The operating system (OS) sets the standards for all application programs that run in the computer. Applications "talk to" the operating system for all user interface and file management operations.

The operating system has had its own native file manager since 2015’s Android 6.0 ... If you need even more advanced on-device file management functions, ... in order for the connection to work.

In addition to the update to Files, Apple is also updating the file management system on macOS. The new High Sierra will land with a revamped file system with built-in crash protection measures ...