The Best Shopify Upsell Apps in 2025

Rebuy vs CartHook vs Honeycomb and More

If you’re trying to boost your average order value (AOV) or get more conversions with better product offers, upsell apps are one of the quickest ways to get there. The good news? Shopify gets it, so there are plenty of tools to choose from. The tricky part is figuring out which one actually fits what you need.

Luckily, you found us.

In this guide, we compare five top-rated Shopify upsell apps based on:

• Setup and onboarding
• Developer involvement
• Design customization
• Learning curve
• Core features and differentiators

The idea being, with a little more information, you can make the decision that’s right for you. So, let’s break down what some of our favorite tools offer, and how to choose the best upsell app for your Shopify store.

1. Rebuy Personalization Engine

Best for: Shopify brands investing in advanced AI-powered upsell logic and dynamic personalization

Rebuy is one of the most comprehensive upsell tools on the market, combining AI product recommendations, dynamic cart and checkout features, and deep integrations with the rest of your tech stack (aka the tools and systems your store runs on).

Key Features:

• • AI-driven upsell and cross-sell widgets
  • Personalized product recommendations
  • Post-purchase upsells and reorder flows
  • Klaviyo, Okendo, and Shopify Checkout integration

Setup:

• • Guided onboarding via Rebuy Launch Program
  • A developer isn’t required, but could be helpful for advanced custom logic

Customization:

• • High design flexibility across widgets and placement
  • Personalization logic can be tailored by and to customer behavior

When to Use:

If you’re scaling a high-volume Shopify store and need intelligent, behavior-based product recommendations and upsell flows, Rebuy delivers performance and scalability. We’re big fans.

2. OneClickUpsell (Zipify OCU)

Best for: Merchants who want seamless, high-converting one-click upsell offers at every stage, pre-purchase, post-purchase, and even in-checkout (the latter only for Shopify Plus merchants), with deep customization and no coding required.

OCU’s core focus is on creating and managing upsell funnels, but it can also integrate with Zipify Pages and PageFly to trigger upsell popups on your landing pages.

Key Features:

• • AI-powered pre- and post-purchase upsell funnels
  • Built-in Slide Cart Drawer with upsells, free shipping bar, banners, subscriptions (with supported apps), and more
  • Customizable design, A/B testing, and analytics
  • Unlimited upsells and cross-sells, with smart logic to skip already-purchased items

Setup:

• • 100% no-code setup
  • Launch full funnels in a few hours

Customization:

• • Very Strong. You can fully control layout, copy, and branding pretty effortlessly

When to Use:

If you want to maximize AOV with frictionless, one-click upsells at every stage of the customer journey, Zipify OCU is one of the leading choices for Shopify in 2025. Heads up, pricing is tiered and based on upsell revenue. Just something to consider!

3. CartHook

Best for: Shopify merchants looking for a quick, budget-friendly way to test simple post-purchase upsells.

CartHook is a no-frills upsell app designed for speed and simplicity. While it lacks deep features, it’s useful for stores just starting to experiment with AOV strategies.

Key Features:

• • Post-purchase upsells
  • Drag-and-drop builder
  • A/B testing and analytics
  • Basic visual controls

Setup:

• • Fast, plug-and-play
  • No development required

Customization:

• • Basic visual controls; best suited to standard Shopify themes

When to Use:

CartHook is ideal for merchants who want a minimal, affordable upsell tool to test core functionality without investing in larger systems.

4. Honeycomb Upsell 

Best for: Brands interested in funnel logic (aka the rules that guide what offers show up when) at multiple touchpoints, analytics, and ease of use, all at a mid-tier price point.

Honeycomb offers a balance of functionality and accessibility. With native Shopify integration and visual funnel builders, it’s a strong choice for brands scaling their upsell strategy.

Key Features:

• • Supports upsell funnels on product, cart, checkout (Shopify Plus), and thank-you pages
  • Upsell funnels based on cart logic, including one-click post-purchases
  • Google Analytics and Facebook Pixel support
  • A/B testing for upsell offers
  • Works with Klaviyo and other apps

Setup:

• • No developer needed
  • Designed for fast implementation with pre-built templates

Customization:

• • Moderate. Visual editor lets you tailor offer pages

When to Use:

If you want to go beyond single-product popups and build smarter upsell funnels based on cart conditions, Honeycomb is a strong fit.

5. Frequently Bought Together

Best for: Merchants who want a fast, automated bundling solution without complex funnels

Frequently Bought Together uses machine learning to bundle and recommend products that are commonly purchased together. It’s built for speed, simplicity, and results.

Key Features:

• • AI-based product bundles
  • Bundle discounts and custom display options
  • Shopify POS compatibility
  • Multilingual and mobile-friendly

Setup:

• • Instant deployment. Just install and configure!
  • No dev work needed

Customization:

• • Limited to layout, order, and visibility preferences

When to Use:

If you want to automate product recommendations and bundling with minimal time investment, this is a reliable and highly rated app for Shopify stores.

You’ve got options. Here’s how they stack up:

So what’s next?

There are tons of other highly rated upsell and bundling apps available for Shopify as well, including Bold Upsell, Candy Rack, ReConvert, In Cart Upsell, Fast Bundle, and more, so it’s worth exploring the full Shopify App Store to find the best fit for your store’s specific needs.

But choosing the right upsell app is only part of the equation. How you use it matters more than which tool you pick. That’s where strategy and site optimization come in.

If your store is seeing traffic but struggling to convert, or if upsells are underperforming, we recommend starting with a Conversion Audit. We’ll identify high-impact fixes and help you implement upsell flows that make sense for your customers.

Want to explore options together?

Book some time with us today →