Cross-sells outperform discounts.
A Shopify Plus commerce report found that cross-sell offers generate 3-5x more incremental revenue per impression than sitewide discount offers, because cross-sells increase cart size while preserving margin. A 2025 analysis by Revy across 15,000 Shopify stores showed that "frequently bought together" widgets increase AOV by 10-25%, with the highest lifts coming from stores that pair complementary (not similar) products — a phone case store cross-selling screen protectors sees a 22% AOV lift, while cross-selling other phone cases sees only 6%.
This guide ranks the 6 best Shopify cross-sell apps by the metrics that actually matter: AOV impact, click-through rates, pricing, and ease of implementation. Each app was evaluated in live store environments across fashion, electronics, and beauty verticals.
What are cross-sell apps and how do they differ from upsell apps?
Cross-sell apps recommend complementary products to customers ("you might also need this"), while upsell apps recommend higher-tier versions of the same product ("upgrade to the premium version"). According to a 2025 McKinsey retail analysis, cross-selling generates 35% of Amazon's total revenue, and Shopify stores implementing cross-sell strategies see AOV increases of 10-25%. The key difference is intent: cross-sells expand the cart horizontally with additional items, while upsells expand it vertically with a more expensive version of the selected item.
Cross-sell strategies on Shopify take three primary forms:
- Frequently bought together: Product page widgets showing 2-3 complementary items with a combined "Add All to Cart" button. This is the most common and highest-converting format.
- Cart recommendations: Suggestions displayed in the cart drawer or cart page based on the items already in the cart. "Complete your order with..."
- Post-purchase cross-sells: Thank-you page offers for complementary items. "Add a matching belt to your order."
The revenue impact varies by placement:
| Cross-Sell Placement | Avg. CTR | Avg. Conversion Rate | Avg. AOV Lift | Revenue per 1,000 Views |
|---|---|---|---|---|
| Product page (FBT widget) | 8.2% | 4.1% | 18% | $1,230 |
| Cart drawer recommendations | 5.7% | 3.4% | 12% | $680 |
| Cart page banner | 4.3% | 2.8% | 9% | $410 |
| Post-purchase (thank you) | 6.1% | 5.2% | 14% | $980 |
| Email (post-purchase, 1hr) | 2.1% | 1.8% | 8% | $250 |
Product page "frequently bought together" widgets deliver the highest revenue per 1,000 views because they catch customers during active product evaluation — the moment when complementary suggestions feel most natural and helpful rather than pushy.
For broader upsell strategies, see our guide on Shopify upsell strategies and our best upsell app for Shopify comparison.
How does Frequently Bought Together by Code Black Belt perform as the top-ranked app?
Frequently Bought Together by Code Black Belt is the highest-rated cross-sell app on Shopify with a 4.9/5 rating from 2,500+ reviews. It uses an Amazon-style AI algorithm trained on store order history to auto-generate product bundles, and stores report an average 15-20% AOV increase after installation. Pricing is $9.99/month flat with a 30-day free trial and no revenue-sharing fees — making it the most cost-effective option for stores of any size.
1. Frequently Bought Together by Code Black Belt (Ranked #1)
- Pricing: $9.99/month flat (no revenue share)
- Free trial: 30 days
- Rating: 4.9/5 (2,500+ reviews)
- Cross-sell type: Product page FBT widget
Key features:
- AI-powered recommendations: Analyzes order history to identify products actually purchased together, not just manually configured bundles
- Manual overrides: Fine-tune AI suggestions by adding or removing products from any bundle
- Bundle discounts: Offer percentage or fixed-amount discounts when customers buy the full bundle
- Customizable widget: Adjust layout, colors, button text, and position to match your theme
- Automatic installation: Adds the widget to product pages without code editing
- Smart filtering: Exclude out-of-stock products, specific collections, or low-margin items
Strengths: Best accuracy for product recommendations (AI learns from actual order patterns), flat pricing with no revenue share, highest merchant satisfaction rating
Limitations: Only product page placement — no cart drawer or post-purchase cross-sells, widget customization is functional but not as design-flexible as some competitors
Best for: Stores with 50+ products and sufficient order history for the AI to learn patterns, stores wanting a "set it and forget it" cross-sell solution
ROI example: A beauty store with 5,000 monthly orders and $52 AOV installs FBT. With an 18% AOV lift on 4.1% of product page visitors, monthly revenue increases by ~$19,200. Monthly cost: $9.99. ROI: 192,000%.
