# Introduction ![](https://3552609976-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M50Y01TKemmHpSl6feB%2F-M50Y0ZIgvH_dYi7thL3%2F-M50Y1S-aGdgs0stR8ZK%2Flogo-dark.svg?generation=1587016411902076\&alt=media) The plugin provides an opportunity to add custom options for products with the possibility to calculate product price based on the chosen options and using custom maths formula! **Uni CPO – WooCommerce Options and Price Calculation Formulas** is a fully featured plugin that creates an opportunity to add custom options to your WooCommerce products as well as enables custom price calculation based on any maths formula. This version of the plugin includes these types of options: text input, text area, radio inputs and dropdown (select). This is the documentation for Uni CPO 4. The plugin has two versions: `Free` ([plugin's page on wordpress.org](https://wordpress.org/plugins/uni-woo-custom-product-options/)) and `Pro` *(*[*moomoo.agency/cpo*](https://moomoo.agency/cpo)*).* * [The list of the plugin's features available](https://kb.moomoo.agency/uni-cpo-4-documentation/why-uni-cpo). * [How to install/upgrade the plugin](https://kb.moomoo.agency/uni-cpo-4-documentation/installation) * Looking for the support? Start from reading [FAQ section](https://kb.moomoo.agency/uni-cpo-4-documentation/faq) - maybe your question is already answered there. Your question is not answered there? Contact us via support email: * Our official FB group * Our [YouTube channel](https://www.youtube.com/channel/UCC7Otx-N7qei-SEyuoGEftQ/) with video tutorials `Pro` label means that this feature is available in *pro* version of the plugin only. `Free | Pro` label means that this feature/functionality has basic possibilities in *free* version and additional possibilities in *pro* version of the plugin.