TanZen Free - Tangram puzzles App

TanZen is an application that allows students to solve tangram puzzles digitally. This may be good for students who have difficulty places pieces in specific places, as it allows them to complete the same task, with some technological aid.
The application states:

Description

Find your Zen, with the #1 top selling tangram game on the App Store! Over 50 puzzles for free!

Choose a puzzle to solve, and try to fit all seven game pieces within the shaded puzzle area without overlapping. TanZen will recognize when the puzzle is finished. Pick up and play for two minutes, or two hours!

Features:
- 54 free puzzles
- Large, intuitive touch controls
- Solve puzzles in any order
- Hint system
- Optional advanced mode for expert puzzles
- Soothing background music by Atomicon