This is a free calculator app for Android devices.

It is designed for use by people who have an interest in the field of optics. It is a scientific app that uses a combination of graphical and mathematical methods to calculate the parameters of a lens or mirror.

It includes a number of parameters that can be used to calculate the performance of a lens, such as the focal length, the distance from the lens to the object, the size of the object, and the distance from the lens to the camera.

It also includes a number of other parameters that can be used to calculate the performance of a mirror, such as the angle of the mirror, the position of the mirror, the angle of the camera, and the distance from the camera to the object.

It is designed to be used by people who have an interest in the field of optics.