Rebuy Engine
PaidAI personalization engine for Shopify with cart upsells, cross-sells, and post-purchase offers
What is Rebuy Engine?
Rebuy is a personalization engine built specifically for Shopify that unifies AI-driven product recommendations, cart upsells, cross-sells, and post-purchase offers into a single platform. Unlike point solutions that only optimize one stage of the funnel, Rebuy spans the entire customer journey, from smart product widgets on product detail pages, to in-cart bundles and frequently-bought-together suggestions, to post-purchase one-click upsells that appear after checkout. The platform uses machine learning trained on your store's historical order data to predict which products a shopper is most likely to buy next, and it continuously A/B tests offers to optimize conversion. Rebuy integrates deeply with Klaviyo, Recharge, Okendo, Yotpo, and other Shopify ecosystem apps, meaning you can personalize email flows and subscription upsells from the same recommendation engine. Brands like True Classic, Olipop, and Obvi use Rebuy to drive 10-20% AOV lifts, and in 2026 Rebuy moved to usage-based pricing: paid packages start as low as $25/month each and scale with order volume, bundling saves up to 30%, and Platform One bundles every Rebuy product from $534/month.
Rebuy Engine demo video
Watch Rebuy Engine's official demo to see Rebuy Engine in action before reading our full review.
Official video by Rebuy Engine via YouTube, embedded for reference. ToolChase does not host or claim this video.
⚡ Quick Verdict
Mid-market Shopify brands looking to increase AOV through smart product recommendations and cart upsells
Brand-new stores, single-SKU catalogs, or non-Shopify merchants
Free (Rebuy Monetize) · usage-based packages from $25/mo · Platform One $534/mo
Yes (Rebuy Monetize is free; paid packages have a 14-day trial)
Most comprehensive personalization across cart, checkout, and post-purchase in one Shopify-native platform
Pricing scales with orders per month, can become expensive at high volumes
Bottom line: Rebuy Engine scores 4.3/5, The most complete personalization platform for Shopify with proven AOV lift.
Pricing
Rebuy Monetize, free: post-purchase offers on the thank-you page. No cost; Rebuy pays you $0.20-0.35+ per order it monetizes.
Build-your-own packages, from $25/month each: pick Cart & Merchandising, Checkout & Post-Purchase, Search & Collections, or Flows & A/B Testing. Pricing scales with your store's orders per month (OPM), and bundling saves up to 30%.
Platform One, $534/month base: every Rebuy package bundled, with premium support and a dedicated CSM; 10% discount billed annually.
Enterprise: custom pricing for high-volume stores. Paid plans include a 14-day free trial. Pricing verified July 2026.
Key Features
- Smart Cart with AI upsells and cross-sells
- Post-purchase one-click offers
- Product recommendation widgets (PDP, cart, checkout)
- AI-powered search and discovery
- Klaviyo, Recharge, Yotpo, Okendo integrations
- A/B testing framework with automatic winner selection
- Subscription upsell flows for Recharge merchants
- ROI attribution dashboard for recommendation impact
Pros & Cons
Pros
- Most comprehensive Shopify personalization platform on the market
- Proven AOV lift of 10-20% for mid-market brands
- Deep integrations with Klaviyo, Recharge, and the Shopify ecosystem
- Free Rebuy Monetize tier pays you per post-purchase order
Cons
- Pricing scales aggressively with orders per month (OPM)
- Shopify-only, no BigCommerce, Magento, or WooCommerce support
- Building custom recommendation rules has a steep learning curve
FAQ
How much does Rebuy Engine cost?
Rebuy now uses usage-based pricing. Rebuy Monetize (post-purchase offers on the thank-you page) is free, and Rebuy pays you $0.20-0.35+ per order it monetizes. Paid packages (Cart and Merchandising, Checkout and Post-Purchase, Search and Collections, Flows and A/B Testing) start as low as $25/month each and scale with your store's orders per month (OPM), with bundle savings up to 30%. Platform One bundles every package from $534/month base (10% off billed annually), and Enterprise pricing is custom. Paid plans include a 14-day free trial. Pricing verified July 2026.
Does Rebuy work for stores that aren't on Shopify?
No. Rebuy is built exclusively for Shopify and Shopify Plus and uses Shopify's native APIs for product data, customer profiles, and checkout. If you're on BigCommerce, Magento, or WooCommerce, you'll need an alternative like Bloomreach, Nosto, or Dynamic Yield. This tight Shopify focus is both a strength and a limitation.
What AOV lift should I expect from Rebuy?
Rebuy publishes case studies showing 10-20% AOV lift for mid-market DTC brands like True Classic, Olipop, and Obvi. Actual results depend on baseline conversion rate, catalog depth, and customer segments. Brands with limited cross-sell opportunities see less lift than those with broad catalogs. Expect 4-6 weeks of tuning before hitting peak performance.
Rebuy vs Shopify native recommendations?
Shopify's native Product Recommendations API is free but limited to basic collaborative filtering. Rebuy adds AI-powered ranking, post-purchase offers, cart upsells, bundle builders, and A/B testing, features that simply don't exist in Shopify native. For stores under $500K/year, native may be enough. Above that threshold, Rebuy's monthly fee is typically recovered within days of activation.
Can Rebuy replace Octane AI quizzes?
Not really, they solve different problems. Octane AI builds product recommendation quizzes for onboarding new shoppers, while Rebuy focuses on contextual recommendations for existing shoppers on PDPs, in carts, and after checkout. Many brands run both.
Is the 14-day trial enough to evaluate Rebuy?
Yes, for most stores. Rebuy's impact is measurable within days once you install Smart Cart and post-purchase offers on your top-converting SKUs. Fourteen days is enough to see directional lift in real orders on a store with steady traffic; lower-traffic stores should line the trial up with a promotion or peak period to get a clean read.
📋 Good to know
Install the Rebuy Shopify app, enable Smart Cart, and import your first recommendation widget. Basic setup takes 15 minutes; full optimization takes 2-4 weeks.
SOC 2 Type II compliant. GDPR compliant. Customer data stays within Shopify's infrastructure and is not shared with third parties.
Start with one package (from $25/mo) and add more as the AOV lift proves out. Platform One ($534/mo base) becomes the better deal once you run 3+ Rebuy packages.
Moderate. The Smart Cart works out of the box, but custom recommendation rules and A/B testing require experimentation.
