WooCommerce Gravity Forms Product Add-ons v3.4.4 WordPress Plugin With Lifetime Update.
Create product add-ons using the powerful form building capabilities found in Gravity Forms
With the Gravity Forms Product Add-ons extension, advanced product configuration forms can be built and linked to any product in WooCommerce. Forms that contain conditional logic, pricing fields, user input prices, conditional-pricing fields, conditional submit button logic can all be created for your products. Additionally, any product that contains a Gravity Form is tracked in the cart to ensure, no matter how complex your product form only unique configurations are added to the cart and duplicates are incremented in quantity.