SimpleSync » Sync by SKU

Sync inventory between products and variants

by Gazebo · Launched: February 2014

4.0 (19) on Shopify Built for Shopify

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SimpleSync keeps inventory in sync based on the SKU for two or more products.

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About SimpleSync » Sync by SKU

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! SimpleSync does the rest automatically. 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. Show more Show less

Last verified: July 17, 2026 · Fresh

App details

Developer: Gazebo
Category: Orders & shipping
Pricing: Paid
Launched: February 2014
Rating: 4.0 (19) on Shopify

Key features

SimpleSync keeps inventory in sync based on the SKU for two or more products

2 plans · 7-day free trial

Shopify shops

$10/month

Shopify Plus shops

$15/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 31 Shopify App Store reviews

Use the arrows to read individual reviews

App working great so far. We sell uniforms for different schools that share the same SKU's. This allows us to keep our inventory accurate between different product variants. Harold is very responsive and helpful. Happy customer so far.

— Lasalle Uniform

Great app, simple and effective. Friendly and helpful support.

— Avanetaa

This app solves a fundamental issue for our store super elegantly and with hardly any oversight/setup. In addition, whenever I have run into a slight issue, Harold has been very quick to respond and help me get it resolved. Highly recommended!

— Types & Symbols

This app!!! Solves the problem with Shopify not allowing merchants to set stock to the product level. Let me tell you how bummed out I was when I spent the last year working on migrating to Shopify from WooCommerce and not being able to set stock at the product level. Shopify only allows you to set stock to the variant level. As I only sell limited edition prints offered in multiple sizes. I coul...

— DEMO - SOA

The app worked perfectly for 2 1/2 years for us. We no longer need the app to run a sync with shared products/virtual products, but I would highly recommend!

— Lycette Designs

Used to sync the inventory quantity of my product variants. Easy to install, easy to understand and if you need help Harold is always an email away.

— Bulbs Direct

I needed this app to sync the inventory quantity of variants and this worked for us! We sell customizable journals/notebooks. Each notebook cover is listed as a separate product in our shop with variants for the paper that goes inside them. We don’t need to control the inventory for the paper, but we did want to control the inventory for the covers. Shopify didn’t have this capability so we sea...

— Juniper Grove

PERFECT! This app solved my problem with having different prices on POS and online for the same product. Well worth the money every month. Simple and automatic. Support is very fast too!

— Keuka Outlet

The app works. This app is a life saver if you have a lot of products sharing the same SKU. There will be issues with updating time if you have a lot of duplicate SKUs to update through this app. However, this is the only solution there is. Harold responds quite quickly to questions and issues.

— Teezindia

This app works perfectly for my small business. I sell custom made candles and needed to count the amount of stock (jars and containers) but not the individual scents I pour the candles in for my customers. I am not tech savvy at all but found it easy to set up, all I needed to do was set the same SKU for each container and its variants. I watched the first order come in since installing it and li...

— Pure Tranquility Candles

Harold is incredibly helpful and replied to all my emails quickly, helping me to set up the app to work in my shop. I was searching for months for a way to synchronise inventory for different variants of the same item and this app does exactly what I need. Highly recommended!

— Delicious Monster Tea

Love using simplesync - it's easy to install and start using, super straightforward, does exactly what it's named after. The one time I had an issue with it, Harold was quick to respond and fix the problem. Love the new update - being able to choose between viewing all your SKUs, or only duplicated ones is a great feature.

— Nettlestale

This app often takes weeks or months to get around to updating the new inventory quantities across the duplicate SKUs

— Evan Designs

Inventory keep getting out of sync. There's no logs or anyway to check why it keep getting out of sync.

— 1866nippers

10 $ für nichts.

— Twoda Shop

App use to work but the past 7 months I have had to login to simplesync and manually sync everything

— Ooh La Lou

This app was not very useful to me. I sell handmade notebooks. I have several different cover designs, each of which can be made with 6 different page options inside. I have virtually unlimited supply of pages, but only limited number of each cover. So if I have 5 covers left, I need to be able to link my page variants so that all 6 options are still available to customer, but no matter which comb...

— Little Deer Studio

Two stars for Harold actually responding to emails. Other than that, SimpleSync did not work. We have a very basic setup - 2 SKUs, 3 variants each, no custom code apart from a warehouse that sends Shopify the physical count of each SKU once an hour. SimpleSync failed to work for us - it decremented only the variant sold, and a few minutes later, the inventory went right back *up*. Harold is adaman...

— Spoonfullone

They charged $40 dollars $10*4., it's said 7 days trial but that's totally not. and I am not even using now, I uninstalled already. If anyone needs to see invoice let me know.

— Salttree