Very simple, free programm. Definitely, user interface must be updated — small window from 90s with list of micro icons with small text nowadays looks like a joke on HD displays.
Can change folder, file and groups of files privileges & attributes: visibility, reаd only and others. Also, can change them recursively.
About primitive app icon: on macOS you can easy make you own! Just right click on app → Properties → and drag'n' drop a .icns file to the small icon on the top, where show size and change time (not "Preview" area with bigger icon near the
collapsible comments field).