DeltaSync — Inventory Sync vs SkuHarmony
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 14, 2026.
The short answer
- Paid plans start at $29/month for DeltaSync and $49.99/month for SkuHarmony.
- SkuHarmony lists 6 features DeltaSync’s listing doesn’t mention, including Data import and export, Multi-channel, Multi-store.
Head to head
Sync Your Inventory Between Your Store and 1 Square Location.
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
DeltaSync Standard
Automatic Sync
- · Copy products/variations across catalogs
- · Real-time inventory syncing
- · View shopify and Square catalogs
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureDeltaSync keeps stock levels aligned across your Shopify stores. When inventory changes in your source store, DeltaSync updates the matching product in every connected store within seconds, matching items by SKU. Set an optional buffer to hold back safety stock on each target store.
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.
- Real-time inventory sync between your connected Shopify stores
- SKU-based product matching across stores — no spreadsheets or CSV imports
- Optional safety-stock buffer held back on the target store
- Failed updates are retried automatically until they apply
- Automatically synchronize your inventory to Square
- Clone Products between Square and Shopify with a single click
- Near Real-time adjustments
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  DeltaSync |  SkuHarmony |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | DeltaSync | SkuHarmony |
|---|---|---|
| App Store rating | Not published | 4.4 ★ |
| App Store reviews | Not published | 17 |
| New reviews, 28 days | Not enough data | 0 |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | DeltaSync | SkuHarmony |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $29/month(ahead) | $49.99/month |
| Longest free trial | 7 days | 14 days |
| Plans listed | 1 | 1 |
Listing
| Measure | DeltaSync | SkuHarmony |
|---|---|---|
| Shopify category rank | Not enough data | #143 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jun 12, 2026 | Apr 6, 2018 |
| Languages | 1 | 1 |
| Developer | DeltaSync Solutions | SkuHarmony |
FAQ
DeltaSync and SkuHarmony: common questions
- Is DeltaSync or SkuHarmony cheaper?
- Paid plans start at $29/month for DeltaSync and $49.99/month for SkuHarmony. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- DeltaSync lists 5 the others don’t mention, such as Automated alerts, Error reports, Real-time, Real-time status. SkuHarmony lists 6 the others don’t mention, such as Data import and export, Multi-channel, Multi-store, Orders. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 14, 2026; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 14, 2026. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.