424 Inventory Sync vs SimpleSync » Sync by SKU
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 14, 2026 for 424 Inventory Sync, Nov 3, 2026 for SimpleSync » Sync by SKU.
The short answer
- On the Shopify App Store: 424 Inventory Sync 5.0 from 1 reviews and SimpleSync » Sync by SKU 4.5 from 21 reviews.
- Paid plans start at $4.99/month for 424 Inventory Sync and $10/month for SimpleSync » Sync by SKU.
- SimpleSync » Sync by SKU lists 2 features 424 Inventory Sync’s listing doesn’t mention, including Auto-processing, Real-time updates.
Head to head
Sync inventory between products and variants
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Basic
- · Auto-sync by SKU across products/variant
- · Real-time updates on sales and manual ed
- · “Sync now” button plus a list of duplica
Shopify shops
Shopify Plus shops
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every feature424 Inventory Sync keeps stock levels consistent across products and variants that share a SKU. When inventory changes from sales or edits, it mirrors available quantity per location to all matches—automatically. It’s lightweight and focused (no bells and whistles) with a manual “Sync now” fallback.
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!
- Auto-sync by SKU across products/variants per location
- Real-time updates on sales and manual edits
- “Sync now” button plus a list of grouped SKUs
- 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.
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 |  424 Inventory Sync |  SimpleSync » Sync by SKU |
|---|---|---|
| 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 | 424 Inventory Sync | SimpleSync » Sync by SKU |
|---|---|---|
| App Store rating | 5.0 ★(ahead) | 4.5 ★ |
| App Store reviews | 1 | 21(ahead) |
| New reviews, 28 days | Not enough data | 1 |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | 424 Inventory Sync | SimpleSync » Sync by SKU |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $4.99/month(ahead) | $10/month |
| Longest free trial | 7 days | 7 days |
| Plans listed | 1 | 2 |
Listing
| Measure | 424 Inventory Sync | SimpleSync » Sync by SKU |
|---|---|---|
| Shopify category rank | #181 | #63(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Aug 22, 2025 | Feb 6, 2014 |
| Languages | 1 | 1 |
| Developer | 424 Solutions LLC | Gazebo |
FAQ
424 Inventory Sync and SimpleSync » Sync by SKU: common questions
- Is 424 Inventory Sync or SimpleSync » Sync by SKU cheaper?
- Paid plans start at $4.99/month for 424 Inventory Sync and $10/month for SimpleSync » Sync by SKU. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Which has better reviews, 424 Inventory Sync or SimpleSync » Sync by SKU?
- On the Shopify App Store: 424 Inventory Sync 5.0 from 1 reviews and SimpleSync » Sync by SKU 4.5 from 21 reviews.
- What features does each app list that the other doesn’t?
- 424 Inventory Sync lists 1 the others don’t mention, such as Workflow automation. SimpleSync » Sync by SKU lists 2 the others don’t mention, such as Auto-processing, Real-time updates. 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 for 424 Inventory Sync, Nov 3, 2026 for SimpleSync » Sync by SKU; 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 for 424 Inventory Sync, Nov 3, 2026 for SimpleSync » Sync by SKU. 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.