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Comparison · Updated 3 November 2026

Best AI cart upsell apps for Shopify, compared

“AI cart upsell” gets attached to a lot of listings; not all of them actually include AI on the free plan. Of the four apps compared here, one gates the AI behind a paid tier entirely. The other three cap in two different units — monthly orders and active campaigns. Every figure below was read from that app’s own Shopify App Store listing on the same day and quoted verbatim.

The short answer

XB AI Cart Upsell includes its AI product-matching free, capped at 50 monthly store orders. Selleasy brands an AI-driven engine across 18 strategies, free up to 5 active campaigns with unlimited orders. Carty's free plan is a sticky add-to-cart bar only — its AI upsell recommendations are a paid-tier feature. NUO AI, our own app disclosed below, includes AI-matched cart recommendations with no stated cap, with a much shorter review history than the other three. (Rebuy, a name that still shows up on most roundups, currently has no live Shopify App Store listing at all — it is absent from the comparison below for that reason.)

What ends each free plan — and which free plans even include the AI

AI-matched product recommendations in the cart are the headline feature in this category, but not every “free” plan includes them. Ratings and review counts are as shown on the Shopify App Store on 3 November 2026.

AppRatingAI on free plan?Free plan capWhat it costs next
NUO AI
our app		5.0 · thin review historyYesNo stated capNo paid tier
XB AI Cart Upsell
Xboost		5.0 · 189Yes“Up to 50 monthly store orders”$12.99/mo for 51–100 orders
Selleasy
Logbase		4.9 · 2,778Yes“Up to 5 campaigns,” unlimited orders~$8.99/mo Starter
Carty
CartyLabs		5.0 · 62No — paid tier onlySticky add-to-cart bar only, free~$9.95/mo Growth (adds AI upsell)

Source for every row: the app’s own Shopify App Store pricing section, read 3 November 2026. The App Store showed pricing in INR for XB and Carty in this session; USD figures above are converted at the page’s own stated rate and rounded. Rebuy is omitted because its listing currently shows as not available on the Shopify App Store.

Carty is the one to read carefully. It's recommended on “AI cart upsell” roundups because the product itself is well-reviewed — but its free plan is a sticky add-to-cart bar, not an AI upsell engine. The AI-powered recommendations only activate on the Growth tier. If AI on the free plan is the point, Carty's free tier doesn't deliver it.

Who wrote this, and the bias you should assume

This comparison is published by NUO AI, and NUO AI is one of the four apps in it. That is a real conflict of interest and no amount of methodology removes it.

What we did to keep it usable anyway: every competitor’s pricing, rating and AI claim was read from its own Shopify App Store listing on 3 November 2026 rather than copied from another roundup; each entry below names something that app does better than NUO AI; and NUO AI’s own entry states its thin review history rather than burying it.

If you would rather not take a vendor’s word for a vendor comparison, the useful part of this page is the “AI on free plan?” column above — every answer in it is checkable against a public listing in under a minute.

The four apps

NUO AI — AI-matched recommendations with no stated cap, and the newest app here

Our app 5.0 · thin review history · NUO AI, Manhattan NY

Start with the caveat. Every other app on this page has between 62 and 2,778 App Store reviews. NUO AI has far fewer. If track record is your selection criterion, this is the wrong app on this page and one of the others is the right one.

What it offers in exchange is AI-matched cart recommendations included on the only plan NUO AI has, with no stated order or campaign cap, bundled with gift-with-purchase, BOGO, tiered rewards and add-ons at $0.

  • Free planAI-matched cart recommendations included, no stated order or campaign cap
  • Paid tierNone
  • Best forStores wanting AI recommendations bundled with other offer types, not a standalone cart-drawer app
  • Weakest atTrack record — a short App Store history against competitors with hundreds to thousands of reviews

Full breakdown of AI cart upsell in NUO AI · Shopify App Store listing

XB AI Cart Upsell — AI included free, capped by monthly order volume

5.0 · 189 reviews · Xboost

XB's listing states its AI “analyze[s] your niche & orders to auto-configure a smart Cart Drawer,” with AI-powered product suggestions included on the free plan alongside multi-rewards, add-ons and shipping protection.

The cap is a monthly order threshold, not a campaign or revenue count. “Up to 50 monthly store orders” resets every month, so a low-volume store stays free indefinitely; a store doing 80 orders a month pays $12.99 from day one.

  • Free plan“Up to 50 monthly store orders” — AI upsell included, not gated
  • Next tier$12.99/mo (51–100 orders) · $29.99/mo (101–500), 14-day trial
  • Beats NUO AI at189 reviews, niche-specific AI auto-configuration, and shipping-protection upsells

Shopify App Store listing

Selleasy — an AI-branded engine across 18 strategies, capped by campaign count

4.9 · 2,778 reviews · Logbase

Selleasy runs 18 named upsell and cross-sell strategies with pre-purchase, in-cart and post-purchase placements, marketed around an AI-driven recommendation engine, with unlimited orders on the free plan.

The cap is campaigns, not orders. “Up to 5 campaigns” is enough for a store running one AI cart-upsell campaign plus a few others; a store wanting many simultaneous campaign variants will hit the ceiling before volume becomes the issue.

