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Cluster

Continuous testing that lifts conversions.

by CLUSTERSOFTWARE, INC. · Launched: November 2024 · Free plan available.

5.0 (7) on Shopify Used by 11 Shopify stores +5 installs · 30 days Built for Shopify

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Capture more of your traffic with an optimized email/SMS popup.

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About Cluster

Turn more visitors into subscribers and sales with Cluster.Most brands convert only a small fraction of visitors into subscribers. Cluster uses AI to design high-converting popups, run A/B tests, and continuously optimize for more revenue.Engage visitors, build trust quickly, and grow your email list faster -- without annoying your customers. Automatic A/B testing fine-tunes your popup design and messaging AI-generated, design-forward popups that match your brand and drive performance Show popups only to certain visitors, like paid ad traffic Collect Zero Party Data with Quizzes for better segmentation in your flows Turn your site traffic into growth – effortlessly. Show more Show less

Last verified: July 15, 2026 · Fresh

App details

Pricing
Free plan available
Launched
November 2024
Rating
5.0 (7) on Shopify

Key features

  • Capture more of your traffic with an optimized email/SMS popup
Integrations with:

Checkout, Clarity, GA4, Heatmaps

1 plan · starts free · 14-day free trial

Free

Free

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 8 Shopify App Store reviews

Use the arrows to read individual reviews

Best CRO app out there. The support is outstanding. Definitely recommend!
— HO3 Filter
Cluster helped us 5x your opt-in rate from our exisisting ecomsend popup. They also assisted in running a/b tests with new designs that further improved performance. Great product!
— High Above
In the last 30 days, my store's email opt-in rate increased from 1% to 13.4%. The Cluster popup, after iterating with the Cluster founders and finding a deal that resonated with our customers (a free gift), led to a popup conversion rate of 23%. Its been a pleasure working with the Cluster team, who will work with you on strategy and implementation of the popup, and cares about the lift they gen...
— Wholeberry
Cluster's pop-up really helped to excel our opt-in rates. Since I started using Cluster, it ramped up 4x more than before. We had a Klaviyo popup to get emails, but were only seeing ~2% opt-in rate. After installing Cluster, we saw a 4x increase immediately! Proof that small tweaks can drive major impact. The founders are also extremely responsive and helped us A/B test changes to the popup to fu...
— n99
The Cluster team has been incredible to work with, providing top-notch support from implementation to ongoing optimization. They took the time to understand our needs, ensuring a smooth onboarding process and making adjustments to fit our business. Their responsiveness and willingness to collaborate set them apart, making this app a fantastic choice for anyone looking for both great functionality...
— Barista Underground
Our experience working with Cluster is great, the personal onboarding was awesome and I´m confident that the new popup will convert a lot more than our old one. The direct communication with the founders is a bonus, because usually if you have an issue, other apps send you, either to a bot or a customer service agent.
— VitalBotanics
Results speak for themselves. My stores opt-in rate went from a 1.2% to an ~8% opt-in rate. The best part is that conversion rate of people that went through the pop up progression was through the roof. Also, the ability to test different experiments and see results in real-time was huge. It gave my store the ability to hone in on what is working, iterate, and adapt. Really can't recommend Cluster...
— Extra Base Sports
I have been working with the cluster team over the past couple of months. They are innovative, creative and proactive. They focus on the growth of your busines. Since working with them, we have significantly increased our newsletter signups and meaningfully increased our conversions from those signups.
— JustUs Skincare

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