That's a very complex question that entirely depends on who you're trying to defend from, more than I can explain in a single comment.

The short of it is that you can make it relatively secure, but it will never reach the same levels of security as macOS. The tight integration apple has allows them to do far more for security, for better and for worse.

Worse being apple putting the entire might of the platform's security into making sure the Chess app can't be uninstalled or tampered with.