At Once Inventory vs Inventory & Multi Store 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 At Once Inventory, Nov 8, 2026 for Inventory & Multi Store Sync.
The short answer
- On the Shopify App Store: At Once Inventory 5.0 from 1 reviews and Inventory & Multi Store Sync 4.6 from 71 reviews.
- Only Inventory & Multi Store Sync lists a free plan. Paid plans start at $125/month for At Once Inventory and $9.99/month for Inventory & Multi Store Sync.
- At Once Inventory lists 6 features Inventory & Multi Store Sync’s listing doesn’t mention, including Barcodes, Import and export, Multi-location.
Head to head
- United States
- Australia
- Canada
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Monthly Plan
- · CSV Import & Exports
- · Forecasting & low stock notifications
- · Inventory drift log from Shopify errors
- · Multi-location stock tracking
- · Purchase Orders & Receiving
- · Stock takes
Free
- · 24/7 Live chat support
- · Material, Bundle, Variant, SKU sync
- · Multi-store sync: Up to 50 products
- · Page, Blog, Metafield sync
- · Real-time Inventory & Order sync
- · Single-store sync: First 150 syncs free
Pro
- · 24/7 Live chat support
- · Material, Bundle, Variant, SKU sync
- · Multi-store sync: Up to 500 products
- · Page, Blog, Metafield sync
- · Real-time Inventory & Order sync
- · Single-store sync: Unlimited syncs
Premium
- · 24/7 Live chat support
- · Material, Bundle, Variant, SKU sync
- · Multi-store sync: Up to 5,000 products
- · Page, Blog, Metafield sync
- · Real-time Inventory & Order sync
- · Single-store sync: Unlimited syncs
Enterprise
- · 24/7 Live chat support
- · Material, Bundle, Variant, SKU sync
- · Multi-store sync: Unlimited products
- · Page, Blog, Metafield sync
- · Real-time Inventory & Order sync
- · Single-store sync: Unlimited syncs
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureAt Once gives Shopify merchants complete inventory control. Track stock live across all locations, manage your full product catalog, and create products with auto-generated SKUs and barcodes. Scan barcodes for stocktakes and receiving. Import and export via CSV, bulk edit variants, run detailed stocktakes, and transfer stock between locations. Purchase orders, returns, edits, and cancellations sync automatically.
Easify Inventory Sync eliminates the chaos that causes overselling. Inside one store, keep duplicate SKUs, product variants with shared inventory, bundle inventory, raw materials perfectly aligned. With multistore sync, connect multiple Shopify stores to sync products, collections, inventory, orders, pages, blogs, metafields. Built for merchants who can’t risk stock mistakes, slow syncs, or unreliable apps.
- Build and manage your full product catalog with auto-generated SKUs and barcodes
- Create purchase orders by location, scan to receive, and push stock to Shopify
- Adjust inventory across all locations in real time with bulk edit and CSV export
- Run multi-user stocktakes by location with barcode scanning and auto-save
- Duplicate SKUs: Unisex tees, Blank & Personalized tees, Retail & Wholesale items
- Bundles (Set): Stationery, Top & Skirt, Candles, Perfume, Mixed Sweets, Gift Box
- Raw Materials: Roast Coffee, Tea Leaves, Herb, Spices, Salts, Baking Ingredients
- "Pack of X": Multivitamins, Beverages, Incense Sticks, Batteries, Flowers, Tops
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 |  At Once Inventory |  Inventory & Multi Store Sync |
|---|---|---|
| Detected stores | Not published | 161 |
| Net store change, 28 days | 0 | +6 |
| Stores added, 28 days | Not enough data | 15 |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Apparel & Accessories, Home & Garden, Arts & Entertainment |
| Top store countries | Not published | United States, Australia, Canada |
Reviews
| Measure | At Once Inventory | Inventory & Multi Store Sync |
|---|---|---|
| App Store rating | 5.0 ★(ahead) | 4.6 ★ |
| App Store reviews | 1 | 71(ahead) |
| New reviews, 28 days | Not enough data | 0 |
| Reviewers a year or more in | Not enough data | 10% |
Pricing
| Measure | At Once Inventory | Inventory & Multi Store Sync |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | $125/month | $9.99/month(ahead) |
| Longest free trial | 14 days | Not listed |
| Plans listed | 1 | 4 |
Listing
| Measure | At Once Inventory | Inventory & Multi Store Sync |
|---|---|---|
| Shopify category rank | #248 | #14 |
| Shopify App Charts | Not on this week’s charts | #2 in Inventory sync |
| Built for Shopify | No | Yes |
| Launched | Apr 30, 2026 | Aug 9, 2024 |
| Languages | 1 | 1 |
| Developer | At Once | Invento |
FAQ
At Once Inventory and Inventory & Multi Store Sync: common questions
- Is At Once Inventory or Inventory & Multi Store Sync cheaper?
- Only Inventory & Multi Store Sync lists a free plan. Paid plans start at $125/month for At Once Inventory and $9.99/month for Inventory & Multi Store 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.
- Which has better reviews, At Once Inventory or Inventory & Multi Store Sync?
- On the Shopify App Store: At Once Inventory 5.0 from 1 reviews and Inventory & Multi Store Sync 4.6 from 71 reviews.
- What features does each app list that the other doesn’t?
- At Once Inventory lists 6 the others don’t mention, such as Barcodes, Import and export, Multi-location, SKUs. Inventory & Multi Store Sync lists 6 the others don’t mention, such as Analytics, Email notifications, Low stock alerts, Replenishment reminders. 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 At Once Inventory, Nov 8, 2026 for Inventory & Multi Store 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 At Once Inventory, Nov 8, 2026 for Inventory & Multi Store 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.