iOS Product Page Optimization (PPO) refers to the process of optimizing the content and design of an iOS product page to improve its ranking in search engine results and increase the likelihood of conversion. This can include optimizing the app title and description, using relevant keywords, displaying customer ratings and reviews, and using a clear call-to-action (CTA).

Custom Product Pages, on the other hand, refer to product pages that are created specifically for individual products or product lines. These pages can be customized to showcase the unique features and benefits of the products, and may include additional content such as product images, descriptions, and customer reviews.

In summary, iOS PPO is focused on optimizing the product page for an iOS app to improve its ranking and increase the likelihood of conversion, while Custom Product Pages are customized pages that are created specifically for individual products or product lines. Both iOS PPO and Custom Product Pages can be important for improving the user experience and increasing the likelihood of conversion for an e-commerce business.