Tangram - Cognitive puzzle

A jigsaw puzzle that has been circulating for five thousand years. Through seven simple squares, thousands of patterns can be combined. It can inspire children's intelligence and promote cognitive improvement. Why choose us? 1. We have no ads and will not interrupt children's attention 2. We do not have in-app purchases, to avoid children buying randomly 3. We can use offline and can play anytime, anywhere 4. We are very small, only a few MB 5. We will always update the content