Reviews (1)

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5
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All reviews
June 15, 2026

World-Class Support from Adam! Brilliant App, Just Mind Extreme Flash-Sale Use Cases

I am leaving this review to highly commend Adam from the tech support team, who provided some of the best, most responsive customer service I have ever experienced on Shopify. He went above and beyond to help us configure the app.

The app itself is beautifully designed, highly intuitive, and I have no doubt it works flawlessly for the vast majority of standard retail stores looking to reduce cart abandonment.

The only reason we ultimately had to uninstall is due to our highly unique, high-velocity business model. We run high-demand product "drops" where hundreds of customers flood the checkout at the exact same millisecond. In these extreme, high-traffic spikes, we found the reservation system couldn't quite keep pace with Shopify's core inventory servers, leading to a few checkout mismatches for our buyers.

While it wasn’t the right fit for our specific flash-sale chaos, I cannot fault the app's build or the incredible support team behind it. If you run a standard e-commerce store, this app is fantastic. Huge thanks again to Adam for all his hard work and dedication!

Jukupop
United Kingdom
5 days using the app
R3stack replied June 18, 2026

Thank you for such a thoughtful and fair review, it really means a lot.

You're right that the version you used wasn't built for hundreds of simultaneous checkouts on the same product. A major update is in progress that redesigns how reservations interact with Shopify's inventory system, specifically for high-concurrency flash sales like yours.

When it's live, the door is always open — I'd love for you to give it another try. Thanks again for the kind words and for helping make the app better.

Adam — Cart Reserve