StockTwin vs Variant Stock Sync
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for StockTwin, Oct 14, 2026 for Variant Stock Sync.
The short answer
- Both list a free plan. Paid plans start at $9.99/month for StockTwin and $9.99/month for Variant Stock Sync.
- StockTwin lists 10 features Variant Stock Sync’s listing doesn’t mention, including Analytics, Barcodes, Data import and export.
Head to head
Free
- · Limited sync (orders & refunds)
- · Manual SKU discovery
- · Manual sync
- · Up to 5 SKU groups
Pro
- · Auto-reconcile
- · Barcode sync
- · CSV export
- · Full sync mode
- · Low stock alerts
- · Safety stock
Business
- · All Pro features included
- · Bundles & kits
- · CSV import & export
- · Exclusion rules
- · Sync rules
- · Unlimited SKU groups
Free
- · Unlimited variants per product
- · Up to 3 products
- · Webhook synchronization (real time)
Pro
- · Email support
- · Unlimited variants per product
- · Up to 50 products
- · Webhook synchronization (real time)
Business
- · Automatic detection by AI
- · Email support
- · Scheduled synchronization (3PL)
- · Unlimited Products
- · Unlimited variants per product
- · Webhook synchronization (real time)
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureSelling the same product under multiple listings, photos, or collections? StockTwin links every variant that shares a SKU or barcode and keeps their inventory perfectly in sync across all your locations, in real time. When one sells, the rest update instantly, so you never oversell or show wrong stock counts again.
Sync inventory between product variants sold in different quantities. When a customer buys a pack of 6, stock for packs of 1, 3, and 12 updates automatically. Set a multiplier for each variant, pick a reference, and the app keeps everything in sync via webhooks. Scheduled sync is available for stores using 3PL or external fulfillment providers. Ideal for bundles, multipacks, and wholesale quantities.
- Sync stock across duplicate SKUs and barcodes in real time
- Sell bundles and kits without overselling their components
- Reserve safety stock for wholesale and off-channel sales
- Bulk sync hundreds of SKUs, import/export setup as CSV
- Multiplier-based stock calculation for any bundle or pack ratio
- Real-time inventory sync between variants via Shopify webhooks
- Scheduled sync for 3PL and external fulfillment workflows
- Multi-location inventory filtering for complex warehouse setups
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 |  StockTwin |  Variant Stock Sync |
|---|---|---|
| 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 | StockTwin | Variant Stock Sync |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | StockTwin | Variant Stock Sync |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $9.99/month | $9.99/month |
| Longest free trial | 7 days | Not listed |
| Plans listed | 3 | 3 |
Listing
| Measure | StockTwin | Variant Stock Sync |
|---|---|---|
| Shopify category rank | #156 | #214 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jun 3, 2026 | Apr 23, 2026 |
| Languages | 1 | 2 |
| Developer | Craft Lab | Topicimes |
FAQ
StockTwin and Variant Stock Sync: common questions
- Is StockTwin or Variant Stock Sync cheaper?
- Both list a free plan. Paid plans start at $9.99/month for StockTwin and $9.99/month for Variant Stock Sync. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- StockTwin lists 10 the others don’t mention, such as Analytics, Barcodes, Data import and export, Detailed logs. Variant Stock Sync lists 9 the others don’t mention, such as AI optimization, Bulk, Bulk processing, Custom. 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 Oct 13, 2026 for StockTwin, Oct 14, 2026 for Variant Stock Sync; 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 Oct 13, 2026 for StockTwin, Oct 14, 2026 for Variant Stock Sync. 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.