Beyond that breadth, its highlights are ready-made offer templates — cross-sell, upsell, service add-ons, and free gifts — collection-wide offers, and a Smart Auto-Upsell mode that uses Shopify's AI to pick the most relevant product for you. The newer slide cart adds built-in offers and a free-shipping rewards bar, and as a Built for Shopify app it brings unlimited upsell revenue with no extra commission and no hit to page speed.

Its signature is true one-click upsells — customers accept an offer without re-entering payment details — so both pre- and post-purchase offers convert smoothly. On top of that you get unlimited offers and free upsells through the Shop app, extending your reach at no extra cost.

Where Rebuy really delivers is depth: a Smart Cart, AI-powered product recommendations, and customizable search and merchandising rules that work together across the homepage, cart, checkout, and post-purchase. Deep integrations with tools like Klaviyo and Recharge let you tailor the entire journey, and merchants consistently credit it with lifting average order value and conversions.

It covers the whole post-cart journey — one-click post-purchase upsells, checkout order bumps for Shopify Plus, and a customizable thank-you page — with built-in A/B testing to optimize every offer. Setup is no-code and support is responsive, so it is easy to launch and iterate. The most powerful checkout-editing features are reserved for Shopify Plus, and a few users would like deeper analytics.

Built by Code Black Belt, it is one of the most established recommendation apps on Shopify, using an AI algorithm to surface Amazon-style frequently-bought-together bundles that customers add in a single click. You also get custom and fixed bundle options, Shopify POS compatibility, and multilingual support — all for a flat $9.99/month with no revenue share, backed by more than 2,300 reviews.

It is one of the few apps to cover the entire funnel — product page, cart, and thank-you page — and backs that with genuinely advanced tools: a funnel builder, A/B testing, an AI autopilot that picks the best offer, and even subscription upsells. Best of all, the free plan includes every feature, so you can run a complete upsell stack from a single app.

It packs in a full range of placements — Amazon-style bundles, product-page cross-sells, cart funnels, and post-purchase and thank-you-page offers — all through widgets designed to stay unobtrusive. Multi-language and multi-currency support suit international stores, and a real standout is the free setup assistance over Zoom, chat, and email, which helps explain its 1,551 five-star reviews.

Designed for fashion and lifestyle stores, it turns curated looks into shoppable lookbooks that customers can add to the cart in one click. Premade, customizable templates keep setup quick and code-free, while bundle upsells with discounts nudge larger orders — which is why merchants give it a perfect 5.0 rating for boosting engagement and order value.