Inventory headaches are the silent killer of Shopify margins. One oversell and the customer’s mad, two more and the ad account’s bleeding cash on returns. The right app fixes that before it happens-syncing stock across every channel, forecasting what’s about to fly off the shelves, and automating reorders so nothing ever drops to zero at the worst possible moment. After digging through dozens of options and watching how they perform in real stores (from 7-figure fashion brands to niche supplement shops), these five stand out. They’re fast, reliable, and actually make running inventory feel easy instead of stressful. Let’s break down which one fits your setup best.
From Guesswork to Guaranteed Winners
We built Extuitive because watching Shopify founders burn weeks (and budgets) on ads that flop was painful. The old way meant paying agencies, running tiny tests, or just crossing fingers. We decided to flip that on its head with a system that creates and pressure-tests ideas before a single ad dollar gets spent.
Our platform runs an army of AI consumer agents trained on real shopping behavior. These agents look at copy, pricing, images, reels - anything that ends up in front of a customer - and score what actually moves people to buy. Generate dozens of variants, let the agents vote with their wallets, and surface the handful that consistently win. Merchants pick the winners, tweak if they want, and launch straight to Meta or TikTok.
1. Stock Sync
Suppliers feed data into stores through automated channels, pulling from ERP systems or warehouses without constant manual checks. Formats like CSV or XML slide in smoothly, updating stock levels and tweaking product details on the fly. Migration happens across platforms too, keeping everything aligned as listings evolve or get pulled from the lineup.
Custom fields tag along for extras, such as size specs or delivery timelines, while rules kick in to flag low counts before they turn into headaches. Exports loop back to vendors for their records, and discontinued items vanish from view with a simple setup. Compatibility stretches to tools like Google Sheets or FTP, handling the back-and-forth in whatever shape the info arrives.
Key Highlights:
- Automates updates from suppliers, ERP, and WMS sources
- Handles data in CSV, XML, XLSX, JSON, and custom formats
- Integrates with Google Sheets, FTP, API, and Shopify Flow
- Supports languages including English, Japanese, Chinese variants, German, French, Polish, Dutch, and Spanish
- Fits into store data importer and inventory sync categories
Services:
- Quantity rules to maintain stock accuracy
- Removal of discontinued products
- Export of stock data to suppliers
- Addition of metafields for product details like dimensions or ETA
Contact Information:
- Website: www.syncx.com
- Shopify App Store: apps.shopify.com/stock-sync
- Address: 5-13-05, Block 5, VSQ @ PJ City Centre, Jln Utara, 46200 Petaling Jaya, Selangor
- LinkedIn: www.linkedin.com/company/sync-x
- Facebook: www.facebook.com/syncXdata
- Twitter: x.com/SyncX_data
2. Prediko
Forecasts build out by product or season, drawing from sales history to sketch demand curves. Alerts pop up for reorder points, paired with tables that adjust buys based on trends. Orders form quickly, editable in batches and linked to storage systems for seamless handoffs.
Materials tracking starts with breakdowns of components, projecting needs ahead for production runs. Transfers shift goods between spots to even out levels, while reports compile in various sheets with filters for specifics. Sync keeps it all current with the main platform, no lag in the updates.
Key Highlights:
- Connects to over seventy WMS and 3PL options
- Offers languages like English, German, Spanish, French, Hebrew, Japanese, Russian, Swedish, Chinese Simplified, and Portuguese Brazil
- Spans categories such as inventory forecast, tracking, sales reports, management, and multi-location setups
- Syncs in real time with store data
- Handles bulk edits for SKUs and suppliers
Services:
- Demand forecasting by item, SKU, or period
- Replenishment alerts and buying recommendations
- Purchase order creation, tracking, and editing
- Bill of materials for raw material oversight
- Report exports in CSV or PDF with filters and templates
Contact Information:
- Website: www.prediko.io
- Shopify App Store: apps.shopify.com/prediko
- Address: Waverley House (Work.Life), 9 Noel Street, London, ENG, W1F 8GQ, GB
- LinkedIn: www.linkedin.com/company/prediko
- Facebook: www.facebook.com/goprediko
- Twitter: x.com/goprediko
3. SKULabs
Inventory syncs live across channels, reflecting changes as they hit from any angle. Picking routes guide through orders, with scans confirming each step to lock in precision. Labels print for carriers, pulling rates that fit the shipment size.
Warehouses operate under one dashboard, juggling receives and purchases without overlap. Orders route to the right spot, fulfillment wrapping up from start to label. Performance metrics track the flow, spotting bottlenecks in the process.
