Buy together: automatic related products

What this solution does

The module automatically analyzes the order history of your online store, identifies products frequently purchased together, and displays a recommendations block titled 'Bought with this item' on the product card. You no longer need to manually link thousands of catalog items: the system independently generates related offers based on actual purchases, eliminating routine work and helping to increase the average order value.

The module is ready to use immediately. No changes to the site template code are required; the block automatically appears on the product page with default settings. If needed, it can be moved to any other location using a CSS selector.

The block loads smoothly without layout shifts. While data is being fetched, neat outlines of the cards (skeleton) are displayed, preventing page jumps and customer distraction.

The system operates quickly thanks to built-in Bitrix caching, avoiding unnecessary load on the database during user visits. Product cards open without delay.

Recommendation recalculation runs nightly without failures.

Product associations are updated automatically on a schedule during low-traffic night hours. By default, this process runs from 02:00 to 06:00.

The system filters out random single-item orders. You can set a minimum threshold for co-purchase frequency to ensure that only consistently popular product combinations appear in the recommendation block.

The module allows customization to match your store's needs. You can define a custom header for the block (for example, "Bought with this item") and specify the analysis period for order history in days. The default analysis window is 180 days.

General iT can install “Buy together: automatic related products”, configure its settings and verify its operation in the existing project.