Shopify app
NewCart Reserve – Inventory Holds
Hold real stock at add to cart and validate it...
- Rating on Shopify
- 5.0(4)
- Reviews
- 4
- Developer
- R3stack
- Launched
- April 2, 2026
- Pricing
- Free plan available. Free trial available.
- Languages
- English
The facts
Every value below is read from the listing or computed by the published formula. Nothing is a verdict.
Bayesian rating
4.47
category median 4.58
Reviews in the last 180 days
3
from the 3 reviews on the listing page
1 and 2 star share
0%
0 of 4
Starting price
$25/month
band: $10 to $29 · 14-day trial
Pricing plans as listed on Shopify
All charges are billed in USD. Recurring and usage-based charges are billed every 30 days.
| Plan | Price | Billed yearly | Trial | Usage fee | Included |
|---|---|---|---|---|---|
| Free | Free | not offered | none | none stated | 3 protected products; 25 concurrent active holds; Unlimited reservations; Checkout validation; Fixed 10-minute reservation timer; 24-hour analytics history; Hands-on setup support |
| Starter | $25/month | $250/year | 14 days | none stated | All Free features; 100 protected products; 100 concurrent active holds; Bulk product selection; Fair queue for traffic spikes; Rule-based bot protection; Configurable reservation timer; 7-day analytics history |
| Pro | $69/month | $690/year | 14 days | none stated | All Starter features; 500 protected products; 500 concurrent active holds; Advanced fair queue; AI-powered bot protection; Full storefront customization; 30-day analytics history |
| Max | $149/month | $1490/year | 14 days | none stated | All Pro features; ALL mode — unlimited products; Auto-protect new products; 2,500 concurrent active holds; AI + IP and country protection; Global inventory limits; 90-day analytics history |
Rating distribution
4 ratings on the listing when last refreshed.
- 5 stars4(100%)
- 4 stars0(0%)
- 3 stars0(0%)
- 2 stars0(0%)
- 1 star0(0%)
Latest reviews
The 3 most recent of 3 on-page reviews, quoted to at most 25 words each. Full reviews are on the Shopify listing.
5 starsJul 9, 2026TheHumFromTheHillUnited Kingdom28 days using the app
"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 ..."
5 starsJul 9, 2026The Frame Game AUAustralia14 days using the app
"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 ..."
5 starsJun 15, 2026JukupopUnited Kingdom5 days using the app
"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 ..."
Developer replied. Read on Shopify
Features Shopify lists for this app
Feature handles from the listing, grouped as Shopify groups them.
Inventory management
- Inventory tracking
- Real-time updates
Notifications and analytics
- Insights
- Analytics
Fraud types
- Bots
Prevention tools
- Order validation
- Blocklists
- Bot detection
- AI-powered detection
Alerts and analytics
- Suspicious activity
- Visitor analytics
- Risk reports
Works with
Third-party integrations link to their hub when 5 or more apps name them. Shopify's own surfaces are listed separately and never counted as integrations.
Shopify surfaces: Checkout, Shopify Admin
Data access
As disclosed on the listing. Never scored.
View customer data
Sensitive data, device and activity data
- Sensitive data: Name, email address
- Device and activity data: Geolocation, IP address, browser and operating system
View staff and contributor data
Store owner
- Store owner: Name, email address, phone number, physical address
View and edit store data
Products, orders, Shopify Functions, Online Store
- Edit products: Inventory, products, collections
- Edit orders: All order history for the last 60 days
- Edit Shopify Functions: Cart and checkout validations
- Edit Online Store: Theme, checkout page
- View other data: Locations
Developer
R3stack
- Apps in the dataset:
- 1
- Address:
- Znojmo, CZ
- Website:
- r3stack.com/en/cartreserve
- Support email domain:
- r3stack.com
- English support:
- yes
- Resources:
- Privacy policy, FAQ, Tutorial, App Documentation
Similar apps
Shopify's own similar-apps list first, then apps in the same category that share the most feature handles.
Blockify Fraud Filter, Blocker
4.9(1,794) · listed as similar by Shopify
Disputifier: Smart Chargebacks
4.7(131) · listed as similar by Shopify
Mercado Pago Antifraude Plus
4.4(55) · listed as similar by Shopify
FLINT Sentry
No ratings yet · shares 43% of feature handles
Order Buster
5.0(3) · shares 38% of feature handles
Negate ‑ Bot Protection
4.5(59) · shares 38% of feature handles
From the Shopify listingDeveloper claims, shown verbatim and collapsed. 87 words.Show
- Real inventory holds update available stock at add to cart
- Checkout validation ties each purchase to an active reservation
- Expired holds release automatically for the next shopper
- Fair queues, scheduled drops and bot controls help manage traffic spikes
- Live analytics and theme-tailored setup with hands-on support
Reserve stock at add to cart, verify it at checkout, and release expired holds automatically.
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.
Questions and comments
Questions people ask about Cart Reserve – Inventory Holds, answered from what this page shows. Entries marked Site editor are written by the EcomAppReviews editor. Reader comments appear after a person has read and approved them, usually within a day. E-mail addresses are never published.
Last updated Oct 21, 2026. Ratings and review counts are the values shown on each app's public listing. How the numbers are computed: methodology.
4 reviews counted on the listing. Rating and count in the structured data are the values Shopify displayed when the listing was last refreshed.