Key Highlights:
- Links with Amazon, eBay, Etsy, Walmart, Square, and TikTok
- Uses English throughout
- Covers inventory optimization and multi-channel management
- Manages multiple warehouses centrally
- Includes barcode and stock control tools
Services:
- Real-time inventory sync and control
- Order picking, packing, and shipping processes
- Purchase order handling and receiving
- Shipping label printing with carrier options
- Performance tracking from a single platform
Contact Information:
- Website: www.skulabs.com
- Shopify App Store: apps.shopify.com/skulabs
- Phone: +1 (800) 243-2986
- Email: sales@skulabs.com
- Address: 12450 NW 39th St Coral Springs, FL, 33065
- LinkedIn: www.linkedin.com/company/skulabs
- Facebook: www.facebook.com/people/SKULabs/61559147060308
- Twitter: x.com/skulabs
- Instagram: www.instagram.com/skulabs
4. Multi Store Inventory Sync
Changes in one store ripple out to every connected shop instantly - orders, refunds, restocks, all of it. Product details travel too: titles, prices, images, even metafields and collection assignments stay identical without copying anything by hand. New items added anywhere pop up everywhere else automatically.
Location-level rules let merchants decide exactly how stock moves or stays put between stores. Mismatches get flagged early so nothing drifts out of sync quietly. It’s built for people running several storefronts who don’t want to log in ten times a day to keep things straight.
Key Highlights:
- Real-time sync across multiple Shopify stores
- Covers inventory, products, collections, and metafields
- Handles new product creation automatically
- Supports location-specific sync rules
- Flags SKU and barcode mismatches
Services:
- Two-way inventory and product synchronization
- Automatic collection and metafield updates
- Real-time updates from orders and restocks
- Mismatch detection for SKUs and barcodes
Contact Information:
- Website: egnition.io
- Shopify App Store: apps.shopify.com/multi-store-inventory-sync
- Twitter: x.com/E_gnition
- Facebook: www.facebook.com/egnition
5. Veeqo
Orders from different sales channels land in one spot and ship out with whatever carrier makes sense that day. Inventory updates flow back to Amazon, eBay, Etsy, and Shopify stores the moment something leaves the warehouse. Shipping labels come with discounted rates, at least for US addresses, and credits offset the cost.
Profit numbers per channel show up alongside the usual order view, giving a quick read on what’s actually making money. The whole thing runs free until labels get printed, so the only real cost is postage. It’s the kind of setup that ties a bunch of marketplaces together without forcing anyone to jump between dashboards.
Key Highlights:
- Pulls orders from Amazon, eBay, Etsy, and Shopify
- Syncs inventory levels across connected channels
- Provides discounted rates from UPS, USPS, FedEx, DHL
- Shows profit analytics by channel
- Free until shipping labels are purchased
Services:
- Multi-channel order management
- Automatic inventory updates after shipping
- Label printing with carrier rate shopping
- Credit system for US shipping costs
Contact Information:
- Website: www.veeqo.com
- Shopify App Store: apps.shopify.com/veeqo
- LinkedIn: www.linkedin.com/company/veeqo
- Facebook: www.facebook.com/veeqo
- Twitter: x.com/veeqo
- Instagram: www.instagram.com/officialveeqo
6. Trunk
Stock levels stay matched across every place a store sells, whether that’s another Shopify shop, Amazon, Etsy, or even smaller platforms like Bandcamp or Faire. Bundles and kits pull from real component counts instead of pretending they have their own separate stock, so nothing oversells when a piece runs dry. Even duplicate SKUs inside the same store can share one pool if that makes life easier.
Low-stock pings land in the inbox before things get awkward, and the whole setup works fast even when someone’s juggling thousands of listings. Connecting new channels usually takes just a couple of clicks, then everything runs quietly in the background.
Key Highlights:
- Syncs inventory in real time across multiple sales channels
- Handles bundles and kitting with component tracking
- Sends low stock alerts
- Works with Amazon, eBay, Etsy, TikTok, Walmart, Square, and others
- English interface
Services:
- Real-time stock syncing by matching SKUs
- Bundle and kit inventory management
- Low stock notifications
- Unlimited channel connections on paid plans
Contact Information:
- Website: www.trunkinventory.com
- Shopify App Store: apps.shopify.com/trunk
- Address: 4470 W. Sunset Blvd., #96733, Los Angeles, CA, 90027, US
7. Notify Me! PreOrder & Restock
Out-of-stock buttons flip into “Notify Me” or straight pre-order options without touching theme code. Shoppers get emails or texts the moment something comes back, and stores can take money upfront on pre-orders if they want. Low-stock counters show “only a few left” on product pages to nudge people along.
Wishlist buttons work even for guests, so visitors can save stuff and come back later. The app talks to most common email and push tools, plus PageFly and similar page builders, which keeps everything looking consistent.
Key Highlights:
- Adds pre-order, notify-me, and wishlist buttons
- Sends restock alerts by email, SMS, or push
- Supports guest wishlists
- Works with Klaviyo, Omnisend, Mailchimp, PushOwl, and others
- Available in multiple languages including Spanish, French, German, Japanese
Services:
- Back-in-stock and pre-order notifications
- Low-stock “hurry” counters
- Partial payments and discount options on pre-orders
- B2B catalog-specific pre-order rules
Contact Information:
- Website: notify-me.io
- Shopify App Store: apps.shopify.com/preorder-back-in-stock
- Phone: +1 604-373-9085
- LinkedIn: www.linkedin.com/company/notify-me
- Facebook: www.facebook.com/notifyme.io
- Twitter: x.com/notifyme_io
8. QuickSync Etsy
Etsy listings stay in lockstep with Shopify stock the moment an order hits either side. Inventory counts adjust instantly across locations, so nothing oversells whether the sale came from an Etsy shopper or the main store. Products and orders flow one way or both, depending on how someone sets it up, keeping everything in Shopify as the single source of truth.