  • Free plan“Up to 5 campaigns,” unlimited orders · 18 upsell/cross-sell strategies
  • Next tier~$8.99/mo Starter · ~$28.99/mo Pro · ~$58.99/mo Max, 30-day trial
  • Beats NUO AI at2,778 reviews, 18 named strategies, and unlimited orders on the free plan

Shopify App Store listing

Carty — a well-reviewed cart drawer, but the free plan has no AI in it

5.0 · 62 reviews · CartyLabs

Carty's two-app family (Cart Drawer and Checkout Customizer) advertises “AI-powered Upsell Recommendations,” a free-gift rewards bar, shipping protection and subscriptions. The free plan includes a sticky add-to-cart bar and sticky cart button.

The AI is not on the free tier. The listing's Growth plan — priced at roughly $0.05 per order until 2,000 orders, then free — is where “AI upsell, rewards, shipping protection” actually activate. A store installing Carty for the free plan alone gets the cart drawer, not the AI matching.

  • Free planSticky add-to-cart bar and sticky cart button — no AI recommendations
  • Next tier~$5/mo Starter Basic · ~$8/mo Starter Pro · ~$9.95/mo Growth ($0.05/order to 2,000, then free, adds AI)
  • Beats NUO AI atA dedicated two-app cart-plus-checkout suite, and shipping-protection upsells

Shopify App Store listing

How to pick, in one question

Confirm the AI is actually on the free plan before comparing anything else — it isn't, on every app that markets itself as one.

Your situationWhat the caps doWhere to look first
Low order volume, want AI freeXB and Selleasy's free tiers both applyXB (order-based) or Selleasy (campaign-based)
Want AI bundled with gifts, BOGO, add-onsDedicated cart-drawer apps don't bundle thisNUO AI
Want a cart-drawer rebuild first, AI laterCarty's free tier covers the drawer, not the AICarty, budgeting ~$9.95/mo for the AI tier
Growing past 50 orders/moXB starts billing; Selleasy's campaign cap may still holdSelleasy (unlimited orders) or NUO AI
You do not want a cap to think aboutOnly one option here has noneNUO AI — accepting the shorter track record

What this comparison does not tell you

Three things it deliberately does not claim, because the evidence for them does not exist:

It does not rank the apps by recommendation accuracy. No one has run these four AI engines against the same catalog and traffic. “AI-matched” means different things across vendors — model type, training data, and update frequency were not independently verified for this comparison.

It does not include Rebuy, a name that still appears on most “best AI cart upsell app” roundups. As of 3 November 2026 its Shopify App Store listing states the app is not currently available, so no live pricing or rating could be verified for it. Listings have reportedly gone unavailable and returned before — check directly before assuming it's gone for good.

Pricing goes stale, and currency display is regional. Everything here was read on 3 November 2026. The Shopify App Store showed INR pricing for XB and Carty in this session; the dollar figures above are converted at the page's own stated exchange rate and rounded. Confirm exact figures before installing.

Frequently asked questions

Which Shopify AI cart upsell apps actually have a free plan that includes the AI?

As of 3 November 2026, three of the four apps in this comparison include AI-driven recommendations on their free plan: NUO AI, XB AI Cart Upsell, and Selleasy. Carty's free plan covers only a sticky add-to-cart bar — its AI upsell engine is gated behind the paid Growth tier.

What actually ends a free AI cart upsell app plan?

Two different units among the apps that include AI free. XB caps at 50 monthly store orders. Selleasy caps at 5 active campaigns with unlimited orders. NUO AI states no cap. Carty's free plan has no AI to cap — the AI itself only exists on its paid tier.

Is Carty's free plan an AI cart upsell plan?

No. Carty's free plan includes a sticky add-to-cart bar and sticky cart button only. The listing's AI-powered upsell recommendations activate on the paid Growth tier, priced at roughly $0.05 per order until 2,000 orders, then free. Installing Carty for its free plan alone does not get you the AI.

Why isn't Rebuy in this comparison?

Because its Shopify App Store listing currently shows as not available, as of 3 November 2026. No live rating or pricing could be verified for a delisted app, so it is named here as a known absence rather than included with stale or unverifiable figures. Check the listing directly, since app availability has reportedly changed before.

Does AI cart upsell actually outperform rule-based upsell logic?

The pattern is well reasoned — matching offers to real cart contents should outperform a static, manually configured rule set as catalogs grow — but no independent, controlled comparison between AI-matched and rule-based upsells on identical traffic was found publicly for this comparison. Treat it as a reasonable expectation, not a verified percentage.

Why does NUO AI appear in its own comparison?

Because leaving it out would be its own kind of bias. NUO AI publishes this comparison and is one of the four apps in it. Every competitor's pricing and AI claim below was read from its own Shopify App Store listing on 3 November 2026 and quoted verbatim, and NUO AI's weakest point — a short review history against competitors with hundreds to thousands of reviews — is stated rather than hidden.

How many App Store reviews does NUO AI have?

Far fewer than the other three apps on this page, which range from 62 to 2,778 reviews as of 3 November 2026. A merchant choosing on track record alone should weigh that heavily; this comparison does not argue otherwise.

No cap to plan around.

If an order cap or a paid-only AI tier is what's putting you off, NUO AI has neither — and a shorter track record, which you should weigh honestly against the alternatives on this page.

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