Its a woocommerce Wishlist plugin with full customization option.
After install a default wishlist button will appear beside WooCommerce add to cart button (In Single Product detail page).

Some highlighted features:
1. WordPress Admin can Set wishlist button text/icon/html.
2. Wishlist button can be add anywhere in product detail page via Short-Code [SIT-WISHLIST-BUTTON].
3. Default Wishlist button can be hidden from plugin setting page.

Some highlighted features for theme developer:
1. Theme Developer can change the wishlist button text/icon/html by creating file(in specific location) in the theme folder.
2. Theme Developer can overwrite the wishlist render template by creating file in the appropriate folder

Documentation

For full documentation Please visit https://shibainuit.com/wishlist-shibainuit

Wishlist ShibainuIT

Documentation