R3Stack
Cart Reserve

Your next drop will oversell. Unless you fix it now.

Cart Reserve holds stock the moment a shopper adds to cart. Bots get blocked. No more refunding 80 angry customers.

2 months free · 5-minute setup · 30-day money-back
Your store
HomeCatalog
LIMITED DROP
Air Max '90 — OG Drop
$160.00
8
9
10
11
12
Add to cart
MORE FROM YOUR STORE
Dunk Low · $110
Blazer · $95
Cortez · $90
Jordan 1 · $180
Air Force · $115
Powered by Shopify
WITHOUT CARTRESERVE

What one oversold drop actually costs you.

orders
$4,200
refunded back to angry buyers
18 hrs
your team triaging tickets
$146
Shopify fees you don't get back
WITH CART RESERVE
$0
refunded — stock held in real time
0 hrs
support tickets to triage
$0
Shopify fees lost to refunds
Cart Reserve, by comparison
$29/mo — pays for itself if it stops one oversold order.
Stop the bleeding
Shopify processing fees calculated at 2.9% + $0.30 per refunded transaction.
Estimates based on typical Shopify limited-drop economics.

How it works

01

Shopper adds to cart

That unit is reserved instantly. No one else can take it.

02

Bots get blocked

AI scores every cart-add in <200ms. Suspicious sessions never reach stock.

03

Expired carts auto-release

Abandoned carts return stock on their own. No cleanup.

drops.store/products/limited-drop

Everything in the box

holdReal-time cart holdsCarted = reserved. Duration is yours.
scoreAI bot detectionEvery cart-add scored in <200ms.
releaseAuto-release on expiryExpired carts restock themselves.
liveLive dashboardCarts, save rate, blocks — real time.
blockIP & country blockingCut bot networks by IP or geo.
rulesPer-product rulesEach product, its own timer.

Built for sneakers · watches · streetwear · supplements · collectibles · premium pre-orders — any Shopify store running drops.

SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 ·
Summer founder round · 2026Closes Aug 31
$29$14.50/month

Cart Reserve Pro, half price for your first six months. After your standard trial — billed through Shopify, no promo code. Then $29/mo from month seven onward.

One-click discount link · sent to your inbox
SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 · SUMMER FOUNDER ROUND · 50% OFF · 6 MONTHS · CART RESERVE / PRO · $14.50/MO · FIRST 50 STORES · CLOSES AUG 31 ·

Start free. Scale when your drops do.

Start with 2 months free. Every plan includes a 30-day money-back guarantee.

STARTER
$9/month
~30¢ / day
Try now →
1,000 reservations/moRule-based bot protectionEmail support
POPULAR
PRO
Founder · 50% off · 6 months
$14.50/month
$29/month · then $29/month
Claim founder rate →
10,000 reservations/moAI bot protectionBlock up to 10 IPs24hr priority support
MAX
$79/month
~$2.60 / day
Try now →
30,000 reservations/moBlock 100 IPs + 50 countries4-hour response SLA
30-day money-back guarantee
Full refund on the entire plan. No questions asked.
The R3Stack brothers
WHOTHE FOUNDERS

We're three engineer brothers in Brno. We built Cart Reserve to help Shopify merchants stop overselling and protect every drop.

The R3Stack brothers· BRNO, CZECHIA

Questions

No — checks run server-side in under 200ms. No impact on Core Web Vitals.

Your next drop doesn't have to end in refunds.

Install Cart Reserve before your next launch. It takes 5 minutes.

Install free on Shopify
2 months free · Billed through Shopify · 30-day money-back