Almost guessed it. :) There is native is_page_template() function. More Solution Displaying the Name of the Queried Taxonomy Term on a Term Archive Page? in WordPress e-commerce, customizing checkout process based on product in WordPress plugin recommendation - Publishing presentations in WordPress? in WordPress Displaying Posts Related to Other Posts by a Taxonomy Term? in WordPress Pagination resolving to first page only in WordPress Reffered: https://wordpress.org/
