Duplicup ‑ Duplicate SKU Sync for Shopify

Duplicup ‑ Duplicate SKU Sync

Share inventory across duplicate products without overselling.
Developer
Stokow
Rating
5.0
Feedback
5
Reviews
Chart
#9,229
Shopify
Reviews over time
New reviews per month across the app's lifetime.
App ranking
Overall position in the Shopify App Store.
Reviews summary

The reviews for the app are mostly positive, with users praising its effectiveness in managing shared inventory across variants and locations. Users appreciate the seamless synchronization and time-saving benefits it provides. The exceptional customer support is highlighted, with the team going above and beyond to address custom coding requests and feature tweaks promptly. However, there is a negative aspect mentioned in one review where the app is adding 2 products to the cart at once, which can be a usability issue.

Time spent using app
How long merchants keep the app installed.
Less than an hour 0%
Less than a day 0%
Less than a month 100%
Less than a year 0%
More than a year 0%
All reviews
5 / 5 Share
Oct. 8, 2026

Everything about this app is perfect for me. I had created duplicate listings for my 2 stores and had tags to identify where the products were. But with the last app I used this did not prevent overselling even though it was supposed to. The support I received from Aviad was beyond what I anticipated. He found a way to make this work! What a relief. We all know how awkward it is to oversell and disappoint our customers. Thank you Aviad and the Duplicup team!!!

Store Using app Total reviews Average rating
5 / 5 Share
Aug. 31, 2026

The customer service was amazing in helping me get everything set up for my release and ensuring the app was working correctly. A must have for brand owners and sellers

Store Using app Total reviews Average rating
SAAINTUARY 2 days 1 2.0
Developer Reply

Hi SAAINTUARY team! Thank you for trying Duplicup. I am so sorry to hear about the items being added to your cart twice. While our app typically runs only in the background and doesn't interact with the cart, we want to be absolutely sure we understand what happened here. We would be more than happy to look into this with you and help get it fixed, whether it's an unexpected interaction with our app or a theme conflict. Please reach out to our support with a few details on how to reproduce the issue so we can investigate and solve this together!

5 / 5 Share
Aug. 10, 2026

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.

Store Using app Total reviews Average rating
CRUSHS 18 days 7 5.0
5 / 5 Share
July 27, 2026

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 beyond. Any time we’ve reached out, we’ve gotten clear, thoughtful responses almost right away. That level of care makes a massive difference. If you’re looking for a reliable solution that actually works, this is the one. Highly recommend.

Store Using app Total reviews Average rating
Stash Shop 4 days 3 5.0
5 / 5 Share
June 16, 2026

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!

Store Using app Total reviews Average rating

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