Keep every variant’s stock in step
Change one variant in Shopify and Douplo matches the others at that location. Same stock, no spreadsheets, no manual fixes.
Automatic sync
When stock changes at a location, the other variants of that product at the same location follow.
You stay in control
Choose which products sync, leave individual variants out, and fix or set quantities yourself.
Works per location
Each location is kept in step on its own. Nothing is mixed between locations.
How Douplo works
Shopify tracks inventory per variant, so a product sold in several sizes or colours can drift out of step. Douplo keeps the variants you choose at the same number.
Turn on auto-sync
Pick the products that should stay in step, from the Products page in the app.
Change stock in Shopify
Edit one variant as usual: in the admin, an import or another app.
The rest follow
Douplo sets the other variants at that location to match, and logs the change.
What you can do
- Sync the variants of a product, location by location.
- Leave any variant out. Douplo never changes it, and it never changes the others.
- Set one quantity for every variant kept in sync.
- Spot products whose stock differs and fix them in one click.
- Search by name or SKU, filter by vendor, product type or tag, and sort the list.
- See every change in the sync history.
Plans
Start free and sync up to 3 products. Pro removes the product limit. Plans are managed on Shopify’s own plan page, and you can change or cancel at any time.
Frequently asked questions
What does Douplo do?
Douplo keeps the stock of all variants of a Shopify product the same. When the inventory of one variant changes at a location, Douplo sets the other variants at that location to match.
Does it work with more than one location?
Yes. Each location is handled separately, so stock at one location is never mixed with another.
Can I leave a variant out?
Yes. Turn a variant off in Choose variants and Douplo never changes its stock, and changing its stock never changes the other variants.
What does Douplo change in my store?
Only inventory quantities. It never edits products, prices or orders.
How many variants and products can it sync?
Up to 50 variants per product. The Free plan syncs up to 3 products and Pro has no product limit.
What does it cost?
Douplo has a Free plan and a paid Pro plan. Plans are managed on Shopify's own plan page, and you can change or cancel at any time.
Does Douplo store customer data?
No. Douplo reads products, inventory and locations only. It does not request access to customers, orders or payments.
What happens to my data if I uninstall?
Everything Douplo stored for your store is deleted, normally straight away and within 48 hours at the latest.