WooCommerce Conditional Product Fields @ Checkout Plugin
WooCommerce already comes with everything you need to bring your store online and sell digital and physical products. With the WooCommerce Conditional Product Fields at Checkout plugin, you can take control of products fields on your checkout page. It lets you display additional fields dynamically when certain conditions are met.
This plugin can be used to display fields when purchases are made from a certain country or a specific payment gateway is detected. Fields can have several “and/or” conditional rules. Text, Text Area, Number, E-mail, Date, Country, and other fields are supported. You can choose to display additional fields based on products and categories.
vanquish is the coder behind this paid WooCommerce extension.