Shopify Upsell Apps: 7 Best Options + AI Alternative

35% of Amazon's revenue comes from upsells and cross-sells (McKinsey). Cart upsells increase average order value (AOV) by 10-30% on Shopify stores (Shopify data). Post-purchase upsells convert at 10-30% -- higher than pre-purchase offers.

If your store has a $60 AOV and you can increase it to $75 through upselling, that is 25% more revenue from the exact same traffic. No extra ad spend. No additional customers. Just more revenue per order.

Here are the 7 best Shopify upsell apps in 2026, what they cost, and an alternative most merchants do not know about.

Types of Shopify Upsells

Before comparing apps, understand the three types of upsells:

1. Pre-Purchase Upsells Shown on product pages or in the cart before checkout. Examples: "Frequently Bought Together," "You Might Also Like," size upgrades.

2. In-Cart Upsells Shown inside the cart drawer or cart page. Examples: "Add this for 20% off," free shipping threshold nudges.

3. Post-Purchase Upsells Shown on the thank-you page or in order confirmation. The customer has already paid, so these feel less pushy. They convert at 10-30% because the buying decision is already made.

Best strategy: Use all three. Pre-purchase for discoverability, in-cart for AOV bumps, post-purchase for high-margin add-ons.

The 7 Best Shopify Upsell Apps

1. ReConvert - Best for Post-Purchase Upsells

Pricing: Free plan available / $4.99-$14.99/month + commission Rating: 4.9/5 (5,000+ reviews)

What it does:

• Post-purchase upsell funnels on the thank-you page
• One-click upsells (no re-entering payment info)
• Birthday collector and surveys on thank-you page
• A/B testing for upsell offers

Best for: Stores wanting to maximize post-purchase revenue without disrupting the pre-purchase experience.

Pros:

• Strong post-purchase focus (where conversion is highest)
• Free plan for small stores
• Good analytics and A/B testing

Cons:

• Commission on upsell revenue (on paid plans)
• Limited pre-purchase features on lower tiers
• Can feel cluttered on the thank-you page if overused

2. Bold Upsell - Best for Advanced Upsell Funnels

Pricing: $9.99-$89.99/month Rating: 4.6/5 (1,500+ reviews)

What it does:

• Pre-purchase, in-cart, and post-purchase upsells
• Upsell funnels (if customer declines offer A, show offer B)
• Smart product recommendations based on cart contents
• Custom offer design and placement

Best for: Established stores wanting sophisticated upsell funnels with branching logic.

Pros:

• Full-funnel upselling (pre, in-cart, post)
• Conditional offers (show different upsells based on cart value)
• Integrates with Bold's other apps

Cons:

• Expensive at higher tiers ($89.99/month for full features)
• Steeper learning curve
• Adds significant JavaScript to your storefront

3. Frequently Bought Together - Best for Simple Cross-Sells

Pricing: $9.99/month Rating: 4.9/5 (2,500+ reviews)

What it does:

• Amazon-style "Frequently Bought Together" bundles
• AI-powered product recommendations (learns from purchase patterns)
• Bundle discounts ("Buy 2 together, save 10%")
• Customizable widget placement

Best for: Stores that want a straightforward cross-sell section without complex funnels.

Pros:

• Simple setup (install and it works)
• AI recommendations improve over time
• Clean, minimal design
• Affordable flat rate

Cons:

• Only does cross-sells (no upsells to premium variants)
• Limited post-purchase functionality
• One widget style (limited customization)

4. Zipify OneClickUpsell (OCU) - Best for High-Volume Stores

Pricing: $35-$75/month Rating: 4.7/5 (800+ reviews)

What it does:

• Post-purchase one-click upsells
• Pre-purchase upsell pages
• A/B split testing
• Revenue analytics dashboard

Best for: High-volume stores ($50K+/month) that need robust analytics and split testing.

