Add Free Product to Cart for Magento 2
Version: 1.7.0
Product page: https://aheadworks.com/add-free-product-to-cart-extension-for-magento-2
Installation instructions and User Guide: https://aheadworks.atlassian.net/wiki/spaces/EUDOC/pages/1228079296/Advanced+Subscription+Products+-+Magento+2