Best Review Apps That Integrate With Klaviyo [2026]

Most Shopify merchants use review apps simply to get social proof for their product pages. But they can actually provide more value to help you build solid customer retention and repeat purchase campaigns when connected to Klaviyo.

In this article, we’ll compare the best review apps that integrate with Klaviyo, show you how to use review data inside your flows, and help you pick the right one for your store.

How to Evaluate Review Apps for Klaviyo

Before we talk about each app, we want to share the aspects you need to check: review features, integration, email use cases, and whether the app fits your store.

1. Review Collection Options

Since this is about review apps, you need to know how good the app is at collecting reviews and feedback. You also want to check if it supports photo and video reviews, because these are the most effective content for social proof.

Plus, check if there’s a limit on how many reviews you can collect or requests you can send. It’s a huge factor to consider in terms of “scalability.”

2. Klaviyo Integration Depth

Integration with Klaviyo allows you to set up email flows that reach customers at the right time. But you need to check whether the app connects natively (no extra tools required) or only offers a connection through webhooks or third-party tools.

Shallow integration may result in slower and less accurate data compared to native integration. Meanwhile, those apps that offer native integrations are more timely and reliable.

You should also go for an app that syncs review data, events, profile fields, and custom properties into Klaviyo, because those will power your segmentation and flow personalization.

3. Email Marketing Use Cases

Which review activity and data does the app let you use inside Klaviyo? Some important emails you should be able to send with it are:

• Review reminders
• Social proof campaigns
• Recovery emails for low ratings

4. Shopify Store Fit

And of course, don’t forget to choose an app that matches your store size and order volume. Check which ones offer a free plan (so you can try it first), but also have paid and enterprise tiers that allow you to scale without hitting walls on review volume, request limits, or feature access.

Perfect. You now know the criteria; it’s time to learn about the apps.

Quick Comparison of the Best Review Apps that Integrate with Klaviyo

Here’s a simple comparison table of the best Klaviyo e-commerce marketing customer reviews apps we picked for you:

Best Review Apps That Integrate With Klaviyo

You now have an idea of the review apps in general. Now, here’s a more detailed description of each:

1. TrustWILL Product Reviews

Best for: Shopify review collection connected to Klaviyo retention flows

TrustWILL Reviews & UGC offers you tools to collect, manage, and make customer feedback visible to your possible clients (in the most appealing way). It can help you build a credible business that’ll get more sales and attract new customers better. 

Klaviyo integration fit

You connect TrustWILL Reviews & UGC to Klaviyo through an API key from your Klaviyo settings. Then, two metrics will be available to your flow builder to let you set up automated review request flows and follow-up reminders.

If you set up your email templates correctly, it’ll pass events like customer name, order ID, product title, product image URL, and a direct review URL for each item.

You get to send personalized and accurate review request emails for the exact product a customer bought. And top it off with a CTA button that takes them straight to the review form.

Best Klaviyo flow use cases

• Post-purchase review request flows
• Review reminder flows for non-responders

Review value

The reviews you collect here, whether its text, photo, and video content, can be used in Klaviyo retention workflows. It gives you accurate data you can use for repeat purchase and retention campaigns. 

Besides that, TrustWILL allows you to display them with AI-powered summaries and sync with Google review snippets for better reach. 

Limitations to consider

• Event and template setup requires some configuration on your end
• May not cover deeper enterprise review needs like syndication or advanced UGC workflows

Choose TrustWILL if you want post-purchase review requests and reminders handled through Klaviyo, with real product data pulling into each email automatically.

💡 Learn more how to ask for customer reviews, the right way, at the right time. 

2. Klaviyo Reviews 

Best for: Klaviyo-native review collection and email/SMS campaign personalization

Klaviyo Reviews is a native option for review management. Besides collecting and displaying reviews, it also allows you to use the data for your email/SMS campaigns.

Klaviyo fit

Since it’s a native feature, your review data goes straight into customer profiles once collected. Klaviyo Reviews also lets you use pre-built flows for review requests and add custom questions for more specific feedback.

Best Klaviyo flow use cases

• Automated review request flows via email or SMS
• Segment-based campaigns from review ratings and custom question data

Review value

Star ratings, written reviews, and custom question responses are all available inside Klaviyo. And you can use them for more targeted email marketing campaigns (or resolutions).

Limitations to consider

• Can feel basic and offer fewer features than specialized review apps (like collecting video reviews or UGC marketing)
• Limited customizability with review widgets

Choose Klaviyo Reviews if you want to enjoy basic review features without needing to pay for a separate tool.