Pros:

• Built by a 9-figure ecommerce brand (Ezra Firestone's team)
• Strong A/B testing
• Clean post-purchase experience
• Detailed revenue attribution

Cons:

• Expensive ($35-75/month)
• Overkill for small stores
• Focused more on post-purchase than pre-purchase

5. Honeycomb Upsell & Cross-sell - Best All-in-One

Pricing: Free plan / $49.99-$149.99/month Rating: 4.8/5 (600+ reviews)

What it does:

• Product page upsells
• Cart page upsells
• Post-purchase upsells
• Thank-you page offers
• AI-powered auto-recommendations
• A/B testing

Best for: Stores wanting one app to handle all upsell types across the entire customer journey.

Pros:

• Covers every upsell touchpoint
• AI recommendations out of the box
• Free plan for testing
• Good UI for managing offers

Cons:

• Paid tiers are expensive ($49.99-149.99/month)
• Heavy JavaScript load (covers many touchpoints)
• Can be overwhelming to configure

6. Cart X - Best Budget Upsell App

Pricing: Free for dev stores / $9.99-$29.99/month Rating: 4.8/5 (500+ reviews)

What it does:

• In-cart upsell popups
• Discount offers in the cart drawer
• Free shipping progress bar
• Product bundles
• Countdown timers on offers

Best for: Budget-conscious stores wanting in-cart upsells without spending $50+/month.

Pros:

• Affordable pricing
• Good in-cart popup design
• Includes free shipping bar (replaces a separate app)
• Simple to set up

Cons:

• Fewer features than premium options
• Limited post-purchase functionality
• Basic analytics

7. Selleasy - Best for Bundle Offers

Pricing: Free (under 50 orders/month) / $8.99-$16.99/month Rating: 4.9/5 (1,800+ reviews)

What it does:

• "Frequently Bought Together" widget
• Cart upsell add-ons
• Post-purchase upsell pages
• Product page cross-sell widgets
• Custom bundle offers

Best for: Stores that want bundle-focused upselling with generous free tier.

Pros:

• Free for stores under 50 orders/month
• Multiple widget styles
• Good design customization
• Covers pre, in-cart, and post-purchase

Cons:

• Revenue-based pricing can get expensive at scale
• Some widget styles limited to paid plans
• Mobile display could be better on some themes

Comparison Table

| App | Price/Month | Pre-Purchase | In-Cart | Post-Purchase | A/B Testing | |-----|------------|-------------|---------|---------------|-------------| | ReConvert | $0-14.99 | Limited | No | Yes | Yes | | Bold Upsell | $9.99-89.99 | Yes | Yes | Yes | Yes | | Frequently Bought | $9.99 | Yes | No | No | No | | Zipify OCU | $35-75 | Yes | No | Yes | Yes | | Honeycomb | $0-149.99 | Yes | Yes | Yes | Yes | | Cart X | $9.99-29.99 | No | Yes | Limited | No | | Selleasy | $0-16.99 | Yes | Yes | Yes | No |

The Hidden Cost: App Bloat

Every upsell app adds JavaScript to your store. Here is the typical impact:

| App | Estimated JS Size | Load Time Impact | |-----|-------------------|-----------------| | ReConvert | 80-150KB | 50-80ms | | Bold Upsell | 120-250KB | 70-130ms | | Frequently Bought | 60-120KB | 35-70ms | | Zipify OCU | 100-200KB | 60-110ms | | Honeycomb | 150-300KB | 80-150ms | | Cart X | 80-150KB | 50-80ms | | Selleasy | 70-140KB | 40-75ms |

At 7% conversion loss per 100ms of page delay, the upsell app intended to increase your revenue could be reducing it through slower page loads. A heavy upsell app adding 150ms of load time costs you roughly 10% in conversions -- potentially negating the AOV increase.

The AI Alternative: Native Upsells Without Apps

Instead of installing an app, you can build upsell functionality directly into your theme. This eliminates the JavaScript overhead entirely.

With EcomCoder:

Pre-purchase cross-sells:

"Add a 'Frequently Bought Together' section on product pages. Show 3 related products from the same collection. Include product image, title, price, and 'Add to Cart' button for each. Add an 'Add All to Cart' bundle button with a 10% discount message."

In-cart upsells:

"When a customer adds an item to the cart, show a slide-out cart drawer with the cart contents at the top and 2 recommended products at the bottom. Include 'Add to Order' buttons for each recommendation."

