Best Shopify Upsell and Cross-Sell Apps to Increase Average Order Value

Increasing your average order value (AOV) is one of the highest-leverage growth levers available to any ecommerce business. Acquiring a new customer costs five to seven times more than selling more to an existing one — which is precisely why well-executed upsell and cross-sell strategies can dramatically improve your store’s profitability without increasing your ad spend. In this guide, OneOnic — a global Shopify agency — reviews the best upsell and cross-sell apps available on Shopify in 2026, covering pre-purchase, in-cart and post-purchase opportunities.

Understanding Upsells vs Cross-Sells on Shopify

Before comparing apps, it is worth being precise about terminology. An upsell encourages a customer to purchase a higher-value version of what they are already buying — upgrading from a standard product to a premium version, adding a protection plan, or choosing a larger size. A cross-sell recommends complementary products — suggesting a case when someone buys a phone, or a belt when someone buys trousers.

Both strategies work best when the recommendation is genuinely relevant. Irrelevant upsell pop-ups are one of the fastest ways to frustrate customers and increase bounce rates. The apps below each handle the placement and trigger logic differently, which is why choosing the right one for your store’s catalogue and customer journey matters.

The three primary placement opportunities are: product page (before add to cart), cart page or drawer (during shopping), and post-purchase or thank-you page (after the initial transaction is complete). Each placement has different conversion dynamics and different technical requirements.

ReConvert: Best Post-Purchase Upsell App

Pricing: Free for stores under $0/month revenue (development stores). Paid plans from $4.99/month (up to $499/month in store revenue). Scales as a percentage of revenue generated through the app.

ReConvert pioneered the post-purchase upsell flow on Shopify and remains the market leader in this specific category. It replaces the standard Shopify thank-you page with a fully customisable post-purchase funnel that can include one-click upsells (no re-entering payment details), cross-sell product blocks, birthday collectors (for personalised follow-ups), countdown timers for urgency, and social sharing buttons.

Key features: Drag-and-drop thank-you page builder, one-click post-purchase upsells (Shopify’s native post-purchase API), cross-sell product recommendations, A/B testing, customer segmentation for showing different offers to different buyers, survey functionality and deep analytics showing revenue per visitor.

Pros: The post-purchase moment is a uniquely high-intent window — the customer has already committed to buying from you; one-click purchase removes friction; typically generates a 10–15% AOV lift; pricing model means you only pay meaningfully when it’s working.

Cons: Only covers the post-purchase placement; does not help with product page or cart upsells; requires careful offer selection to avoid feeling pushy.

Best for: Any store that wants to immediately monetise the post-purchase experience. Pair with a cart upsell app for complete funnel coverage.

Zipify OneClickUpsell: Best for Shopify Plus

Pricing: From $35/month. A percentage of upsell revenue is charged above certain plan thresholds.

Zipify OneClickUpsell (OCU) is built specifically for Shopify Plus merchants and supports both pre-purchase upsell funnels (shown before checkout) and post-purchase upsells (shown after order confirmation). Its funnel builder is more sophisticated than ReConvert’s, supporting multi-step offer sequences and more granular trigger logic based on products purchased, cart value thresholds, and customer tags.

Pros: Full funnel coverage (pre and post-purchase); excellent analytics; built for high-volume stores; strong A/B testing; backed by Zipify’s own ecommerce brand (Organifi), meaning real-world testing underpins the feature set.

Cons: Shopify Plus requirement for pre-purchase funnels (non-Plus stores can only access post-purchase); higher price point; overkill for stores under $100,000/month revenue.

Best for: Shopify Plus merchants with high order volumes who want the most sophisticated upsell funnel builder available.

Frequently Bought Together: Best In-Product Cross-Sell

Pricing: Free plan available. Professional plan at $9.99/month.

This app, by Code Black Belt, replicates Amazon’s “Frequently Bought Together” widget on Shopify product pages. It uses AI to automatically recommend product bundles based on purchase history data, or allows you to manually curate recommendations. The bundle display shows a clear combined price discount, making the value proposition immediately apparent to shoppers.

Pros: Very affordable; automatic recommendations reduce manual setup; highly visible placement on product pages; bundle discount mechanic drives strong conversion; trusted by over 100,000 Shopify stores.

Cons: Limited to the product page placement; widget styling may require developer customisation to perfectly match some themes.

Best for: Stores with a broad, complementary product catalogue where bundle recommendations are naturally logical — electronics accessories, skincare sets, fitness equipment and consumables.

CartHook and AfterSell: Honourable Mentions

CartHook: Pricing from $50/month. CartHook specialises in post-purchase one-click upsells with a focus on conversion rate optimisation. Its offer builder supports product variants, subscription upsells and multi-step sequences. Strong choice for stores with subscription products as part of their mix.

AfterSell: Pricing from $7.99/month. A direct ReConvert competitor with a similar post-purchase focus. AfterSell’s interface is slightly simpler to configure and its pricing is marginally lower at low revenue volumes. A good alternative if ReConvert’s pricing model does not suit your store’s structure.

Frequently Asked Questions

What is a realistic AOV lift from Shopify upsell apps?

Well-configured upsell and cross-sell flows typically generate an AOV lift of 10–25%, depending on product catalogue, offer relevance and placement. Post-purchase upsells consistently outperform pre-purchase pop-ups in terms of conversion rate because the customer is in a confirmed buying mindset and there is no risk of cart abandonment. The most important variable is offer relevance — a £15 accessory recommendation on a £80 product will almost always outperform a generic “customers also bought” widget. Start by identifying your top 10 products and manually curating specific upsell and cross-sell recommendations for each.

Will upsell pop-ups hurt my conversion rate?

They can, if poorly implemented. The key risk is showing upsell offers before checkout in a way that distracts or frustrates customers at a critical decision point. Pre-purchase pop-ups that interrupt the add-to-cart flow or that show irrelevant products frequently increase cart abandonment. Post-purchase upsells, by contrast, appear after the transaction is complete — there is nothing left to lose, and the offer adds rather than interrupts. Our general recommendation is to start with post-purchase upsells (zero cart abandonment risk) before experimenting with product page or cart upsells.

Can I use multiple upsell apps at the same time?

Technically yes, but we recommend against running multiple post-purchase upsell apps simultaneously. Shopify’s post-purchase API allows only one app to control the post-purchase page — running two apps configured for the same placement will create conflicts and potentially show customers nothing at all. A better approach is to select one app that covers your highest-priority placement and configure it well, then add complementary apps for different placements (product page, cart, post-purchase) once the first is performing reliably.

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