> ## Documentation Index
> Fetch the complete documentation index at: https://product-comparison-docs.geticonicapps.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How Compare Products Are Chosen

> Learn how Compare With and Shopify related products determine which products appear in the comparison grid.

## **How compare products are chosen**

**Compare with in the app:** Add **Compare with** products on each product in the app for full control and the most relevant comparisons. That list is saved on the product. When it is set, those products take priority in the grid ahead of automatic related picks.

You can select **up to twenty** products in **Compare with** for a single product. That lines up with the theme block setting described below.

**When Compare with is empty:** The app compares the current product with **Shopify related products** for that product. Those are the products Shopify's recommendation system suggests as related or complementary, so the set can change as your catalog changes.

<Tip>
  Use Compare with for tight comparisons, such as models in the same family. Related products alone are useful when you have not set Compare with yet, but hand picked products usually match your merchandising best.
</Tip>