Augmented reality is a layer of digital objects and information like images, videos, 3D content, rendered over the real world. It is also referred to as the mixture of the virtual worlds and the real world. This is done through computer vision technology, which has the ability to study our surroundings. Users can interact with those digital objects, even though they are rendered in the real world. Augmented reality technology succeeds when one cannot differentiate between the digital object and the real-world object. Many augmented reality apps for Android & iOS have come onto the market. They are changing the traditional way of shopping, playing, and learning.