This extension enables store owners to provide consumers with free downloads if they own a licence for another product.
For instance, you may offer complimentary Product C and Product D to consumers who purchase Product A or Product B. Customers just enter their licence key for Product A or B into a form and are immediately granted free access to Products C and D.
The [edd lfd] shortcode displays the licence authentication form.
Nota Bene: To function properly, this add-on requires Software Licensing.