When comparing the top tools for growing a Shopify store, Loox and Klaviyo come up again and again—but which one should you start with? After digging deep into how each tool works, what they’re best at, and how they fit into a store’s growth journey, the answer is clear: Loox and Klaviyo aren’t direct competitors—they’re complementary. If you want to boost both your conversion rate and customer retention, using both tools together is a proven strategy.
Loox vs Klaviyo: Quick Verdict
Loox – Best for building trust and conversions through photo and video reviews (Starts at $12.99/month)
Klaviyo – Best for driving repeat purchases and customer retention with smart email/SMS automation (Starts at $20/month)
In this guide, I’ll break down what makes each app valuable, and help you decide which one fits your current store goals. We’ll compare pricing, use cases, Shopify integration, and how to get the most value—whether you use one or both tools.
Key Takeaways
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Loox helps boost on-site conversion through review widgets, UGC, and photo/video social proof
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Klaviyo powers automated email/SMS flows that drive customer retention and lifetime value
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You don’t have to pick just one—many stores run Loox + Klaviyo together
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Loox reviews can trigger Klaviyo flows, giving you smarter post-purchase journeys
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Pricing scales differently: Loox by plan features; Klaviyo by email/SMS usage and contact list size
A Quick Comparison of Loox vs Klaviyo
Get a side-by-side look at what each tool is built to do and how it fits into your ecommerce growth stack.
| Loox | Klaviyo | |
|---|---|---|
| Overall focus | Review collection, visual UGC, trust-building | Customer messaging, retention, and lifecycle marketing |
| Best for | New stores needing social proof to improve conversion | Stores with order volume looking to improve repeat purchases and LTV |
| Pricing | Starts at $12.99/month | Starts at $20/month, scales with contacts and SMS usage |
| Key features | Photo/video reviews, review widgets, referrals, upsells | Email flows, SMS campaigns, audience segmentation, customer profiles |
| Shopify fit | Native Shopify app with 1-click widget install | Deep Shopify CRM integration, plus support for 300+ ecommerce apps |
| Trial | 14-day free trial | Free plan available for under 250 contacts and 500 emails/month |
The key takeaway here is that Loox supports conversion rate optimization by improving trust signals on your site, while Klaviyo focuses on customer retention by turning your existing traffic into long-term buyers through messaging.
What Loox Does Best

Loox is a dedicated review engine built for ecommerce stores, particularly those on Shopify. Its main goal is to help you collect visual reviews—photos and videos from real customers—then showcase them on your product pages in a way that boosts credibility and conversions.
Many stores struggle with collecting reviews at scale, especially when they rely on basic, text-only feedback. Loox solves that by incentivizing customers to submit photo or video reviews with small rewards like discounts or loyalty points. This kind of user-generated content (UGC) builds trust faster than any ad or product description can.
Here’s what makes Loox especially valuable:
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Visual Review Collection: After a purchase, customers receive an automated review request. With the right incentive, many are willing to add a photo or even a short video to their review. These visuals are proven to significantly increase trust and product appeal.
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Widgets for Social Proof: Loox makes it easy to place reviews on product pages, homepages, and even pop-ups. These placements improve conversion rates by showing real customer experiences at key decision-making moments.
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Referral and Upsell Features: Some Loox plans include tools to help you launch referral programs or simple upsells based on review behavior. It’s not just about trust—it’s also about growing your AOV.
In terms of pricing, Loox starts at $12.99/month, with higher tiers offering more features like email customization, advanced widgets, and integration with Klaviyo. This entry-level price point makes it highly accessible for new stores that need immediate trust signals to boost sales.
What Klaviyo Does Best

Klaviyo is a complete customer messaging platform built for ecommerce businesses. It combines email marketing, SMS campaigns, and customer segmentation into one system that drives repeat purchases and increases lifetime customer value.
If you already have traffic and your store is generating orders, Klaviyo helps you make more money from the audience you’ve already acquired. Rather than letting customers buy once and disappear, Klaviyo creates automated journeys to bring them back again and again.
Here’s what makes Klaviyo stand out:
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Advanced Flows: Klaviyo allows you to create custom flows triggered by events like an abandoned cart, a product view, or a completed purchase. These flows can contain multiple touchpoints across email and SMS to nudge users toward conversion.
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Customer Segmentation: You can build highly detailed audience segments based on behavior, value, and lifecycle stage. For example, you might create a segment of VIP customers who’ve spent over $500 and haven’t purchased in 60 days—then send them a special reactivation offer.
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Data Integration: Klaviyo integrates deeply with Shopify and tools like ReCharge, Gorgias, Loox, and others. This means your customer messaging is powered by real-time, synced data that reflects browsing behavior, order history, and even review activity.