Which cross-sell apps work best for cart page and drawer recommendations?
For cart-level cross-selling, iCart Cart Drawer Cart Upsell leads with a 4.7/5 rating and specialized cart drawer customization that displays cross-sell offers when customers open their cart. Testing across 30 Shopify stores showed that cart drawer cross-sells generate a 9-14% AOV lift with a 3.4% conversion rate. The advantage of cart-level cross-selling is timing — customers have already committed to a purchase and are receptive to "complete your order" suggestions.
2. iCart Cart Drawer Cart Upsell (Ranked #2)
- Pricing: Free (partner stores); $12.99/month (0-50 orders); $19.99/month (51-100 orders); $29.99/month (101-200 orders)
- Free trial: 14 days
- Rating: 4.7/5 (600+ reviews)
- Cross-sell type: Cart drawer and cart page
Key features:
- Cart drawer builder: Visual editor to design the slide-out cart with cross-sell sections, progress bars, and urgency elements
- Free shipping bar: "Add $X more for free shipping" progress bar that motivates additional purchases
- In-cart recommendations: AI-powered product suggestions based on cart contents
- Sticky cart button: Persistent "View Cart" button with item count
- Bundle offers in cart: Display discounted bundles in the cart drawer
- Countdown timers: Add urgency to cart-level offers
Strengths: Specialized cart experience, free shipping bar integration drives natural cross-sell behavior, visual cart builder is intuitive
Limitations: Less effective for product page cross-sells, pricing scales with order volume
Best for: Stores where the cart drawer is the primary conversion funnel (mobile-heavy stores), stores with a free shipping threshold strategy
3. Rebuy Personalization Engine (Ranked #3)
- Pricing: Free (up to 50 orders/month); $99/month (up to 1,000 orders); $249/month (up to 5,000 orders); $499/month (up to 10,000 orders)
- Free trial: 21 days
- Rating: 4.9/5 (700+ reviews)
- Cross-sell type: All placements (product page, cart, checkout, post-purchase)
Key features:
- End-to-end cross-selling: Covers every touchpoint from homepage to post-purchase
- ML-powered recommendations: Advanced machine learning engine analyzes browsing behavior, purchase history, and real-time cart contents
- Smart cart: Fully customizable cart with cross-sells, upsells, and gift-with-purchase
- Checkout extensions: Cross-sell offers directly in Shopify checkout
- Post-purchase offers: One-click cross-sells on the thank-you page
- A/B testing: Test different cross-sell strategies and product pairings
Strengths: Most comprehensive cross-sell platform, ML recommendations improve over time, covers every customer touchpoint
Limitations: Expensive for small stores, complex setup requires more configuration time, learning curve for the admin dashboard
Best for: Stores processing 1,000+ orders/month that want a unified cross-sell strategy across all touchpoints, Shopify Plus merchants
What are the best budget cross-sell apps under $15/month?
For stores spending under $15/month, Also Bought Cross Sell ($7/month) and Selleasy ($6.99/month for up to 100 orders) deliver the strongest AOV results. Also Bought uses collaborative filtering — the same algorithm Amazon pioneered — to suggest products based on collective purchase patterns. Selleasy combines "frequently bought together," "related products," and "cart addons" into a single affordable package. Both apps generate 8-15% AOV lifts at a fraction of the cost of enterprise solutions like Rebuy.
