AppAdvice has teamed up with Apalon in order to offer you a chance to win one of five (5) promo codes for Magical Images for iPad, iPhone, and iPod touch ($.99).

Are you a fan of optical illusions? Everyone has likely seen some form of them, such as the Thaumatrope, the Zoetrope, or even the flip book. Each of these objects uses a series of static images to create an animation or combined image.

Magical Images is an app that provides the same kind of unbelievable amazement. Instead of using completely separate images, Magical Images contains images carefully broken apart into interleaved frames. Using a vertical line grid to complete the images, they can be viewed in a fast-paced motion, providing the illusion of animation.

To use, select one of the many images by tapping on it, then tap on the screen once to show (or hide) the control bar at the bottom. To begin the effect, tap on the rectangular grid symbol in the middle to add the vertical line overlay. Pull the grid left or right using a swiping motion, moving at whichever speed you prefer.

Apalon is offering Magical Images at an introductory price of $.99, and plans to offer weekly content updates to keep the experience fresh.

To have a chance at winning one of two Magical Images 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 PM PST tonight (January 29th). 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 PM PST tonight to have a chance at winning one of the other three Magical Images 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.