Use of an item (Free & Premium) is bound by the Single Application License.

Number of end product: 1
Use in a single end product: Allowed.
Use in a free end product: Not Allowed.
On-demand products/services: (One license per each customized end product)
Use in stock items/templates: (Not Allowed. )
Use in an end product that’s sold: Not Allowed.
Redistribution / resale by you or your client: Not allowed.