Although the calculator worked well, the technology needed to be updated. When choosing a stack, we considered that the web application should be adaptive: display should work stably on all devices (PC, tablets, phones). So our team chose React, as it was the best option to fulfill these requirements.
The client also provided us with all the necessary layouts and graphic materials for updating the design of the application. The design has also been adapted for desktop and mobile devices.
During the project development we followed Kanban methodology. IntexSoft team arranged Skype calls with the client where we reported on the work performed, discussed all the issues and decided what else needed to be done to improve the tool.