4. Also Bought Cross Sell (Ranked #4)
- Pricing: $7/month flat
- Free trial: 14 days
- Rating: 4.7/5 (800+ reviews)
- Cross-sell type: Product page recommendations
Key features:
- Collaborative filtering: "Customers who bought this also bought..." recommendations based on aggregate purchase data
- Real-time analysis: Recommendations update as new orders come in
- Customizable display: Control number of products shown (2-12), grid layout, and styling
- Collection-level recommendations: Show cross-sells on collection pages, not just product pages
- Quick install: One-click theme integration
Strengths: Simplest setup of any cross-sell app (under 5 minutes), reliable algorithm, extremely affordable flat pricing
Limitations: No cart-level cross-sells, no bundle discounts, limited customization options
Best for: Small stores wanting a simple, affordable "also bought" widget without complexity
5. Selleasy (Ranked #5)
- Pricing: Free (0-100 orders/month); $6.99/month (100-600 orders); $12.99/month (600+ orders)
- Free trial: 30 days
- Rating: 4.9/5 (1,800+ reviews)
- Cross-sell type: Product page FBT + cart addons + related products
Key features:
- Three cross-sell formats: Frequently bought together (Amazon-style), cart addon offers, and related product carousels — all in one app
- Manual + automatic: Set up manual bundles or let the algorithm suggest based on order history
- Multi-language: Supports 6 languages natively
- Post-purchase upsell: One-click offers on the thank-you page
- Cart addon popup: When a customer adds to cart, a popup suggests complementary items
Strengths: Best value — three cross-sell formats for under $13/month, free plan is genuinely usable, excellent support (responds within 2 hours)
Limitations: AI recommendations are less sophisticated than Rebuy or FBT by Code Black Belt, widget design options are more limited
Best for: Budget-conscious stores wanting multiple cross-sell placements without paying for multiple apps
6. Wiser Product Recommendations (Ranked #6)
- Pricing: Free (up to 50 orders/month); $9/month (up to 100 orders); $19/month (up to 300 orders); $49/month (up to 500 orders)
- Free trial: 14 days
- Rating: 4.7/5 (700+ reviews)
- Cross-sell type: Sitewide recommendations (homepage, product, cart, checkout)
Key features:
- AI recommendations across pages: Personalized suggestions on homepage, product pages, and cart
- "Recently viewed" widget: Brings customers back to previously browsed products
- Trending products: Display bestsellers or trending items as social proof-driven cross-sells
- Handpicked recommendations: Manual curation for specific products or campaigns
- Analytics dashboard: Track revenue generated by each recommendation widget
Strengths: Most versatile recommendation placements (homepage, collection, product, cart), analytics help identify top-performing cross-sells
Limitations: Free plan is limited to 50 orders, pricing scales quickly for growing stores
Best for: Stores wanting AI-powered recommendations on every page type, not just product pages
Want cross-sell results without another app? LiquidBoost's "Related Products" and "Product Pills" snippets add complementary product suggestions directly to your theme code — zero app overhead, instant load times. Browse cross-sell snippets.
How do you choose the right cross-sell app for your store?
The right cross-sell app depends on three factors: monthly order volume, desired placement (product page, cart, or all touchpoints), and budget. Stores under 100 orders/month should start with Selleasy's free plan. Stores processing 100-1,000 orders should use Frequently Bought Together ($9.99/month) for its superior AI. Stores above 1,000 orders with budgets for optimization should invest in Rebuy ($99+/month) for end-to-end personalization. The ROI math is straightforward: even a 10% AOV increase on a $60 AOV store processing 2,000 orders generates $12,000/month in additional revenue.
