If you like to solve puzzles involving numbers or Rubix cubes, you might want to give Juan Pablo Re’s iPhone app, Doodle Puzzle, a try. Similar to a Rubix cube, it involves manipulating (by touchscreen) numbers around a rectangle until they are in numerical order.

Such a simple concept, yet such potential for frustration. There are five difficulty levels, from Easy to Hardest; naturally, the levels get harder as you solve each puzzle. There is also a counter noting the number of moves you’ve made to solve a puzzle.

Priced at the $2, Doodle Puzzle may be slightly overpriced. The hand drawn theme is charming, and the lack of music can be a blessing if you’re a thinker who needs quiet…otherwise, feel free to blast your own form of game show music. This iPhone app is a perfect for those wanting something more involved than the usual game app or something that will give their brains a workout.

Here is a video demo of the Doodle Puzzle app on the iPhone

This 3rd Party App is available at the Apple iTunes AppStore. Browse the full list of all AppStore apps filed under the AppStore category.