Stock Sync for Shopify: what it does, what it costs, and where it stops
Short answer: Stock Sync, now sold under the name syncX: Stock Sync, is a Shopify app that reads supplier stock files (Google Sheets, FTP, Dropbox, an API link) on a schedule and updates the stock, price and product data in your store. It is a good fit if your main job is loading supplier data into Shopify. As of November 2026 it has a free plan for 1 source and up to 2,000 products, paid plans from about $7 and $10 a month, and a $300 a month plan for large catalogs. It is not a full multichannel tool: if Amazon, Etsy and TikTok also need to match, you need more than a supplier feed.
You sell supplier stock on Shopify and want to know if Stock Sync is the right tool to keep those numbers current, and what happens as you add more suppliers and channels.
I'm Ranjit, and I run Blur Studio: 15+ years building software, 120 apps taken live, and clients who have gone on to raise $10M+. I build AI systems and processes that help businesses do a lot more with a lot less time. I also work differently from most of what else is out there, more on that further down this page. Say hello.
What Stock Sync does
Stock Sync is a Shopify app made by a company called SyncX, which now sells it as syncX: Stock Sync. The Shopify App Store listing shows a 4.8 rating from 939 reviews and a Built for Shopify badge, which is Shopify's mark for apps that meet its performance and design standards.
The job it does is simple. Your supplier sends you a file or a feed with product codes (SKUs), stock counts and prices. Stock Sync reads that file on a schedule and writes the changes into Shopify. Per the listing, it can pull from Google Sheets, FTP or SFTP servers, Google Drive, Dropbox, a web address (URL) or a REST API, which is a standard way for one program to ask another for data. It can also import products from WooCommerce, BigCommerce, Square or a CSV or XLSX file.
Past plain stock numbers, the listing also names price updates with markups, removing discontinued items, publishing items again when they restock, syncing images and metafields (extra custom fields on a product), and sorting collections so sold-out items move down.
The name change causes confusion. Search results and old blog posts say "Stock Sync". The App Store listing now reads "syncX: Stock Sync & Inventory". It is the same product.
Stock Sync pricing as of November 2026
The syncX pricing page shows a plan builder rather than fixed tiers. You pick the number of feeds (a feed is one data source, usually one supplier), the number of products per feed, and how often it runs. The App Store listing shows the same plans in its own wording. Prices below are in USD from the syncX pricing page as of November 2026. The App Store converts prices into your local currency, so check the figures in your own store before you commit.
| Plan | Price | Feeds | Products | How often |
|---|---|---|---|---|
| Free | $0 | 1 | Up to 2,000 | Manual update only |
| Starter | From $7 a month | 1 to 5 | 500 to 2,500 | Once a day |
| Expert | From $10 a month | 1 to 25 | 5,000 to 100,000 | Every hour at best, 12 hours in the base price |
| Scale | $300 a month | Unlimited | Unlimited | Up to every 10 minutes, on request |
The pricing page lists add-ons for the Expert builder: $7 for each extra feed, $2 for each extra 5,000 products, and $1 per feed for each faster step on the schedule (the base is every 12 hours). Paid plans start with a 3-day free trial, then $1 for the first 30 days. Scale adds custom API setup and ERP (company back-office system) sync.
A worked example (made-up shop, real add-on rates)
A shop buys from 3 suppliers. Each supplier file has about 3,000 products. The owner wants stock refreshed every 4 hours.
- Base Expert plan, 1 feed: $10
- 2 extra feeds at $7: $14
- Faster schedule: 12 hours to 4 hours is 3 steps (8, 6, 4), at $1 per feed per step across 3 feeds: $9
- Products: each feed is under 5,000, so $0 extra
Total by my arithmetic: about $33 a month. Confirm it in the app's plan builder, because add-on rates can change.
Where it works well
- Dropshippers and resellers. If your stock lives in a supplier's spreadsheet or feed, this is the exact job the app was built for.
- Stock Sync for Google Sheets. A shared sheet is the easiest feed to set up. Your supplier or your own team edits the sheet, and Shopify follows. This is a common way for small shops to run with no developer.
- Cheap entry. You can test the free plan with one supplier before paying anything.
- Low-stock alerts and logs. The listing names low stock alerts, error reports and detailed logs, which matter when a supplier sends a bad file.
Where it stops: many suppliers and many channels
Three limits show up once a business grows.
- A supplier feed is not your real stock. A supplier file tells you what the supplier has. If you also hold your own stock, or sell the same item on Amazon and Etsy, no single supplier feed knows the true number. The app updates Shopify from the feed. It does not decide what you should show on each channel.
