Best Shopify upsell apps for AOV growth in 2026

Would you like fries with that?

Six words, and probably the most famous upsell ever spoken. It works for a simple reason: it's the right offer, at the right moment, to someone who's already buying.

Shopify brands get more moments than a drive-thru window (product pages, the cart, checkout, the page right after payment) and much better data about who's ordering. The right upsell app turns those moments into a higher average order value (AOV) without buying more traffic.

Short answer: Rebuy is the best Shopify upsell app for most mid-market brands, because one AI engine picks the offer on product pages, in the cart, at checkout and after purchase. Aftersell, Zipify OneClickUpsell and Upsell.com (formerly ReConvert) round out the top four.

Quick disclosure: Rebuy Cart & Merchandising and Rebuy Checkout & Post-Purchase compete with every app on this list. So yes, you'll find Rebuy at number one (shocking, we know). We've still tried to give every app a fair shake, cons included. Ours too.

Prices and features come from each app's Shopify App Store listing or pricing page, checked in October and November 2026. They change, so check before you install.

Quick picks: the 8 best Shopify upsell apps at a glance

• Rebuy: Best for AI-personalized upsells across the whole store, from product page to post-purchase
• Aftersell: Best for post-purchase funnels with heavy testing
• Zipify OneClickUpsell: Best for pricing tied to upsell revenue
• Upsell.com (formerly ReConvert): Best free plan for thank you page upsells
• Selleasy: Best for low-cost product page add-ons
• Honeycomb Upsell & Cross Sell: Best for split testing upsell funnels
• Candy Rack: Best for flat pricing with no upsell revenue cap
• UpsellPlus: Best for online and in-store POS upsells

What is a Shopify upsell app?

A Shopify upsell app shows shoppers relevant extra products while they shop, so more orders leave with more in them. It might suggest a bigger size (an upsell), a product that pairs with what's in the cart (a cross-sell), a bundle, or a subscription. Our upselling vs. cross-selling guide covers the difference in more depth.

The good ones make two decisions for you: which product to offer, and where to show it. That second decision matters more than most app listings let on.

Where can you upsell on Shopify?

There are five places to show an upsell on a Shopify store, and Shopify sets the rules for most of them.

• Product pages. Frequently bought together, complete the look and add-on offers while the shopper is still deciding. Works on every Shopify plan.
• The cart. A slide-out cart drawer or cart page with add-ons, free gifts and free shipping progress bars. Works on every plan. Our best Shopify cart apps roundup goes deeper.
• In checkout. Offers on the information, shipping and payment steps. Shopify limits these to Shopify Plus stores, for every app.
• After payment. A one-click post-purchase offer between payment and the thank you page. Shoppers accept without re-entering card details, and it works on standard Shopify plans too.
• Thank you and order status pages. Offers, content blocks and even ads from other brands that pay you.

Checkout and post-purchase get a full breakdown in our best Shopify checkout upsell apps guide, and bundles get their own in our best Shopify bundle apps roundup. This list looks at the whole journey.

How do upsell apps increase average order value?

Upsell apps raise average order value by putting a relevant product in front of shoppers when buying intent is highest, instead of hoping they find it in your catalog. A cart add-on catches them before checkout. A post-purchase offer lands after payment, so a "no thanks" can't cost you the first sale.

Personalization is where most of the lift comes from. A 2025 Stockholm School of Economics review of 147 studies found that cross-selling, upselling and add-on selling all have a positive link to sales, revenue and profit, and that upselling works best with personalized messaging. For a Shopify store, that means offers based on what's in the cart, what this shopper bought before and what similar shoppers added. Not the same product for everyone.