3. Judge.me Product Reviews 

Best for: Affordable review collection for any ecommerce platform at any stage of growth

Judge.me is a popular review app on Shopify known for its “unlimited reviews” collection feature. It also uses AI to surface common topics and sentiment from all your reviews. So, you get the best gist of what your customers actually think (and what you have to improve). 

Klaviyo integration fit

Judge.me connects with Klaviyo through review events that trigger automated email flows. With it, you can:

• Send review requests after a purchase
• Trigger follow-up emails (when a new review or Q&A is submitted)
• Pull product ratings, top reviews, and UGC directly to Klaviyo emails

Best Klaviyo flow use cases

• Review request flows triggered by Judge.me events
• Follow-up flows after a new review or Q&A is submitted

Review value

Unlimited reviews, photo and video galleries, AI summaries, and star ratings within your store that can work together to build solid social proof that’ll influence more shoppers to buy.

Limitations to consider

• Klaviyo integration depth is not as detailed as native or purpose-built options
• Advanced automation may require additional setup depending on your plan

Choose Judge.me if you want a full-featured review app with no collection limits. 

4. Loox Product Reviews

Best for: Photo and video review collection for brands where visuals drive purchase decisions

Loox is a great review app option if your goal is to display beautiful photo and video reviews. Besides the usual feature, it offers delivery-based email timing and incentives that you can use to roll in (more) feedback. 

Klaviyo integration fit

Loox-Klaviyo integration gives you three automated email flows out of the box: review request emails triggered when an order meets your set timing, thank-you emails for positive reviews, and “sorry to hear” emails for negative ones. All of it runs automatically based on what your customers submit in Loox.

Best Klaviyo flow use cases

• Photo review request flows
• Post-review follow-up flows based on rating outcome

Review value

The customer photos and product images you can collect with Loox give more convincing social proof material for your brand. 

Limitations to consider

• May not be the best option if your focus is on written feedback
• Some useful features (like unlimited review requests) is only available on the highest plan.

Choose Loox if your products sell better when customers can see real photos and videos from other buyers.

5. Yotpo Product Reviews 

Best for: Managing reviews, UGC, and loyalty strategies in multiple channels

Yotpo is a retention platform that covers reviews, UGC, loyalty, and SMS. Its reviews feature helps you collect and display customer feedback with AI-driven tools that surface the most relevant content to shoppers at the right moment.

Klaviyo integration fit

Yotpo connects with Klaviyo to enrich your campaigns with review, loyalty, and subscription data all at once. You can showcase top customer reviews directly inside Klaviyo emails, create segments based on review scores, and trigger follow-ups for positive or negative submissions automatically.

Best Klaviyo flow use cases

• Review request and follow-up flows
• Segment-based campaigns from review scores and loyalty data

Review value

Yotpo brings reviews, UGC, and loyalty data together in one place. That gives larger brands more signals to work with when building retention campaigns across email, SMS, and paid channels.

Limitations to consider

• Pricing is on the higher side (compared to the other review apps here)
• Set up and feature depth may be more than small stores actually need

Choose Yotpo if you’re running a larger operation and want review data connected to loyalty and SMS inside your Klaviyo workflows.

6. Reviews.io

Best for: Flexible product and company review collection with deep Klaviyo segmentation

Reviews.io is a reviews and UGC platform that collects product reviews, company reviews, and photo and video UGC through automated email and SMS requests. It also displays them across your site, Google, and social with customizable widgets.

Klaviyo integration fit

When you integrate Reviews.io with Klaviyo, 9 review tracking events get pushed into every customer profile. You can segment by sentiment, rating, or down to a specific SKU, pull 5-star reviews and UGC photos into any email template, and branch flows automatically based on review outcome.

Best Klaviyo flow use cases

• Sentiment-based flow branching for positive and negative reviews
• UGC and review highlights pulled into abandoned cart or post-purchase emails

Review value

Reviews.io collects detailed written feedback, star ratings, photo and video UGC, and even survey responses. On top of that, you can re-engage customers who left a 5-star review but haven’t bought again by surfacing their own review back to them in a personalized email.

Limitations to consider

• Advanced integration features may require checking plan access before committing
• Better suited for brands that want to do more with review data than just collect it

Choose Reviews.io if you want detailed review data feeding into Klaviyo segments and email content, not just basic review collection.

7. Okendo Reviews 

Best for: Customer insights and review-based segmentation for Klaviyo flows

Okendo is a next-generation review platform built around AI. It uses AI to automate workflows, boost discoverability, and gather customer responses you can use to improve brands’ performance.