- Cost climbs per feed. Every supplier is a feed. At $7 each, 10 suppliers add $63 to the base. That is still small. The real cost is the time spent when one supplier changes a column name and the feed breaks.
- Freshness depends on the plan. On Starter, the schedule is once a day at most. A daily or even hourly schedule can leave a gap on a fast-selling item. The pricing page also lists real-time sync on Expert and Scale, and the listing mentions real-time stock sync across multiple stores and channels, so look at which channels the app supports before you rely on it for Amazon or TikTok Shop.
The listing says the Shopify "Works with" list includes Shopify Flow, Google Sheets, FTP and SFTP, and files in CSV, XLSX, XML and JSON. It does not list Amazon or Etsy as destinations. If you sell on those too, read multichannel inventory management software next.
Common Stock Sync problems and fixes
- Products that do not match. The app matches rows by a key, usually the SKU. A space, a capital letter or a missing code means no match. Clean the SKU column first.
- Products vanish after a sync. If you turn on "remove discontinued items" and a supplier sends a partial file, products can disappear. Test on a handful of products and keep a backup export.
- Feed errors at night. Suppliers change file layouts without notice. Turn on email alerts and check the logs the first week.
- Hitting the product limit. Feed limits count products per feed. If you pass it, add the $2 per 5,000 add-on or split the supplier into two feeds.
Alternatives to Stock Sync
| Tool | What it is | Price (November 2026) | Pick it if |
|---|---|---|---|
| Shopify CSV import | Shopify's built-in file upload for products and stock | Free | You have a few hundred products and update monthly |
| Shopify Marketplace Connect | A Shopify-made app that links your catalog to Amazon, Walmart, Target Plus and eBay | Free to install; first 50 synced orders a month free, then 1% per extra synced order, capped at $99 a month | The problem is marketplace listings and orders, not supplier files |
| Sellbrite | A tool for listing and syncing across marketplaces, now part of GoDaddy | Free up to 30 orders a month; paid plans of $19, $59 and $99 a month on its Shopify pricing page, priced by order volume, as of November 2026 | You sell on several marketplaces from Shopify |
| Linnworks | Multichannel inventory and order software for growing retailers | Priced by monthly orders; ask for a quote | You have a warehouse and many channels |
For a wider look, my inventory management system guide and ecommerce tool stack guide cover the next step up.
How I'd approach this
If your stock comes from suppliers and you sell only on Shopify, start with the free plan on your single biggest supplier. Run it for two weeks. If it holds, upgrade to Expert and add suppliers one at a time.
If you sell the same items on Amazon, Etsy or TikTok Shop as well, I would not add more supplier feeds yet. First decide where the one true stock number lives. That is usually a single sheet or system that takes the supplier numbers, subtracts what is reserved for each channel, and pushes the result out. A supplier-feed app is one input to that, not the whole answer.
When a business gets to three or more channels and a handful of suppliers, the cheap fix is a small custom layer that combines supplier files with your own counts and sends an alert when a number looks wrong. I build those. If you want to talk it through, you can book a quick call with me.
Questions people ask
Is Stock Sync the same as syncX?
Yes. SyncX is the company, and the Shopify App Store listing for the app now reads syncX: Stock Sync & Inventory. Older articles and reviews call it Stock Sync.
Is there a free version of Stock Sync?
Yes. As of November 2026 the free plan covers 1 update feed, up to 2,000 products, and manual updates only. Scheduled automatic updates need a paid plan.
Can Stock Sync read a Google Sheet?
Yes. The App Store listing names Google Sheets, FTP or SFTP, Google Drive, Dropbox, a URL and a REST API as sources. A shared sheet is the simplest to set up. For a wider guide, see multichannel inventory spreadsheet.
Does Stock Sync update Amazon and Etsy?
The listing describes syncing stock across multiple stores and channels, but it does not name Amazon or Etsy in its "Works with" list. Check the app's channel list before you rely on it, or use a marketplace tool such as Shopify Marketplace Connect. See multichannel inventory management software.
How much does Stock Sync cost for several suppliers?
Each supplier is one feed. On the Expert builder, extra feeds are $7 each, so three suppliers at the base schedule come to about $24 a month, before any faster-schedule add-on. Check the live plan builder for current rates.
What are the best Stock Sync alternatives?
It depends on the job. For marketplace listings and orders, look at Shopify Marketplace Connect or Sellbrite. For warehouse-heavy multichannel selling, look at Linnworks. For a small catalog, Shopify's own CSV import may be enough.
More in this topic: Ecommerce: Shopify and marketplace sync (19 guides) →