How we picked the best Shopify upsell apps

• Placement coverage: How many of the five spots can the app run from one dashboard? One app means one set of rules and one report.
• Personalization depth: AI recommendations based on cart contents and purchase history, or rules you maintain by hand? Rules are fine for 20 products. Not for 500.
• Offer types: Add-ons, frequently bought together, bundles, tiered rewards, free gifts and subscription upgrades.
• Testing and reporting: A/B tests and revenue attribution you can trust.
• Shopify Plus fit: What you get without Plus, and whether checkout upsells hide in a pricier plan.
• Pricing model: Flat, order-based, revenue-based or view-based. Run the math at your Black Friday volume, not your average month.

The 8 best Shopify upsell apps for AOV growth, reviewed

1. Rebuy: Best for AI-personalized upsells across the whole store

Most apps on this list are great at one or two moments. Rebuy runs all of them from one AI and rules engine, from the product page to the order status page. The same shopper data picks every offer, so the product suggested in the cart and the one offered after payment come from the same brain (and show up in the same report).

For upsells, Rebuy comes in two packages:

• Cart & Merchandising. The Rebuy Smart Cart replaces Shopify's default cart with a slide-out cart that has tiered progress bars, free gifts, Buy More Save More discounts and one-click subscription upgrades. Rebuy merchandising widgets add personalized recommendations to product pages, the homepage and beyond. Rebuy Dynamic Bundles and the Rebuy Bundle Builder handle one-click and build-your-own bundles.
• Checkout & Post-Purchase. Rebuy Checkout Extensions add offers and trust content inside Shopify checkout (Shopify Plus). Rebuy Post-Purchase Offers add one-click offers after payment, on Plus and standard plans.

Key features:

• AI recommendations based on cart contents, browsing and purchase history, with your own rules on top for launches, clearance or margin
• Rebuy Smart Cart with tiered progress bars, free gifts, Buy More Save More and subscription upgrades
• Up to 40 post-purchase flows at once, each with its own upsell and downsell logic
• One-click and build-your-own bundles with Rebuy Dynamic Bundles and the Rebuy Bundle Builder
• A/B testing with automatic winner selection
• 40+ app integrations, including Klaviyo, Attentive, Recharge and Yotpo

Rebuy results:

• MaryRuth Organics raised AOV 27% with the Rebuy Smart Cart.
• OLLY lifted AOV 25.06% and subscription revenue 63% with the Rebuy Smart Cart and Rebuy Dynamic Bundles.
• MOSH lifted AOV 19% with Rebuy merchandising widgets, and its post-purchase offers convert at 13.6%.
• Momofuku's post-purchase offers convert at 16.25%.

Pricing: Each package is priced by your monthly Shopify orders. Up to 500 orders a month, Cart & Merchandising is $45/month and Checkout & Post-Purchase is $25/month. Bundle packages to save 10% on two, 20% on three or 30% on all four. Every package starts with a 14-day free trial and a money-back guarantee. See Rebuy pricing.

Pros:

• One AI engine for product pages, cart, checkout and post-purchase, with one set of rules and one report
• Personalization that updates from real shopper behavior, plus manual rules when you want control
• Published merchant results across cart, bundles and post-purchase

Cons:

• In-checkout offers need Shopify Plus (Shopify's rule, but a limit all the same)
• Cart and post-purchase are separate packages, so whole-store coverage means two (the bundle discount helps)
• More settings than a single-placement app. Plan your offers before you build (future you will thank you)

2. Aftersell: Best for post-purchase funnels with heavy testing

Aftersell, now owned by Rokt, built its name on one-click post-purchase upsells. Its Smart Funnels test thousands of offer combinations, and targeting covers product, cart value, tags, UTM and more. A separate Pre-Purchase plan handles the cart and product pages.

Key features:

• One-click post-purchase upsells and downsells, plus thank you page offers
• Checkout upsells for Shopify Plus stores, included in the Post-Purchase plan
• Pre-Purchase plan for cart customization, rewards bars, free gifts and product page upsells
• Product page upsells and bundles, with up to five products the merchant picks per offer
• Rokt Thanks, a free thank you page offer network

Pricing: Post-Purchase is $34.99/month for up to 200 monthly orders. Pre-Purchase starts at $59.99/month. Complete (both plans, plus a product recommendation engine) starts at $79.99/month for 500 orders. All three include a 30-day free trial.

