Geared for iPad dropped from $2.99 down to FREE today.
Not sure how long it's going to last - has a history of jumping up and down.
http://www.appshopper.com/games/geared-for-ipad
GAME DESCRIPTION: Geared is a radically new and innovative puzzle game; a unique addition to its genre. The first and only Gear-based game with absolutely no snap-grid. Geared delivers complete and …