Klaviyo integration fit

Okendo syncs customer attributes like preferences, points balance, and even referral activity to Klaviyo profiles. You can trigger personalized flows based on quiz completions, send product recommendations based on customer preferences, and build segments from review responses and ratings.

Best Klaviyo flow use cases

• Attribute-based segments from quiz responses and review data
• Personalized product recommendation emails

Review value

You get access to product ratings, detailed feedback, and UGC with Okendo. And you can use those as “fresh” content that you can use with Klaviyo campaigns.

Limitations to consider

• Feature depth may be more than stores that only need basic review collection
• Advanced workflows require a solid Klaviyo setup to get full value

Choose Okendo if you want reviews to do more than collect feedback, and use customer responses to power smarter Klaviyo flows.

8. Stamped Product Reviews 

Best for: Reviews, UGC, and built-in loyalty options for growing Shopify brands

For the 8th review app on our list, we’ll go with Stamped: a platform that covers lifecycle, loyalty, and reviews automation. It’s a great app to try if you want to take advantage of an AI-powered assistant that helps your customers write more useful reviews.

Klaviyo integration fit

Stamped connects to Klaviyo through OAuth and sends review data as events directly into your account. From there, you can trigger flows based on specific events like positive reviews, negative reviews, photo submissions, and video submissions.

It also syncs customer properties like review count, last review score, and sentiment into Klaviyo profiles for smarter segmentation.

Best Klaviyo flow use cases

• Post-purchase review request flows via email or SMS
• Positive and negative review follow-up flows

Review value

Ratings, written reviews, photo content, and video UGC all sync into Klaviyo. You can also pull your latest positive reviews dynamically into email templates for abandoned cart or cross-sell campaigns.

Limitations to consider

• Klaviyo integration is available on paid plans only
• Some features may vary depending on your pricing tier

Choose Stamped if you want a solid review collection today with the option to add loyalty and retention campaigns as your store grows.

9. Junip Reviews

Best for: Simple and clean review management and basic Klaviyo flows

Junip is a review app built around high submission rates and mobile-first forms. Its uncomplicated setup enables customers to complete review requests from ecommerce brands.

Klaviyo integration fit

Junip sends review request flows through Klaviyo using events and personalized variables. You also get “Review Submitted” events to follow up with happy customers and build segments.

Best Klaviyo flow use cases

• Review request flows via Klaviyo events
• Review reminder and follow-up flows

Review value

Clean mobile forms, product ratings, and photo and video submissions without the complexity of larger platforms.

Limitations to consider

• Not the best fit for complex UGC or loyalty workflows
• Limits on user accounts, even on the highest plan

Choose Junip if you want an industry-leading submission rate on your review requests and a clean, no-fuss setup.

10. Fera Product Reviews 

Best for: Affordable photo and video reviews plus segment-based Klaviyo flows

Fera helps you collect photo, video, and text reviews automatically and display them in clean, good-looking widgets. It also pulls in reviews from Google, Facebook, and Etsy so shoppers can see feedback from multiple sources.

Klaviyo integration fit

Fera triggers Klaviyo flows based on review events. You can send thank-you emails for positive reviews, recovery emails for negative ones, and create segments of highly engaged customers using review data.

Best Klaviyo flow use cases

• Review score-based email flows
• Segment-based campaigns from review activity

Review value

Photo and video reviews, multi-source review display, and product ratings all help build the kind of trust that gets first-time shoppers to buy.

Limitations to consider

• Advanced Klaviyo segmentation may require checking plan access first
• Better suited for smaller stores than high-volume operations

Choose Fera if you want visual reviews and basic Klaviyo flows without paying for features you don’t need yet.

Klaviyo Reviews vs Third-Party Review Apps

The right choice here depends on what you actually need from your review data, not just how many features an app offers.

When Klaviyo Reviews Are Enough

If you’re already running your email and SMS through Klaviyo, the native Reviews tool keeps everything in one place.

You get review requests, pre-built flows, and customer data (all feeding into the same profiles you’re already using for campaigns) without adding another app to manage.

For stores that want simple review collection and cleaner campaign management, that’s a real advantage.

When Third-Party Review Apps Make Sense

Some stores need more than what a native tool can offer. If your review strategy goes over the basic review collection, it’s best to integrate third-party review systems with Klaviyo.

For example, some specialized apps offer more advanced UGC, custom questions, review syndication, or multi-channel workflows. If reviews are a bigger part of your retention plan, that “extra control” is something you’ll definitely need.

