Using the Zurb Foundation Top Bar. Zurb Foundation has a very nice Top Bar component and we've gone to great lengths to make sure it's well implemented and as user-friendly as possible in the 7.x-4.x branch of the Zurb Foundation theme.
Default implementation By default, a standard Drupal main menu is output and the Foundation Top Bar will appear only for small screens. The top bar will display the site's main menu on the left side and the user menu on the right. In order to enable/disable any of these menus, just disable their display as usual in the "Toggle Display" fieldset of the "General Settings" tab. Theme Settings.
DrupalGap - Mobile Applications for Drupal Websites. DrupalFR.