Pros: Deep post-purchase testing, and checkout upsells for Plus stores without a pricier plan.

Cons: Cart and post-purchase live in separate plans, product recommendations need the Complete plan, and order-based pricing climbs with volume even when upsells don't.

3. Zipify OneClickUpsell: Best for pricing tied to upsell revenue

Zipify OneClickUpsell (OCU) charges by the upsell revenue it brings in, not by your order count. Small stores start low, and the bill grows when upsells do.

Key features:

• One-click post-purchase upsells, in-cart upsells and checkout upsells (Shopify Plus)
• Dynamic AI Upsells that optimize themselves from store data
• A/B testing and targeting by product, cart value and customer tags
• Cart drawer upsells, a free shipping bar, countdown timers and subscription upgrades
• Thank you page offers through PostProfit

Pricing: Starter is $9.95/month for up to $200 in monthly upsell revenue. Between $200 and $2,500, pricing starts at $25/month and steps up as revenue grows. Past $2,500, it starts at $149/month and caps at $999/month. Every plan includes a 30-day free trial.

Pros: Low entry price, no charge for order volume, and cart through post-purchase in one app.

Cons: Your bill climbs as upsells succeed, and checkout upsells need Plus.

4. Upsell.com (formerly ReConvert): Best free plan for thank you page upsells

ReConvert rebranded as Upsell.com, though the app still goes by ReConvert in the Shopify App Store. It covers almost every placement on this list, and its drag-and-drop editor makes thank you pages easy to customize.

Key features:

• Offers on the product page, cart, checkout (Shopify Plus), thank you page and order status page
• One-click post-purchase upsell funnels
• AI recommendations, frequently bought together, bundles, quantity breaks and free gifts
• A/B testing, analytics and customer segmentation
• Warranty, shipping protection and gift wrap offers

Pricing: Free up to 50 orders or $50 in upsell revenue. Paid plans are $9.99/month (51 to 100), $19.99/month (101 to 200) and $39.99/month (201 to 500), based on store orders or upsell revenue, whichever is higher. Every plan includes every feature, and paid plans come with a 14-day free trial.

Pros: A real free plan, every feature on every plan, and wide placement coverage.

Cons: Billing on orders or upsell revenue (whichever is higher) makes costs harder to forecast, and checkout upsells need Plus.

5. Selleasy: Best for low-cost product page add-ons

Selleasy, from Logbase, is a budget-friendly way to add frequently bought together offers and product add-ons. It lists 18 upsell and cross-sell strategies across product pages, the cart drawer, checkout (Shopify Plus), the post-purchase page and the thank you and order status pages.

Key features:

• Frequently bought together bundles and product add-ons on product pages, as a list, grid or carousel
• Cart drawer and in-cart upsells styled to your theme
• Post-purchase, thank you page and order status page offers
• AI recommendations, with monthly limits by plan
• Multi-language and multi-currency support

Pricing: Free plan with unlimited orders and up to five campaigns. Starter is $9/month with unlimited campaigns and 50 AI recommendations. Pro is $29/month with 1,000 AI recommendations a month and checkout upsells for Shopify Plus. Max is $59/month with 2,500. Paid plans include a 30-day free trial.

Pros: Unlimited orders on every plan, a free plan, and a low price to start.

Cons: AI recommendations are capped by plan, and checkout upsells start on Pro.

6. Honeycomb Upsell & Cross Sell: Best for split testing upsell funnels

Honeycomb, from Conversion Bear, includes A/B split tests on every plan, including the free one. Funnels run on product pages, the cart, checkout, the post-purchase page and the thank you page.

