The WooCommerce WordPress/WooCommerce plugin License Manager enables you to sell and manage your app license keys easily. The plugin also expands the WordPress REST API, enabling you to remotely perform acts such as triggering or disabling the license key, turning your WordPress instance into a licensing server.
The plugin is and will always be, 100% complimentary. Please rate it on WordPress.org if you like the plugin. By donating, you can also help growth.