Connected Inventory alternative for shared stock

At a glance

	Connected Inventory	OneShelf
How it works	Connected Inventory syncs stock between products and variants. You link them by the same SKU or by hand, or you set components for a bundle.	One base stock holds the real count. Each linked listing gets its Shopify quantity from it.
Price	$9.99/month (Basic) or $16/month (Advance, with an API). 7-day free trial. No free plan.	Free for up to 10 base stocks. Pro is $9.99/month with no limit and a 30-day free trial.
Online and at POS	The listing does not say.	Yes. A sale online or at the register takes from the same base stock.
Kits and bundles	Yes. Bundles with components.	Yes. A listing can use several base stocks, with a number per sale such as 2 or 0.5.
Stops a cart before payment	The listing does not mention a checkout check.	Yes, if you turn it on. The checkout rule stops a cart that needs more base stock than you have.
Preview before it changes stock	The listing does not mention a preview or test mode.	Yes. Preview mode writes nothing to Shopify until you press Go live.
Several stores	No. The listing says it supports multi-location inventory in one store.	No. OneShelf works inside one store.
On the App Store since	January 9, 2017	October 5, 2026
Rating	3.9 stars from 51 reviews	New. See the listing.

The Connected Inventory facts are from its App Store listing on November 4, 2026. "The listing does not say" means that the fact is not on the listing. It does not mean that the app cannot do it.

What reviewers report

These are recent reviews with 1 to 3 stars, from the Connected Inventory reviews. One review is one store's experience. Read the full reviews and the developer's replies before you decide.

1 star · August 31, 2025

“Whenever you couple inventory with each other, and something gets sold, the app messes up the whole supply into minus.”

1 star · March 19, 2025

“It stops working randomly, and the consequence is that you cannot run a reliable business”

3 stars · April 9, 2025

“we have hundreds of bundles configured. Lacking features for making creating, maintenance and reporting easier.”

When Connected Inventory is the better choice

You want an app with a long history. Connected Inventory has been on the App Store since 2017.
You need an API to manage inventory groups from your own tools.

When OneShelf fits better

You want to start free. OneShelf is free for up to 10 base stocks.
You want a cart that asks for too much to stop before payment.
You want to watch real orders in Preview mode before anything changes.

How to move from Connected Inventory to OneShelf

Export your inventory from Shopify. Go to Products, then Export. Keep the file as a record of your numbers today.
Install OneShelf. It starts in Preview mode, so it writes nothing to Shopify.
Create a base stock for each shared item. Count the real shelf. Link the listings that sell it. OneShelf shows each listing's quantity now and after, before you save.
Watch a few real orders in Preview mode. The Activity page shows what OneShelf would take for each order.
Turn off the sync in Connected Inventory for the listings you linked. Only one app should set the stock of a listing. OneShelf warns you if a listing changes outside OneShelf.
Press Go live. Then turn on the checkout rule in Settings, if you want a cart that asks for too much to stop before payment.
Uninstall Connected Inventory when you are sure. Check a few listings after, and compare them with your export.

If you need help with the move, write to [email protected]. A real person answers.

Questions

Is OneShelf a good alternative to Connected Inventory?

It is if your listings share one real stock in one store, such as blanks, materials, or bulk stock. If you need to share stock between several stores, OneShelf does not do that.

Can I keep Connected Inventory installed while I try OneShelf?

Yes. OneShelf starts in Preview mode and writes nothing to Shopify. Before you press Go live, turn off the sync in Connected Inventory for the listings you link. Only one app should set the stock of a listing.

Will I lose my stock numbers when I move?

Export your inventory from Shopify first, so you have a record. When you create a base stock, OneShelf shows each listing's quantity now and after, and it changes nothing until you save.

How much does OneShelf cost?

OneShelf is free for up to 10 base stocks. Pro is $9.99/month with no limit, and it has a 30-day free trial.

Try OneShelf in Preview mode

OneShelf gives your listings one base stock. Every sale, online or at the register, takes from that one number. It is free for up to 10 base stocks.

Install on Shopify Open the demo store

The demo store password is shesta.

NASP Connected Inventory is a product of Not A Side Project. OneShelf is not related to Not A Side Project. If a fact on this page is wrong or old, write to [email protected] and we will correct it.