Key features:

• Product page, cart, in-checkout (Shopify Plus), post-purchase and thank you page funnels
• One-click post-purchase upsells, with the option to merge orders
• AI recommendation engine and an autopilot mode
• BOGO, bulk discounts, free gifts and discount stacking

Pricing: Free for 100 funnel views a month. Silver is $54.99/month for 2,000 views, Gold is $109.99/month for 5,000, and Platinum is $169.99/month for 10,000. Paid plans include a seven-day free trial.

Pros: Split testing everywhere, full funnel coverage, and order merging after checkout.

Cons: Pricing by funnel views means a traffic spike like Black Friday can push you up a tier, and in-checkout funnels need Plus.

7. Candy Rack: Best for flat pricing with no upsell revenue cap

Candy Rack, from Digismoothie, places offers in eight spots, from the product page to post-purchase, and charges by order count with no cap on upsell revenue. It ships with its own cart drawer, too.

Key features:

• Offers on the product page, cart, checkout, post-purchase page and thank you page
• Built-in cart drawer with a rewards bar
• AI mode, where Candy Rack AI or Google Gemini picks the upsell
• Volume bundles and quantity breaks
• Warranty, shipping protection, gift wrap and free gift offers
• A/B testing through Intelligems

Pricing: Free on trial and development stores. Lite is $29.99/month (up to 50 orders), Starter is $39.99/month (51 to 200) and Growth is $59.99/month (201 to 500). Every paid plan includes unlimited upsell revenue, an eight-day free trial and a 60-day money-back guarantee.

Pros: No revenue caps, a cart drawer included, and plenty of offer types.

Cons: Testing depends on a separate app (Intelligems), and the listed plans stop at 500 orders a month.

8. UpsellPlus: Best for online and in-store POS upsells

UpsellPlus is the rare upsell app that follows shoppers into your physical store. Alongside product page, cart, checkout and post-purchase offers, it adds one-tap upsells and automatic discounts in Shopify POS.

Key features:

• Product page and cart drawer upsells, cross-sells and free gifts
• One-click post-purchase upsells and downsells
• Checkout, thank you, order status and customer account page customization
• AI and rules-based personalization with multivariate A/B testing
• Works with Appstle, Klaviyo, Recharge, Seal Subscriptions, Skio and Stay.ai

Pricing: Free to build, with a 14-day free trial to launch. Launch is $49/month for up to $500 in app-generated revenue. The Shopify Plus plan is $119/month for up to $2,000 and adds checkout upsells and AI recommendations. Scale is $199/month for up to $5,000.

Pros: POS coverage, broad subscription app support, and multivariate testing.

Cons: Revenue caps on every paid plan, and AI recommendations and checkout upsells start on the $119 plan.

Comparison table: Shopify upsell apps side by side

How to choose the right Shopify upsell app for your store

Start with where you want offers to show up, then match the app to your stage of growth.

• New stores: Start free or cheap, with one offer on your bestseller. Upsell.com, Selleasy and Honeycomb all have free plans.
• Growing and mid-market brands: Coverage and personalization start to matter more than the cheapest plan. Once your catalog passes a few dozen products, hand-picked pairings go stale fast. Rebuy personalizes every placement from one engine, so offers keep up as your catalog and customers change.
• Shopify Plus brands: Use the whole journey, including in-checkout offers. Check which plan includes checkout upsells before you compare prices.

Three checks before you install anything: run one upsell app per placement (two apps fighting over the same cart can conflict, slow your store and split your reporting), test on a duplicate theme first, and run the pricing math against your busiest month.

FAQs about Shopify upsell apps

Final thoughts on choosing a Shopify upsell app

"Would you like fries with that?" still works because it's asked at the right moment, about the right thing, to someone who's already buying. That's the whole job of a Shopify upsell app.

The fries were never really the point.

The timing was.

If you'd like to how Rebuy can save you time, boost your revenue, and delight your customers, we'd love to show you around. Book a Rebuy demo →