Duplicup ‑ Duplicate SKU Sync vs SimpleSync » Sync by SKU
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 8, 2026 for Duplicup, Nov 3, 2026 for SimpleSync » Sync by SKU.
The short answer
- On the Shopify App Store: Duplicup 5.0 from 5 reviews and SimpleSync » Sync by SKU 4.5 from 21 reviews.
- Only Duplicup lists a free plan. Paid plans start at $13.99/month for Duplicup and $10/month for SimpleSync » Sync by SKU.
- Duplicup lists 2 features SimpleSync » Sync by SKU’s listing doesn’t mention, including Analytics, Insights.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Starter
- · 1-Click Restock
- · Automatic SKU & Barcode Matching
- · Available for ALL Shopify plans
- · Standard Volume Processing
- · Up to 3 Duplicate SKU Groups
- · Up to 50 syncs / month
Growth
- · 1-Click Restock
- · Fast Email Support
- · Manual Link Groups (Bundles & Packs)
- · Multi-Location Support
- · Sync History
- · Unlimited Store Catalog Size
Pro
- · 1-Click Restock
- · For growing businesses
- · Manual Link Groups (Bundles & Packs)
- · Multi-Location Support
- · Priority Support
- · Sync History
Enterprise
- · High Concurrency Sync
- · Manual Link Groups (Bundles & Packs)
- · Multi-Location Support
- · Priority Engineering Access
- · Sync History
- · Unlimited Duplicate SKU Groups
Shopify shops
Shopify Plus shops
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureDuplicup 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 to keep connected inventory in sync across matching SKUs in real-time.
SimpleSync is very useful if you're selling different products that are physically the same. SimpleSync keeps the inventory of these items in sync. SimpleSync also helps you sell more when you're selling a unisex product. You're going to sell more items if you focus your product pages on men and women separately. Make two products in the Shopify admin, give them the same SKU and you're done!
- Sync inventory in real-time for products and variants sharing an SKU.
- Sell an item through multiple product pages and track simple bundles.
- Multi-location SKU sync. Match stock levels at all your locations.
- Quick restock. Update stock of all the same SKUs together with one click.
- SimpleSync keeps the inventory in sync fast for items that share an SKU.
- Sell an item through multiple product pages.
- Inventory tracking for simple bundles where one item has tracked inventory.
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  Duplicup |  SimpleSync » Sync by SKU |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | Duplicup | SimpleSync » Sync by SKU |
|---|---|---|
| App Store rating | 5.0 ★(ahead) | 4.5 ★ |
| App Store reviews | 5 | 21(ahead) |
| New reviews, 28 days | Not enough data | 1 |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Duplicup | SimpleSync » Sync by SKU |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $13.99/month | $10/month(ahead) |
| Longest free trial | 14 days | 7 days |
| Plans listed | 4 | 2 |
Listing
| Measure | Duplicup | SimpleSync » Sync by SKU |
|---|---|---|
| Shopify category rank | #26(ahead) | #63 |
| Shopify App Charts | #8 on Pricing moves in Inventory optimization | Not on this week’s charts |
| Built for Shopify | Yes | No |
| Launched | May 1, 2026 | Feb 6, 2014 |
| Languages | 1 | 1 |
| Developer | Stokow | Gazebo |
FAQ
Duplicup and SimpleSync » Sync by SKU: common questions
- Is Duplicup or SimpleSync » Sync by SKU cheaper?
- Only Duplicup lists a free plan. Paid plans start at $13.99/month for Duplicup and $10/month for SimpleSync » Sync by SKU. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Which has better reviews, Duplicup or SimpleSync » Sync by SKU?
- On the Shopify App Store: Duplicup 5.0 from 5 reviews and SimpleSync » Sync by SKU 4.5 from 21 reviews.
- What features does each app list that the other doesn’t?
- Duplicup lists 2 the others don’t mention, such as Analytics, Insights. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Nov 8, 2026 for Duplicup, Nov 3, 2026 for SimpleSync » Sync by SKU; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Nov 8, 2026 for Duplicup, Nov 3, 2026 for SimpleSync » Sync by SKU. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.