If you want to disable incognito Chrome mode on Mac, start by opening the 'Terminal.' Luckily, you can do this by using 'Spotlight.' Then press 'Cmd+Space' together and search for 'Terminal.' After that open it on your computer, and then type the command defaults write 'com.google.chrome IncognitoModeAvailability -integer 1' and press 'Enter' button from your keyboard. You can do the same procedure to
disable incognito mode Chrome iPhone. After that, restart your device. Now, you cannot find the incognito mode option in the Google Chrome browser. To revert the change, you just need to change the integer value to '0.'