424 Inventory Sync vs AisleSpark Inventory Rebalance
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 $4.99/month for 424 Inventory Sync and $30/month for AisleSpark Inventory Rebalance.
- 424 Inventory Sync lists 3 features AisleSpark Inventory Rebalance’s listing doesn’t mention, including Inventory sync, 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
Starter
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.
AisleSpark Inventory Rebalance analyzes stock across locations, flags imbalances before they cause stockouts, and recommends prioritized transfer plans. Create draft transfers from recommended moves with one confirmation. Built for merchants with 2+ locations who need to balance inventory across stores or warehouses.
- 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
- Smart analysis of multi-location stock gaps
- Guided transfer plans with one-click drafts
- Live location metrics and maintenance status
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 |  AisleSpark Inventory Rebalance |
|---|---|---|
| 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 | AisleSpark Inventory Rebalance |
|---|---|---|
| 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 | AisleSpark Inventory Rebalance |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $4.99/month(ahead) | $30/month |
| Longest free trial | 7 days | 30 days |
| Plans listed | 1 | 1 |
Listing
| Measure | 424 Inventory Sync | AisleSpark Inventory Rebalance |
|---|---|---|
| Shopify category rank | #181 | 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 | Dec 2, 2025 |
| Languages | 1 | 1 |
| Developer | 424 Solutions LLC | AisleSpark |
FAQ
424 Inventory Sync and AisleSpark Inventory Rebalance: common questions
- Is 424 Inventory Sync or AisleSpark Inventory Rebalance cheaper?
- Paid plans start at $4.99/month for 424 Inventory Sync and $30/month for AisleSpark Inventory Rebalance. 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 3 the others don’t mention, such as Inventory sync, SKUs, Workflow automation. AisleSpark Inventory Rebalance lists 3 the others don’t mention, such as Inventory planning, Stock replenishment, Stock transfer. 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.