Best Shopify upsell and cross-sell apps

1,281 apps compete in this space on the Shopify App Store. The 20 below are ranked by merchant review volume among apps rated 4.5★ or higher, excluding apps also listed under Page builder or Pay later, from data updated November 2, 2026.

Upsell apps raise average order value by offering something extra at the moments a shopper is already committed: on the product page, in the cart drawer, at checkout, or on the thank-you page after payment. The mechanics differ a lot. Pre-purchase offers are simple to run but compete with the buy button; post-purchase offers appear after the card has been charged and can be accepted with one click, so they convert well without risking the original sale.

Ranked below by review volume among apps rated 4.5 stars or higher. The largest players bundle upsells with product bundles, volume discounts and free-gift thresholds; the smaller ones tend to do one placement very well. Decide which placement you want before comparing feature lists.

The 20 best Shopify upsell apps (2026)

Ranked by total merchant reviews on the Shopify App Store among apps rated 4.5 or higher and tagged Upsell and cross sell, excluding apps also listed under Page builder or Pay later; lower-rated apps with large review counts follow. No paid placement. Methodology →

What to look for

Which placements it supports on your plan. Editing the checkout page itself is limited to higher Shopify tiers; post-purchase and cart offers are available more broadly.
How offers are chosen. Manual rules are predictable; AI recommendations need enough order history to be better than a human's guess.
Discount stacking and inventory behaviour — offers that ignore stock levels or double-apply codes create support tickets.
Pricing model. Many charge a percentage of upsell revenue or tier by order volume, which is fine at small scale and expensive later.

Frequently asked questions

What is the difference between an upsell and a cross-sell?

An upsell offers a better or larger version of what the shopper is buying (the 3-pack instead of the single). A cross-sell offers something complementary (the case with the phone). Most Shopify apps in this category do both and the terms are used loosely.

Do post-purchase upsells work on every Shopify plan?

Post-purchase offer pages are available to most stores using Shopify's checkout, with some payment-method exceptions. Customising the checkout page itself is a separate, more restricted capability. Check the app's listing for plan requirements.

Will an upsell app slow down my store?

It can. Product-page and cart widgets load scripts on your highest-traffic pages, so test a product page's load time before and after installing, and prefer apps built on Shopify's native app blocks and checkout extensions.

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