Duplicup ‑ Duplicate SKU Sync

Real-time sync by SKU across products to prevent overselling.

by Stokow · Launched: May 2026 · Free plan available.

5.0 (3) on Shopify

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Automatically sync inventory across products and variants with the same SKU. Prevent overselling and easily manage duplicate listings with Duplicup.

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About Duplicup ‑ Duplicate SKU Sync

Duplicup helps you optimize your store by safely offering duplicate products and variants under multiple listings. Whether you are selling identical items on separate pages, improving SEO, or managing different prices for POS, simply give them the same SKU. Our app creates a shared inventory pool and syncs inventory across matching SKUs in real-time. No more manual stock updates or overselling, allowing you to confidently expand your product catalog.

Last verified: August 11, 2026 · Fresh

App details

Developer: Stokow
Category: Orders & shipping
Pricing: Free plan available
Launched: May 2026
Rating: 5.0 (3) on Shopify

Key features

Available for ALL Shopify plans
All App Features Included
Up to 3 SKUs limit
Unlimited Syncs
1-Click Restock

Integrations with:

Shopify Admin

4 plans · starts free · 7-day free trial

Starter

Free

Growth

$10.99/month

Pro

$19.99/month

Business

$39.99/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 3 Shopify App Store reviews

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We looked all over for a solution and finally found this. We had a specific issue that required some some custom coding to get it working. Aviad was always on top of it and went above and beyond to make sure Duplicup worked perfectly with our store. Highly, highly recommend.

— CRUSHS

I’ve tried several other apps for managing shared inventory across variants and locations, and none of them quite delivered. This one finally does. Everything stays perfectly in sync, which has saved us a huge amount of time and eliminated the constant headaches we used to deal with. What really sets it apart is the support. It’s incredibly fast, genuinely helpful, and the team goes above and b...

— Stash Shop

We needed a slight tweak to an existing feature and we reached out and the devs had the feature added within a few days. No other SKU sync tool lets you manually link product skus. This is a game changer for our business and quite helpful. Thanks so much!

— Security & Privacy Tools | STS Collective

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