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Cart Reserve – Inventory Holds icon

Cart Reserve – Inventory Holds

Hold real stock at add to cart and validate it...

by R3stack · Launched: April 2026 · Free plan available.

5.0 (4) on Shopify
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Prevent overselling with real inventory holds at add to cart, checkout validation, automatic release, fair queues, bot controls, and live analytics.

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About Cart Reserve – Inventory Holds

Cart Reserve holds available inventory when a shopper adds a protected product to cart. Each reservation is tied to a signed session and verified again at checkout. The storefront timer reflects the active hold, and expired reservations return to stock automatically. Use Cart Reserve for limited stock, one-of-one products, restocks, flash sales, and product drops. Fair queues, scheduled drops, bot controls and analytics help manage demand. We tailor setup to your theme.

Last verified: September 20, 2026 · Fresh

App details

Developer
R3stack
Category
Store management
Pricing
Free plan available
Launched
April 2026
Rating
5.0 (4) on Shopify

Key features

  • 3 protected products
  • 25 concurrent active holds
  • Unlimited reservations
  • Checkout validation
  • Fixed 10-minute reservation timer
Integrations with:

Checkout Shopify Admin

4 plans · starts free · 14-day free trial

Free

Free

Starter

$25/month

Pro

$69/month

Max

$149/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 4 Shopify App Store reviews

Use the arrows to read individual reviews

Excellent service, Cart reserve works well with our shop., We had a few issues and Adam at support not only was on the case immediately he implements changes and also partnered with us and helped set the design on our web site then tested all pages to make sure everything was working correctly. After service is brilliant and the product works very well. I recommend this app highly and will be usin...
— TheHumFromTheHill
This app is the BEST cart reserve app I've used. It works as you WANT it to and looks really pretty too. I have tried EIGHT different cart reservation apps before this one, but they were always focused on driving sales and not ACTUALLY saving the cart so my customers have time to check out. Adam reached out to me, and i've been working closely with him since. The app is near perfect, the suppo...
— The Frame Game AU
I've been really impressed with the support from Adam and the team. We experienced an issue with the cart reservation feature during a very high-traffic Pokémon release. Adam responded quickly, took the time to investigate the problem with us, and was always friendly, transparent, and genuinely interested in finding a solution. Even though the app wasn't the perfect fit for our current setup, the...
— Feenturm.de
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 w...
— Jukupop

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