A single application means one unique end product (which can be copied and made available to end users of that product). The end product depends on the nature of the item – for an item like a logo template, the end product is the final, unique logo, which can be used in unlimited ways. The next few FAQs explain some situations where we consider a series of related uses to be a single application.
Example: A website theme can only be customised to create one customised website. If you want to create a second website from the same theme, you should purchase another license.