A free app for Android, by Assemblr.

Assemblr is a new kind of educational learning platform that can be used as a powerful 3D Augmented Reality (AR) tool to bring learning to life and to make the learning process more interactive. It is the first time that AR is used for teaching. We provide high-quality 3D models that are ready to be used in class and for homework. All of the 3D models are fully customizable and can be transformed into the exact shape of your choice. You can choose to use Assemblr for learning in the classroom or at home. We have tons of models that can be used to teach science, mathematics, history, geography, and English. There are models for all major subjects and all grade levels. You can also choose to create your project and share it with other students.