CCTV Calculator, developed by Martin Kašpar, is a free Android application designed for calculating the basic parameters of camera systems. It offers a wide range of tools for determining the appropriate focal length, camera view, IP camera bandwidth, storage capacity for records archiving, and other camera system parameters. The app provides a user-friendly interface that enables easy calculation of the aforementioned parameters.

One of the most useful features of CCTV Calculator is the lens focal length calculator, which helps in determining the focal length of a camera lens. Additionally, the app offers a camera viewing angle calculator which enables the user to determine the viewing angle of a camera. The bandwidth calculator is another noteworthy feature that allows the user to calculate the required bandwidth for IP cameras. CCTV Calculator also offers a sensitivity recalculation tool and a RAID array space calculator.

Overall, CCTV Calculator is a comprehensive tool for camera system parameters determination and testing that is highly recommended for anyone in the security industry.