Free shipping nudge:

"Add a progress bar to the cart showing how much more the customer needs to spend for free shipping. Our threshold is $75. Show a congratulations message when they qualify."

Time to implement: 15-20 minutes for all three.

What you get:

• Native Liquid code (no external JavaScript)
• Zero page speed impact
• Full design control (matches your theme perfectly)
• No monthly fees beyond your EcomCoder subscription
• Easily modifiable ("Change the bundle discount to 15%")

What you do not get:

• AI-powered product recommendations (native code uses collection-based logic, not purchase history)
• Post-purchase one-click upsells (requires Shopify checkout extensibility)
• Automated A/B testing (you would need to test manually)

When to Use an App vs. AI-Generated Native Code

Use an app when you need:

• AI-powered product recommendations that learn from purchase patterns
• Post-purchase one-click upsells on the checkout/thank-you page
• Built-in A/B testing with statistical significance
• Complex conditional logic (if cart > $100, show offer A; otherwise show offer B)

Use AI-generated native code when you need:

• Simple "Frequently Bought Together" based on collections or manual selection
• Cart drawer upsells with static product recommendations
• Free shipping progress bars
• Basic upsell UI without ongoing monthly costs
• Maximum page speed (zero additional JavaScript)

The hybrid approach: Many successful stores use both. A lightweight app for post-purchase upsells (where the impact is highest) and native code for pre-purchase cross-sells (where page speed matters most).

How to Maximize Upsell Revenue

Regardless of which approach you choose, follow these principles:

1. Make upsells relevant. Showing a phone case when someone is buying shoes does not work. Related products from the same category convert best.

2. Limit options. Three upsell suggestions is ideal. More than five causes decision paralysis. Amazon shows 4-6 products in their "Frequently Bought Together" section for a reason.

3. Bundle with discounts. "Buy both and save 10%" converts better than showing products side by side with no incentive. Even a small discount motivates the bundle purchase.

4. Position strategically. Pre-purchase upsells work best on the product page below the Add to Cart button. In-cart upsells work best in the cart drawer. Post-purchase upsells work best on the thank-you page.

5. Test and iterate. Start with one upsell type, measure the AOV impact for 30 days, then add more. Do not deploy all upsell types simultaneously -- you will not know what is working.

Conclusion

Upselling is one of the most effective ways to increase revenue without increasing traffic. The right approach depends on your store size, budget, and technical needs.

For most Shopify stores, start with a simple "Frequently Bought Together" section on product pages. This alone can increase AOV by 10-15%. Then add cart upsells and post-purchase offers as your volume grows.

Whether you choose an app or native code, the key is relevance. Show products that genuinely complement what the customer is buying. Irrelevant upsells annoy shoppers and hurt conversion.

Start Free Trial -- Add native upsells to your store in minutes.

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Frequently Asked Questions

How much can upselling increase my revenue?

Most Shopify stores see a 10-30% increase in average order value from effective upselling. If your AOV is $60 and you increase it to $72 (20% lift), that is $12 extra per order. At 500 orders/month, that is $6,000/month in additional revenue.

Do upsell apps slow down my store?

Yes. Every app adds JavaScript to your storefront. A typical upsell app adds 60-300KB of JavaScript, which translates to 35-150ms of additional load time. At 7% conversion loss per 100ms, the speed penalty can partially offset the AOV gains.

What is the difference between upselling and cross-selling?

Upselling encourages buying a higher-priced version of the same product ("Upgrade to the premium model for $20 more"). Cross-selling suggests complementary products ("Customers who bought this shirt also bought these pants"). Both increase AOV, but they work differently.

When should I show upsell offers?

Pre-purchase upsells work best on product pages below the Add to Cart button. In-cart upsells work best when the customer opens their cart or reaches the cart page. Post-purchase upsells perform best on the thank-you page when the buying decision is already made.

Can I do upsells without any app?

Yes. Simple cross-sell sections ("You Might Also Like," "Frequently Bought Together") can be built directly into your Shopify theme using Liquid code. AI tools like EcomCoder generate this code from plain English descriptions. The trade-off is that native code does not offer AI-powered recommendations or automated A/B testing.