points-and-rewards-for-woocommerce

Points and Rewards for WooCommerce plugin help merchants to improve their brand value and retain customers by setting up a points-based loyalty program for their online stores. With this plugin, merchants can reward their loyal customers by awarding points on their online activities. Customers can further redeem earned points for rewards. Maintained by wpswings on GitHub, where it has earned 15 stars from the community.

It's actively developed around loyalty, points, points-and-rewards, and is a solid reference for anyone building with these tools.