SkuHarmony

Sync Your Inventory Between Your Store and 1 Square Location.

by SkuHarmony · Launched: April 2018

4.4 (17) on Shopify

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SkuHarmony seamlessly connects to your Square store to sync both stores' inventory levels

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About SkuHarmony

SkuHarmony makes it easy to sell in both Shopify and Square, and have your inventory synchronized between both systems. When a product is sold in one, we remove it from the other so that you never oversell, and don't have to make these changes manually.

Last verified: August 23, 2026 · Fresh

App details

Developer: SkuHarmony
Category: Orders & shipping
Pricing: Paid
Launched: April 2018
Rating: 4.4 (17) on Shopify

Key features

Real-time inventory syncing
View shopify and Square catalogs
Copy products/variations across catalogs

Integrations with:

Square

1 plan · 14-day free trial

Automatic Sync

$49.99/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 35 Shopify App Store reviews

Use the arrows to read individual reviews

if you are looking for an app to connect the inventory of shopify with Square, this is the app to use. We have had excellent results and the support from SkuHarmony has been above and beyond what I had expected.

— jaxandmel

If you use Square and also have a website with shopify I HIGHLY RECCOMEND this app! It has made my life so much better! When I add anything to my website I am only One click away from adding to my Square! Anytime i scan something out of my Store with Square this app also takes it out of inventory on shopify and the other way around as well! It is worth every cent! Just download it and see for your...

— Shopsweet.southern

I really love the ease of use of the app! it makes keeping my square inventory connected with my shopify inventory seamless and smooth; the integration and interface are super simple and easy to understand and use. this app makes my busy life just that much easier, and that way i can better serve my patrons!

— frog + fern

I have been using this app for a couple of years now, I sell online and have a brick & mortar store so for the inventory to be adjusted immediately is imperative. This is an amazing app in a the price range I can handle. First off they have a free plan which makes it soooo easy to do yourself, just a little time consuming or upgrade and let it work for you. I have used other plans and the inventor...

— Posh Society

Excellent app, It fits my stores needs very well. We use square in our Brick and mortar store but we had a hard time syncing our inventory with shopify but once we started using SkuHarmony keeping our shopify and Square inventory in sync was so much easier. I even use the app to add new product to my square store. Uploading the product to both at the same time makes my life alill less stressful....

— Dragon Imports and Collectibles - Funko, Pokemon, Board games and more!

A little slow start but once I received help from the app designer things got better. I love how I can sync my shopify store with square perfect for a summer pop up shop I am attending in a few weeks.

— Valomie Boutique

This app really helped us streamline our operations. We used it to copy all of our products from Shopify to Square and then enabled auto-sync. Perfection!

— bongo-packs

Just getting started but so far everything works great and customer support has been fantastic! Thank you for making small-business life easier!

— NØRDIK

Love this - as our business has grown this has saved us from many potential awkward 'out of stock' issues for online orders. Couldn't keep on top of our almost 1000 product lines with out it. Clone function has been really helpful too but find it lumps some products in all together with others of the same brand, where I'd prefer them listed as separate products on the website. Otherwise - fantast...

— Local Pantry Co.

We use this app a lot in our very busy boutique! It helps us keep our inventory correct between our brick and mortar store and our online store. We couldn’t keep our inventory organized without it!

— Ruby's Pearls

We LOVE this app! We searched for a long time to find the solution to using Shopify for our online store and Square in our Brick and Mortar. We really didn't want to stop using Square. Squarify saved us! It is really easy to use and navigate. It is quick to update everything and shows very clearly what needs to be updated. Being able to review any discrepancies in one place is a great time saver a...

— Giving Gifts

I used this app to sync my inventory in Shopify and Square so that we would have a real-time count of our inventory online as well as in our store. And this will save us lots of time at the end of the year when we need to do a product count. Very easy to use and manage.

— Bob Moog Foundation

I would honestly give this app a zero because that's what it deserves. It doesn't work. It's customer service is not good and it has made so much more work for me to clean up what it's app broke between Shopify & Square. The amount of duplicates the app has created is ridiculous. They should be paying me to clean up their messes. This app shouldn't be allowed on either Shopify or Square's platform...

— Brooklyn and Rye

I needed this app for a transition from Square to Shopify. This is the absolute worst app for this task. Half the time SkuHarmony won't open and the other half of the time it takes a half hour to load just to end up crashing. I do not recommend.

— Xtra 101

This app is pretty bad. I spent days setting up SKUs and entering inventory. Signed up for the auto sync at $50 a month. It’d be worth that if it worked. Shopify orders aren’t decreasing inventory in Square and Square sales aren’t decreasing inventory in Shopify, except one in about 10 inventory changes (an order for 4 products correctly changed inventory for only one of them). Inventory is random...

— Glitz Soap Co.

SkuHarmony's customer service is horrible! After deleting the Skuharmony's App, due to its poor performance and the hardships I suffered due to the economic crisis from covid-19, I still got charged. I reached out to Shopify a few days later when the funds came out of my account. Shopify was helpful and understanding. They reached out to SkuHarmony for a much needed refund. This is the response I...

— J. DOSI

I'm trying to use this app to sync my square brick and mortar and my online, however customer service is so lacking that they don't even write back for weeks to help me get set up. Please check / answer your emails guys!! Thank you for your reply. We would appreciate a call back or email to help us get this app set up. Thank you Kindly.

— Pachulah

Every time I add inventory to Square, the numbers in Shopify get screwed up. It often goes rogue, altering inventory numbers when no transactions have taken place to change numbers. Auto-sync works sporadically. Heading into the holiday season, I really need to trust the sync between Square and Shopify but cannot with SkuHarmony.

— Bergstrom-Mahler Museum of Glass

It worked great for almost a year, then they updated the app supposedly. The customer service was really lacking. The person I spoke with was very cavalier. (As if it did not mater that my inventories were not synced daily from my POS to my website.) Now, it does not work at all! I went to remove the app to try and reinstall it. The plan I was using is no longer available. But they do have a plan...

— Wild Spirit Herbals

It worked for a few months then stopped working. The new support guy told me that my account had been disabled because I had 5,000 items in Square and their new limit is 2,500.

— Happy Soles Footwear

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