Review apps work alongside Biscuits Bundles. The thing to decide is where reviews should live: on the bundle product page, on the component product pages, or both.
When a bundle is purchased, the order records the individual component products as line items, alongside the bundle parent product. Review apps read those products, so review requests and star ratings attach at the component and bundle parent level, not to "the bundle" as one combined item.
To show component reviews on your bundle page (or share reviews the other way), most review apps use a product grouping feature, and some have dedicated Shopify Bundles support. Here is how to set it up in each.
Note: Other apps' menus, settings and steps change over time and are outside our control. Always check the app's own documentation for the latest, and contact that app's support for anything specific to their app.
Judge.me has dedicated Shopify Bundles support on its Awesome plan. See Judge.me: collecting and displaying reviews for Shopify bundles.
Turn on Bundle sync in Settings > Bundles. Judge.me detects bundles versus components, then lets you request reviews for the bundle, the components, or both, and choose whether component reviews display on the bundle page.
To stop a product requesting reviews, use "Always skip this product" in the review requests dashboard.
Note: native bundle products cannot be added to Judge.me Product Groups, so use the Bundles feature for them.
Loox shares reviews across products with Product Groups (Convert plan and up). See Loox: sharing reviews across product groups.
Create a Product Group that contains the bundle parent plus its components so component reviews surface on the bundle page. Grouped reviews show a product thumbnail so shoppers can see which item each review is for.
You can also control what each product page shows via the Loox reviews widget settings in the theme editor (Product, Store, or Both).
Yotpo shares reviews with Product Grouping using product tags. See Yotpo: grouping products.
Add the same tag, in the form YGroup_yourname (for example YGroup_giftbox), to the bundle parent and each component so they share reviews and star ratings. Limit: one group per product.
To stop a product requesting or showing reviews, add it to your Yotpo blocklist.
Okendo has native Shopify Bundles review collection (for Shopify fixed bundles) plus Groups for display. See Okendo: collecting reviews for bundled products.
Under Reviews > Settings > Bundled products, choose one of: Include bundled products (request the bundle and each item), Exclude bundle products (items only), or Replace individual products (bundle only). Okendo recommends "Replace individual products" for hero bundles.
Use an Okendo Group to display component reviews on the bundle page.
Stamped shares reviews with Product Groups. See Stamped: product groups.
Create a Product-ID group of the bundle parent and its components. Stamped's per-product checkmark/X column controls which products display the shared reviews, so you can point component reviews onto the bundle page.
To stop a product requesting reviews, use Stamped's request exclusions.
[screenshot - a bundle product page showing grouped component reviews]
Decide whether you want reviews on the bundle page, the component pages, or both, then set up grouping as above. If you would like a hand, reach out with your review app name and store URL.