Cross-sell apps for Shopify are powerful - but they come with monthly fees, additional complexity, and yet another dashboard to manage. If you want to start recommending books on your product pages without adding more overhead, Shopify has built-in options that work reasonably well.
Here's a practical overview of what's available without a third-party app.
Method 1: Shopify's Built-In "Related Products" Section
Most modern Shopify themes include a "Related Products" or "You Might Also Like" section on product pages. This section is theme-dependent, meaning its availability and behavior vary depending on which theme you're using.
By default, Shopify's related products algorithm surfaces items from the same collection or items with shared tags. This means if you want a specific cookbook to appear as a cross-sell on your cast iron skillet product page, you need both products to share either a collection or a tag.
How to make this work for book cross-sells:
- Create a tag like
cast-iron-relatedor use a collection called "Kitchen Essentials." - Add that tag (or collection) to both your cast iron skillet product and to the cookbook you want to cross-sell.
- Shopify's related products algorithm will then include the cookbook in the recommendations shown on the skillet page.
This approach is free, requires no app, and works across all themes that include a related products section. The limitation is that you can't fully control the order in which recommendations appear - the algorithm selects from the pool of tagged products, not from a curated ranked list.
Method 2: Manual Mentions in the Product Description
This is the most direct approach and requires no technical configuration at all. You simply edit your product description to include a mention of a related book with a link.
Example, in a cast iron skillet product description:
"Looking to master cast iron cooking? We recommend pairing this skillet with [The Cast Iron Way to Cook] - a comprehensive guide to cast iron recipes and care."
Link the book title directly to its product page in your store. This method is:
- Completely free and requires no app
- Fully under your control - you choose exactly which book is recommended and exactly where in the description the mention appears
- Easy to update - just edit the product description if you want to change the recommendation
The downside is visual - a text link in a product description is less compelling than a visual product card with an image. It also requires you to manually update each product description, which doesn't scale well if you have hundreds of products.
Method 3: Theme Customization for Specific Pairings
If you're comfortable using Shopify's theme editor, some themes allow you to add a "Complementary Products" section to specific product pages using metafields. This is a more advanced version of the manual approach, but it allows you to specify exactly which products appear in the related section for each product page.
Shopify's Online Store 2.0 themes (Dawn, Refresh, Craft, and others) support metafield-based complementary product recommendations without requiring a third-party app. The setup involves:
- Creating a "Complementary Products" metafield in Shopify Admin → Settings → Custom Data → Products
- Assigning specific products to that metafield on each product page where you want to control recommendations
- Adding the complementary products section to your product page template in the theme editor
This gives you precise, product-by-product control over which books appear as cross-sells, without any app fees.
When an App Becomes Worth It
Manual methods work well when you have a small number of high-traffic products where precision matters. As your store scales and you want dynamic cross-sells, A/B testing of recommendations, or cart-level suggestions, a dedicated cross-sell app starts to make economic sense - the revenue lift typically outpaces the monthly cost.
But for testing the books-as-cross-sell concept before committing to an app, the manual approaches above are a completely viable starting point.
"Great app, has bulk add feature, and a large selection of books." - BooksCloud merchant
The books are already there through BooksCloud. Getting them in front of customers at the right moment on your product pages doesn't require a paid solution on day one.