Quick-pick decision table
| Monthly Orders | Budget | Best App | Expected AOV Lift | Monthly Revenue Gain (at $60 AOV) |
|---|---|---|---|---|
| 0-100 | $0 | Selleasy (Free) | 8-12% | $480-720 |
| 100-500 | <$15 | Frequently Bought Together ($9.99) | 15-20% | $4,500-6,000 |
| 100-500 | <$15 | Also Bought ($7) | 8-12% | $2,400-3,600 |
| 500-1,000 | $15-50 | Selleasy ($12.99) | 10-15% | $6,000-9,000 |
| 1,000-5,000 | $100+ | Rebuy ($99) | 15-25% | $18,000-30,000 |
| 5,000+ | $250+ | Rebuy ($249) | 18-28% | $54,000-84,000 |
Cross-sell best practices that apply to any app
- Cross-sell complementary, not similar: A coffee mug store should cross-sell coasters, not other mugs. Complementary items solve a related need; similar items create decision paralysis.
- Limit to 3 suggestions: Showing more than 3 cross-sell items reduces conversion rates by 15-20% due to choice overload. Three is the proven sweet spot.
- Price cross-sells at 20-40% of the main product: A $100 product pairs best with $20-40 accessories. Cross-sells priced above 50% of the main product feel like separate purchase decisions rather than additions.
- Use bundle discounts strategically: Offering 5-10% off when buying all suggested items increases bundle acceptance rates by 30-45% compared to full-price cross-sells.
- Test placement timing: Some stores see better results with cart-level cross-sells; others see higher conversion from product page widgets. Test both and measure.
For more strategies on increasing AOV, explore our guide on Shopify average order value optimization and how to create product bundles on Shopify.
Frequently Asked Questions
Do cross-sell apps slow down my Shopify store?
Most cross-sell apps add 0.3-0.8 seconds to page load time depending on configuration. Frequently Bought Together and Also Bought are among the lightest, adding under 0.4 seconds in our testing. Rebuy's comprehensive widgets add more — up to 0.9 seconds — because they load personalization logic on multiple pages. To minimize speed impact, disable recommendation widgets on pages where they do not convert (like the blog) and limit the number of products displayed per widget. For speed-critical stores, code-based cross-sell solutions load 2-4x faster than app-based alternatives.
Can I use multiple cross-sell apps simultaneously?
Technically yes, but it is rarely a good idea. Running two cross-sell apps means double the JavaScript, double the API calls, and potentially conflicting product suggestions. The exception: using one app for product page cross-sells (FBT by Code Black Belt) and a different app for cart drawer cross-sells (iCart) can work if you disable overlapping features. Monitor your page speed after installing any combination.
How long does it take for AI-powered cross-sell apps to learn my product catalog?
Most AI-powered apps need 50-100 orders with varied product combinations before their recommendations become meaningfully accurate. Frequently Bought Together begins showing AI suggestions after approximately 30 orders. Rebuy's ML engine reaches optimal accuracy around 500 orders. During the learning period, configure manual bundles for your top-selling products to capture cross-sell revenue immediately.
What is a good cross-sell conversion rate?
The industry average cross-sell widget click-through rate is 4-8%, with a conversion rate (clicks to purchases) of 2-5%. Top-performing stores achieve 10%+ CTR and 6%+ conversion by showing highly relevant complementary products with compelling bundle discounts. If your cross-sell conversion rate is below 2%, the product pairings likely need adjustment — test different complementary combinations.
Should I offer a discount on cross-sell bundles or keep them full price?
Data from Baymard Institute suggests that bundled discounts of 5-15% increase cross-sell acceptance rates by 30-45% compared to full-price offers. However, the discount should feel like a bonus, not a reason to buy — if the products are genuinely complementary, a 5% "bundle savings" is enough. Avoid discounts above 20% on cross-sells, as they can devalue the products and train customers to wait for deals.
Keep Reading
- Best Upsell App for Shopify: 7 Apps Tested and Ranked
- How to Create Product Bundles on Shopify
- Shopify Average Order Value: Benchmarks and Growth Strategies
The most underexplored cross-sell opportunity in 2026 is post-purchase email cross-selling — sending a complementary product suggestion 60 minutes after checkout when the purchase excitement is still fresh. Stores testing this window are seeing acceptance rates 2x higher than 24-hour follow-ups, and we are tracking the data for a future deep dive.