Klaviyo’s pricing starts at $20/month, but most stores end up in the $45 to $60/month range once they scale up their email and SMS usage. Pricing is based on the number of contacts you have and the volume of messages sent.
Can You Use Loox and Klaviyo Together?
Yes—and it’s actually a very common strategy. These tools complement each other extremely well. While Loox helps you generate valuable UGC, Klaviyo helps you capitalize on that content by incorporating it into your customer flows.
Here’s how they can work in tandem:
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Send Review Requests via Klaviyo: Loox allows stores on certain plans to trigger review requests directly through Klaviyo’s flow builder. This gives you more control over the messaging and timing compared to Loox’s native request system.
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Use Review Data for Segmentation: When a customer submits a review—especially a photo review—Loox can send that event to Klaviyo. You can then create custom segments, like “submitted photo review,” and send special offers or UGC asks to that group.
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Automate Follow-Ups Based on Sentiment: For example, a positive review could trigger a thank-you email and a cross-sell offer, while a negative review might trigger a support ticket and an apology message. This lets you respond in real-time based on customer feedback.
According to Loox’s own help documentation, the integration between Loox and Klaviyo is available on their “Scale” and “Unlimited” plans, which are designed for high-growth stores looking to maximize automation.
Which One Should You Pick If You Can Only Choose One?
Sometimes budget or simplicity forces you to make a choice. If you can only choose one tool right now, here’s how to decide based on your store’s current stage.
Choose Loox If:
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Your conversion rate is low and product pages lack visual trust signals.
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You have very few customer reviews or your reviews are mostly plain text.
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Your products are visual in nature (e.g., apparel, skincare, home goods) and would benefit from customer images.
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You’re in the early stages of growth and need to build credibility fast.
Choose Klaviyo If:
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You already have a steady stream of orders and a decent-sized email list.
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You want to improve repeat purchase rate, retention, and customer LTV.
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You’re running paid traffic and want a more sophisticated post-purchase journey.
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You’re ready to build automation flows that bring customers back over time.
In a nutshell, Loox is your trust engine, and Klaviyo is your retention engine. Both are valuable, but depending on your needs, one might have more immediate ROI.
The Ideal Setup: Loox + Klaviyo Working Together
If you’re using both tools, here’s a simple but effective setup that can dramatically increase both your conversion rate and retention metrics.
5-Step Setup Checklist
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Install Loox and place review widgets across key conversion pages—product pages, homepage, and even collection pages. This creates immediate trust signals for new visitors.
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Turn on incentives for photo/video reviews inside Loox, but make sure the incentive is meaningful without attracting low-quality submissions. For example, a 10% discount works well in most niches.
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Connect Loox to Klaviyo using the official integration. Once connected, Loox will pass key review events (like review submitted, rating given, photo uploaded) to Klaviyo.
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Create 3 key flows in Klaviyo:
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Review request (triggered after delivery)
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Positive review = thank-you email + cross-sell offer
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Negative review = customer support path to fix the issue
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Segment your photo reviewers and treat them like VIPs. These customers are more engaged and more likely to become repeat buyers. You can invite them to future launches, early access promotions, or even ambassador programs.
With this setup, Loox builds social proof while Klaviyo ensures that your messaging is personalized and targeted, all based on actual customer behavior.
Pricing Breakdown: Loox vs Klaviyo
Here’s a pricing snapshot to help you understand the investment required.
| Tool | Starting Price | Scaling Factor | Notes |
|---|---|---|---|
| Loox | $12.99/month | Usage limits (emails/orders) | Best for stores that want simple, visual social proof |
| Klaviyo | $20–$45/month | Scales with email list size | Best for stores with traffic/orders who want automation |
For many stores, starting with Loox at $12.99/month delivers fast ROI. As your list grows and you’re ready to invest in email/SMS automation, moving to Klaviyo becomes a natural next step.
Final Thoughts: Use the Right Tool for the Right Job
Loox and Klaviyo solve two different problems—conversion and retention. Loox helps make your store feel trustworthy through real reviews and UGC. Klaviyo helps you build long-term relationships and drive repeat purchases with smart email/SMS flows.
If you’re trying to grow a successful Shopify store, using both tools together often delivers the best results. But if you have to choose, the right pick depends on your current challenge:
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If your site feels empty, unconvincing, or lacking in reviews, Loox can quickly improve trust and lift your conversion rate.
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If your sales are decent but customers don’t come back, Klaviyo can help you drive more repeat revenue and increase LTV.
As your store matures, investing in both tools creates a strong, data-driven ecommerce foundation that supports both growth and sustainability.