Do I absolutely need the “YOOtheme Pro Theme” to use the extensions or addons from addons4.pro, or can these extensions be used in other ways?

For all extensions and add-ons labeled “YOOtheme Pro Extensions,” the “YOOtheme Pro Theme” is required. This theme is not included with our extensions and must be subscribed to and downloaded separately from the website yootheme.com. Without this template, the extensions and addons cannot be used.