A free app for Android, by BitMango.

Block Triangle Puzzle: Tangram is a puzzle game with colorful blocks. Use your logic and your skills to arrange them into the required shapes. There are many levels that will challenge your brain and make you think outside the box.

It is a simple and fun block puzzle game that will keep you engaged for a long time. The gameplay is very easy to learn and there are lots of unique levels that will keep you busy.

It has beautiful graphics and will keep you hooked! You can also play whether you are online or offline.