AppAdvice has teamed up with Sprite Labs in order to offer you a chance to win one of five promo codes for Paint FX: Photo Effects Editor ($1.99) for iPhone, iPod touch, and iPad.

Most photo filter apps have a difficult time balancing features and functionality to create an engaging user experience, but Paint FX: Photo Effects Editor is one of the few that is able to nail both.

Paint FX: Photo Effects Editor includes an easy to understand interface that works great in both portrait and landscape orientations, providing you with quick access to all of its main features no matter how you like to work on your photos. It allows you to import photos from your library or pull them in from Facebook, and then spice them up with a huge selection of effects.

So... many... effects!

Each of the effects can be applied to the entire photo, or you can paint them in with your finger in order to only cover a portion of the photo. The app includes the ability to adjust the brush opacity, size, and edge along with the ability to zoom in on your photo, making it easy to perform intricate changes. You can also layer effects, and change each effect’s brightness, contrast, and saturation in a snap.

Paint FX: Photo Effects Editor includes a handful of other tools as well, like undo and redo, masking, an eraser, and the ability to share your photos via Facebook, email, or upload them to the Paint FX community page.

To have a chance at winning one of two Paint FX: Photo Effects Editor promo codes, simply hit that blue tweet button near the bottom of this page or retweet this post from your favorite Twitter app before 11:59 p.m. PST tonight (Feb. 23). We will then search the Twitterverse for all of the retweets and randomly choose our lucky winners. The winners will be notified via Twitter, so please be sure to follow us so we can send you your promo code via a direct message.

Non-Twitter users and those of you who want to increase your odds of winning can simply leave a relevant comment below before 11:59 p.m. PST tonight to have a chance at winning one of the other three promo codes.

Feel free to participate in the giveaway via either or both methods. Only one entry per person per method is allowed, totaling up to two entries per person if using both.