Tik-Tok Coach is a time and team management tool that has a web portal and a desktop app. The desktop app allows a user to track time and set new tasks. The first prototype was created for one OS — Windows. We severely cut down the time of working on the project by employing all our magic skills and re-using the Windows version code (up to 90%) for porting the app to MacOS and Linux. To make cross-platform processes easier, we right from the start used C# and gave up the libraries that engage only with one OS. Now our users can have an experience of Tik-Tok Coach on Windows, Linux, and iOS!