve ever seen before, and you’ll realize this important fact the moment you glance at its very first page.

Hold your iDevice in portrait orientation to read the authentic, original text just as Doyle intended. If you rotate your iDevice into landscape orientation, you’ll be provided with a completely different experience. The text will drop out of view and your screen will fill up with all of the app’s interactive features. You’re able to listen to an audio version of the text narrated by Simon Vance and you’re able to play 3-D animated plot-based scenes, view period articles, browse through dossiers of key characters, view a map of London, and play detective yourself by searching for clues.

My dear Watson.

It’s really quite the experience and we highly recommend checking it out for yourself, which won’t be difficult at all since Sherlock: Interactive Adventure is available for free! If you like what you see, you’re able to unlock the full version of the app for $2.99. The full version includes 30 plot-based scenes and 20 original musical themes. The best part is, you can pick up where you left off in the free version or you can restart the adventure.

To have a chance at winning one of our five full version promo codes ($2.99) for Sherlock: Interactive Adventure, all you have to do is follow AppAdvice on Twitter and tweet the following message:

“I’ve entered to win Sherlock: Interactive Adventure from @AppAdvice and you can too! http://bit.ly/OFenYW #SherlockGiveaway”

Don’t have Twitter? Sign up for a free account right now.

By tweeting the message above you’ll earn one entry into our giveaway. You’re able to earn an additional entry by leaving a relevant comment below. All entries must be received before March 23 at 11:59 p.m. PDT. Good luck!