A free program for Android, by VladMadGames.

What is a jigsaw puzzle? A jigsaw puzzle is a picture puzzle that is made up of a number of small, irregularly-shaped pieces, usually made of wood, with a number of small, randomly-placed stickers or other types of landmarks, and a number of blank, empty spaces. It is a popular type of puzzle that can be played by adults and children alike. There are many different types of jigsaw puzzles, with different themes, such as animals, vehicles, people, etc. The goal is to put the pieces together to form a picture, such as a vehicle or an animal. If you are successful, you will have assembled a picture. 

Why play jigsaw puzzles?

Jigsaw puzzles are a great way to exercise your brain. In addition to being fun, they can also help you develop a number of skills. First of all, you need to be able to see and understand the picture in front of you. If you can do that, you will be able to identify the different parts of the picture and will be able to put them together.