Cart Reserve

Name: Cart Reserve
Brand: R3stack
Rating: 5.0 (1 reviews)

Pricing: From $9/month. Free trial available.
Rating: 5.0 (1)
Developer: R3stack

The moment a shopper adds to cart, we hold the stock. AI blocks bots before they touch it

Overselling kills drops. You sell 500 units, refund 80, and 80 customers go angry on Twitter. Cart Reserve fixes this at the source: the second a shopper adds an item, we hold that unit for them. Our AI scores every cart-add and blocks bots before they drain your stock. Expired carts release inventory automatically — no manual cleanup. Set per-product hold times, watch live activity, and block traffic by IP or country. Built for stores running flash sales, drops, and limited releases.

Hold cart stock instantly — the moment a shopper adds, that unit is theirs.
AI scores every cart-add and blocks scalper bots before they drain stock.
Auto-release expired carts — no oversold orders, no manual cleanup.
Per-product hold times — different rules for drops, basics, and limited runs.
Live dashboard tracks active carts, save rate, and stock health in real time.

Languages

English

Works with

Checkout
Shopify Admin

Pricing

Starter

$9 / month

or $90/year and save 17%

Features

Unlimited products & variants
1,000 reservations/mo
100 concurrent shoppers
Rule-based bot protection
7-day analytics window
Pre-built timer templates
Email support
30-day money-back guarantee

14-day free trial

Pro

$29 / month

or $290/year and save 17%

Features

10,000 reservations/mo
1,000 concurrent shoppers
AI-powered bot protection
30-day session history
Unlimited analytics history
Full timer customization
Block up to 10 IPs
30-day money-back guarantee

14-day free trial

Max

$79 / month

or $790/year and save 17%

Features

30,000 reservations/mo
3,000 concurrent shoppers
AI-powered bot protection
90-day session history
Custom analytics periods
Block 100 IPs + 50 countries
Global stock limits
30-day money-back guarantee

14-day free trial

All charges are billed in USD. Recurring and usage-based charges are billed every 30 days.

Reviews (1)

Overall rating

Counts per rating level

100% of ratings are 5 stars
1
0% of ratings are 4 stars
0% of ratings are 3 stars
0% of ratings are 2 stars
0% of ratings are 1 stars

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