Tabby load Accordion Closed is an add-on for the Tabby Responsive Tabs plugin which changes the default behaviour for the accordion display so no tab content is shown on initial page load. The tab display (desktop view) is unaffected. Demo: http://michaelatkins.co.uk/demo-tabs/
There is no admin panel with this plugin. Once it is activated it affects all of the tab groups on the site. Support and updates are provided for one year from the date of purchase. Single site and developer options are available.
The cost of this add-on including updates and support for one year on a single site is £24. The Developer option including updates and support for unlimited sites is £89.