When you install the app for your Shopify store, you will be asked to approve certain permissions, which include READ ONLY permissions for customer details, orders and products/collections. Phizit requires these permissions to analyze each customer's order frequency, cart-size, and behaviour to properly predict a lifetime-value to build value-based audiences. Phizit requests to read products info for our beta feature: product/collection based audience segmentation. Phizit permissions are READ ONLY, and cannot be used to modify any of your store or theme data.