Расчет окна is a free Android application developed by Sergey Shynkarenko. It is a program designed for professional sales of PVC, wood, and aluminum windows and doors. The primary target audience includes window manufacturing plants, dealers, distributors, engineers, and architects.

This app allows users to calculate and save orders, which can be easily exported to any production program for window manufacturing. However, for precise price settings of the products, users need to contact the developer. The program offers a demo account with login credentials (DemoRU) that users can use to test the features of the application.

Overall, Расчет окна is a useful tool for professionals in the window and door sales industry, with its accurate calculation and saving features.