The best Shopify upsell & cross-sell apps in 2026
The apps that lift average order value — product page upsells, cart cross-sells, post-purchase offers — ranked by auction by their makers.
How this leaderboard works
Every position is an auction: Shopify upsell apps bid real money, starting at €5, and the highest bid takes first place. No jury, no sponsored reviews — the leaderboard moves the second someone bids more. Clicks sent to each site are counted and public. The full rules.
How to choose your upsell app
Upselling happens at three moments: on the product page (accessories, upgrades), in the cart or at checkout (low-friction add-ons), and after payment — the one-click post-purchase offer, the most profitable because it can't risk the initial order. The best apps cover the whole journey and let you set where and when each offer appears.
Look at two numbers above all: the impact on theme speed (a badly loaded upsell widget costs more in conversion than it earns in cart value) and the additional revenue genuinely attributed, which good apps display without inflating. Revenue-share pricing aligns the maker with you; flat subscriptions win at volume.
What to compare
Compare: placements covered (product, cart, checkout, post-purchase), rule-based or AI personalisation, compatibility with your theme and checkout (Shopify Plus or not), measured speed impact, and the billing model — percentage of generated revenue or subscription. Check that offers can be A/B tested.
Frequently asked questions
What's the best Shopify upsell app?
The one that lifts YOUR average order value without slowing your store: the leaderboard above shows the makers bidding on their app, with public clicks. Test on your own traffic — they all offer trials — and keep the one whose attributed revenue clearly beats its price.
Is post-purchase upselling worth it?
It's often the most profitable: the offer appears after payment, in one click, with no card re-entry — so it can't lose the initial order. Acceptance rates of 5 to 15% are common on a well-targeted offer.
How much does an upsell app cost?
From free to ~€100/month for subscriptions, or 1-3% of generated revenue for performance models. The right math: attributed additional revenue should cover the app's price several times over, otherwise change app or offers.
Read before you choose
See also: Reviews · Email & SMS · Loyalty · Subscriptions