Theme support free YITH WooCommerce Compare plugin, an extension of WooCommerce plugin that allow your users to compare some products of your shop.
Install and activate YITH WooCommerce Compare plugin.
Now you must enable compare button on products. Go to WordPress dashboard -> YIT Plugins -> Compare and enable field “Show button in products list” (this will enable button on products list)
- Link or button – button
- Link/Button text – Compare
- Show button in products list – enable