The current control software for the Brewer Ozone Spectrophotometer was created over 30 years ago for MS-DOS computers and has poor compatibility with modern software and hardware platforms. The new cross-platform software for controlling the Brewer is able to run on actual operating system for computers, tablets and smartphones, and at the same time has a one codebase. The observation data and configuration constants of the spectrophotometer are stored in the embedded relational SQLite database. The core of the application is written in C++ based cross-platform Qt framework, and the observation routines is implemented in Qt script interpreted scripting language and is integrated into the core of the application.