424 Inventory Sync vs Shared Stock Sync
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 Shared Stock Sync.
The short answer
- Paid plans start at $4.99/month for 424 Inventory Sync and $9.99/month for Shared Stock Sync.
- 424 Inventory Sync lists 2 features Shared Stock Sync’s listing doesn’t mention, including SKUs, Workflow automation.
Head to head
Basic
- · Auto-sync by SKU across products/variant
- · Real-time updates on sales and manual ed
- · “Sync now” button plus a list of duplica
Standard
- · Deducts products when a pack sells
- · Pack stock from component inventory
- · Prevents overselling kits
- · Updates pack when a product sells
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.
You already created a pack in Shopify. Shared Stock Sync does not create packs. It keeps pack stock honest so you do not oversell kits. With 6 blue tees and 10 pink tees, a pack of one each can sell 6 times. A blue tee sale drops pack stock to 5. A pack sale deducts one of each. Link the pack to each product and quantity needed. Stock updates when inventory changes or a pack sells.
- 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
- Pack stock matches how many complete kits you can still make.
- When a pack sells, the products in the kit are deducted.
- When a product sells on its own, pack stock updates immediately.
- See calculated pack stock and whether sync is up to date.
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 | |
|---|---|---|
| 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 | |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 1 | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | 424 Inventory Sync | |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $4.99/month(ahead) | $9.99/month |
| Longest free trial | 7 days | 7 days |
| Plans listed | 1 | 1 |
Listing
| Measure | 424 Inventory Sync | |
|---|---|---|
| Shopify category rank | #217 | Not enough data |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Aug 22, 2025 | Nov 3, 2026 |
| Languages | 1 | 1 |
| Developer | 424 Solutions LLC | Brandionary |
FAQ
424 Inventory Sync and Shared Stock Sync: common questions
- Is 424 Inventory Sync or Shared Stock Sync cheaper?
- Paid plans start at $4.99/month for 424 Inventory Sync and $9.99/month for Shared Stock Sync. 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?
- 424 Inventory Sync lists 2 the others don’t mention, such as SKUs, Workflow automation. Shared Stock Sync lists 1 the others don’t mention, such as Inventory tracking. 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 Shared Stock Sync; 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 Shared Stock Sync. 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.