Best Shopify Cross-Sell Apps (2026)
The best Shopify cross-sell app in 2026 is Libautech Bundles & Upsell, which covers every cross-sell surface (frequently bought together, product add-ons, cart popup and drawer offers, and post-purchase complements) from 1 dashboard with per-offer revenue analytics. Upsell.com (formerly ReConvert) is the strongest pick when the thank-you page is your main cross-sell channel, and Shopify Search & Discovery remains the best free starting point for manual complementary product placement.
Cross-selling means adding complementary products to the order the shopper is already building, and the app's job is putting the right complement at the right moment with a 1-click add.
TLDR: Top Picks
What Should a Cross-Sell App Actually Cover?
Four surfaces, in order of intent. The product page, where frequently bought together blocks and add-on checkboxes join the evaluation. The cart moment, where a popup or drawer offer fires on add to cart, the strongest signal in the session. The checkout (Shopify Plus only), for no-thought complements like shipping protection. And post-purchase, where a 1-click complement attaches to the paid order with zero conversion risk. An app that covers 1 surface leaves the other 3 to additional apps, each with its own scripts and bill.
The 5 Best Cross-Sell Apps Compared
| App | FBT | Add-ons | Cart offers | Post-purchase | Pricing |
|---|---|---|---|---|---|
| Libautech Bundles & Upsell | Yes | Yes | Yes | Yes | 7-day trial, plans on listing |
| Upsell.com (ReConvert) | Yes | Partial | Yes | Yes, thank-you page depth | From $4.99 per month plus 0.75% |
| Shopify Search & Discovery | Manual | No | No | No | Free |
| Rebuy | Yes, AI | Yes | Yes | Yes | From $25/mo, scales with orders |
| Libautech AI Post Purchase | No | No | No | Yes, automatic | Free |
1. Libautech Bundles & Upsell
Bundles & Upsell is built around exactly this problem: 1 install covering frequently bought together pairings, add-on checkboxes under the buy button, cart popup and drawer complements, checkout offers on Plus, and post-purchase, with each offer's revenue reported separately. Offers install as theme app blocks on Online Store 2.0 themes, and the Built for Shopify badge covers the performance question.
Why consider: full journey coverage means your cross-sells coordinate; the shopper who declined the product page pairing sees a different complement in the cart, not the same one twice.
Best for: most stores; the 7-day trial with a frequently bought together block on 3 bestsellers is the fastest honest test.
2. Upsell.com (formerly ReConvert)
Upsell.com built the deepest thank-you page toolkit in the category: cross-sell widgets, reorder blocks, and surveys on a page shoppers revisit multiple times per order, plus standard pre-purchase and post-purchase offers. Plans start at $4.99 per month for up to 49 orders, plus a 0.75 percent fee on revenue the app generates, which is worth modeling at your volume.
Why consider: if the thank-you page is central to your strategy, nothing matches its editor.
Best for: stores treating the order confirmation as a merchandising channel.
3. Shopify Search & Discovery
Shopify's free first-party app lets you hand-assign complementary products that render in theme recommendation sections. No combined add to cart, no automation, no analytics beyond standard reports, and the price is zero.
Why consider: validating that complements move before paying for automation.
Best for: new stores with small catalogs where you know every pairing personally.
4. Rebuy
Rebuy's machine-learning engine personalizes cross-sells across the journey and integrates deeply with subscription and retention stacks. It is the most capable and the most demanding option: pricing starts at $25 per month and scales with order volume, and configuration is a real project.
Why consider: genuine per-shopper personalization at a scale where manual pairing breaks down.
Best for: high-volume and Plus stores with an owner for the tool.
5. Libautech AI Post Purchase
AI Post Purchase does 1 cross-sell surface, the post-purchase moment, for free, with Claude AI reading each order and selecting the complement automatically. No funnels to build, no rules to maintain.
Why consider: zero cost and zero configuration on the one placement that cannot hurt conversion.
Best for: any store, as the post-purchase layer under whichever pre-purchase tool you choose.
How Do You Choose?
If you want 1 app for everything, Bundles & Upsell. If the thank-you page is the strategy, Upsell.com. If budget is zero, Search & Discovery now and AI Post Purchase for the after-payment moment. If you process thousands of orders monthly and want ML personalization, Rebuy. Whatever you pick, source the first pairings from Shopify Analytics co-purchase data rather than intuition; the analytics already know what your customers buy together.
Frequently Asked Questions
Libautech Bundles & Upsell for full-journey coverage from 1 dashboard: frequently bought together, add-ons, cart offers, checkout, and post-purchase, with per-offer analytics, a Built for Shopify badge, and a 7-day trial.
Two useful ones. Shopify Search & Discovery handles manual complementary products on the product page, and Libautech AI Post Purchase handles the post-purchase complement automatically. Together they cover the first and last moments at zero cost.
Apps installing as Online Store 2.0 theme app blocks work with modern themes without code. Prefer Built for Shopify apps; older script-injection approaches risk performance and breakage.
One per placement. A product page pairing, a cart offer, and a post-purchase offer can coexist because they fire at different moments, but each moment gets exactly 1 offer.
Usually the same app. Cross-sells add complements, upsells raise the value of the chosen item (quantity tiers, upgrades), and full-suite apps like Bundles & Upsell run both, which matters because most catalogs benefit from a mix.