How to Use Review Data in Klaviyo

Here are six more ways you can use your review data in Klaviyo:

1. Post-Purchase Review Request Flows

The most common starting point is a review request email sent after a customer receives their order.

With review data, you can trigger the request based on actual delivery status, product type, or where the customer is in their journey.

A first-time buyer may need more time to form an opinion than a repeat customer. Automation handles the sending consistently, so you’re always collecting without having to think about it.

2. Review Request Reminder Flows

Some customers don’t (or maybe forget) to open your email. Reminder flows can help you save those “missed responses.”

However, you still need to be careful with “over-emailing.” Keep it to one reminder and set up a filter in Klaviyo to exclude anyone who has already submitted. So, only the customers who didn’t respond get the follow-up email.

3. Low-Rating Follow-Up Flows

You can also use the review data to act on low ratings. Respond to acknowledge the experience of “unhappy customer” and also offer the right support to save the relationship. You can also use the low ratings (or negative feedback) to resolve issues with your product, post-purchase communication, and even your ecommerce process.4.

4. Review-Based Customer Segments

You can build smarter segments based on star ratings, review content, or how recently someone left feedback.

For example, one customer who left a 5-star review last month is in a very different headspace than a buyer who left a 2-star review and never came back. Segmenting by review activity (rather than just purchase history) makes your campaigns more relevant to where each customer actually stands.

5. Social Proof in Email Campaigns

Review highlights, customer photos, and user-generated content can go directly into your Klaviyo email templates. These work especially well in abandoned cart flows, cross-sell campaigns, and post-purchase emails where a real customer review can answer a hesitant shopper’s last question.

6. Loyalty and Review Reward Flows

Some review apps connect loyalty programsdirectly to review submissions.

When that reward is triggered through a Klaviyo flow, it connects the review submission directly to the next purchase. That helps you build a repeat purchase habit that a that standalone email campaigns can’t activate.

💡Learn more about building a Klaviyo post‑purchase flow that retains customers and drives repeat purchases.

How to Choose the Best Review App for Your Store

The best review app for your business will still depend on what you really need. You can use the table below to guide you in choosing the right one:

Merchant type	What to prioritize	Recommended app type	Best-fit apps	Why it matters
New Shopify stores	Simple setup, free plan, basic review widgets	Lightweight review app	Judge.me, TrustWILL, Fera, Junip	Helps collect early reviews fast
Growing ecommerce brands	Review volume, automation, segmentation	Scalable review platform	TrustWILL, Stamped, Klaviyo Reviews	Supports review request flows and customer data usage
Visual UGC-focused brands	Photo reviews, video reviews, customer photos	Visual review app	Loox, TrustWILL, Fera	Gives shoppers real customer visuals to buy with confidence
Advanced retention programs	Loyalty, review activity, customer profiles	Review + retention platform	TrustWILL, Yotpo, Stamped	Connects reviews with repeat purchases and lifecycle campaigns
Budget-conscious merchants	Free plan, paid plan limits, and upgrade timing	Affordable review app	Judge.me, Junip, Fera	Avoids you from paying for features you don’t need

Final Words

At the end of the day, the app you pick should do more than just collect reviews. It should give you data you can actually use inside Klaviyo for review request automation, smarter segmentation, and more personal email campaigns.

If you want a starting point that supports review request flows, reminder emails, and passes real product data, give TrustWILL Reviews & UGC a try.

FAQs About Review Apps That Integrate With Klaviyo

Can Shopify review apps send review data to Klaviyo?

Yes, most Shopify review apps do, but the depth of the data depends on the app. Some apps like TrustWILL, Reviews.io, and Stamped push detailed review events and customer properties to Klaviyo directly. Others, like Klaviyo Reviews, just offer basic triggers (i.e., review requests and follow-up flows).

Is Klaviyo Reviews enough for Shopify merchants?

Klaviyo Reviews is okay for merchants who only need basic review collection and display. But if you’re looking for more features like advanced UGC or review syndication within other channels, it’s best to use a third-party app.

Can I automate review request emails in Klaviyo?

Yes, Klaviyo allows you to set up automated review request flows that trigger after an order is fulfilled or delivered. Most review apps on this list support this through their own events and metrics (so you can time and design your request even better).

Which review app is best for photo and video reviews?

TrustWILL, Loox, and Fera are good options here. Loox and Fera are built specifically around visual UGC, while TrustWILL covers it as part of a broader review and retention setup.