There are already many applications of Augmented Reality (AR), but in all of them you are just a consumer. If you want to get started with AR yourself, you can do so on any iOS device with Reality Composer. In this app, you can create 3D scenes from homemade objects or objects and materials from the included library. You can then have this projected into the image that the camera sees and optionally add sound and movement. The app offers different modules, for example for projection on a horizontal surface, to make a living book or to release AR on faces.
For iOS you can use Reality Composer here to download.
Click the link above to download for free
Reality Composer – Creating AR Experiences