This is the demo version of the full app Pack 'em. This version has the same functionality as the full version, but is limited to two puzzles.
Try to solve classic packing puzzles by yourself or let Pack'em guide you to the answer. Pack'em lets you play with 2D and 3D block puzzles using an intuitive set of swiping and dragging motions to build up a solution. The full version has thousands of puzzles ranging from small and easy to large and extremely difficult.
If you get stuck, there are three levels of hints to help you along. First, Pack'em can tell you whether you are on the right path after each move so you don't spend time exploring solutions which will never work. Next, when you are really stuck you can ask Pack'em to place one piece for you. And finally, if you just want to see an answer, you can ask Pack'em to solve the entire puzzle for you.