The connection leans heavily on Etsy’s own API, which keeps the sync reliable even when traffic picks up. Merchants who sell the same items on both platforms usually reach for this one because it cuts out the constant double-checking.
Key Highlights:
- Real-time inventory sync between Shopify and Etsy
- Handles product and order syncing
- Works across multiple locations
- English interface
- Built specifically for Etsy integration
Services:
- Automatic stock updates from Etsy sales
- Product management from Shopify to Etsy
- Order import into Shopify
- Location-aware inventory tracking
Contact Information:
- Website: quicksync.pro
- Shopify App Store: apps.shopify.com/quicksync-etsy
- Email: hr@itsquick.co
9. Katana Cloud Inventory
Manufacturing workflows sit right next to regular sales channels, so raw materials and finished goods stay tracked in one place. Purchase orders come out of actual production needs instead of guesses, and multi-location fulfillment pulls from whatever warehouse has stock. Sales orders from Shopify or anywhere else feed straight into the planning queue.
Accounting links push the numbers to QuickBooks or Xero when things ship or arrive, closing the loop without extra spreadsheets. Shops that make their own products tend to lean on this setup because it handles bills of materials and shop-floor scheduling alongside normal ecommerce.
Key Highlights:
- Covers manufacturing and multi-channel sales
- Tracks raw materials and finished goods
- Connects to QuickBooks, Xero, Salesforce, Zapier
- Handles production planning and scheduling
- English interface
Services:
- Multi-location inventory control
- Purchase order creation from material requirements
- Centralized fulfillment across channels
- Resource allocation and shop-floor management
- Data export to accounting software
Contact Information:
- Website: katanamrp.com
- Shopify App Store: apps.shopify.com/katana-mrp-manufacturing-and-inventory-management
- Email: careers@katanamrp.com
- Address: Peetri 7, Tallinn, 10415, EE
- LinkedIn: www.linkedin.com/company/katanamrp
- Facebook: www.facebook.com/katanamrp
- Instagram: www.instagram.com/insidekatana
10. Thrive by Shopventory
Bundles break down to component level, so selling a gift set correctly dips into each piece of stock. Forecasting pulls from past sales to flag what needs reordering before it runs dry, and reports cover pretty much any angle someone wants to look at. Multiple Shopify stores or POS systems tie into the same dashboard without much fuss.
Barcode scanning speeds up counts and receiving, and the whole thing works offline if the internet drops for a bit. Stores with complicated inventory or several sales points usually end up here because the reports actually answer questions instead of just dumping numbers.
Key Highlights:
- Component-level bundle tracking
- Demand forecasting and custom alerts
- Connects Square, Clover, WooCommerce, Google Shopping
- Barcode scanning for counts and receiving
- Works with multiple Shopify accounts
Services:
- Prebuilt and custom reporting
- Automated purchase orders and reorder points
- Multi-location and multi-channel syncing
- Vendor management and invoicing
- COGS and profitability tracking
Contact Information:
- Website: thrivemetrics.com
- Shopify App Store: apps.shopify.com/shopventory
- Phone: 858-271-4000
- Email: help@thrivemetrics.com
- Address: 8310 South Valley Highway, Suite 300, Englewood, CO, 80112, US
- LinkedIn: www.linkedin.com/company/shopventory
- Facebook: www.facebook.com/shopventory
- Instagram: www.instagram.com/shopventory
11. Fabrikator
Forecasts at the SKU level pull from sales patterns to spot when restocks make sense, with alerts tied to those projections. Purchase orders build out with supplier details and deadlines, automating the send if the setup calls for it. Multi-location views show where stock sits, so planning doesn't ignore what's already on hand across warehouses.
Marketing campaigns feed into the mix, aligning inventory pushes with promo timing to avoid surprises. Integrations with tools like Klaviyo or QuickBooks handle the handoffs, keeping financials and customer flows in sync without extra steps. Stores scaling up often find this replaces the endless spreadsheet juggling.
Key Highlights:
- Tracks inventory in real time across locations
- Forecasts demand using sales stats
- Connects to Klaviyo, QuickBooks, Xero, ShipHero, Katana
- Handles collaborative planning with marketing schedules
- English interface
Services:
- SKU-level inventory planning and alerts
- Automated purchase order creation and tracking
- Demand forecasting for long-term restocks
- Cost and supplier management in orders
Contact Information:
- Website: www.fabrikator.io
- Shopify App Store: apps.shopify.com/fabrikator
- Email: contact@fabrikator.io
- Address: Kolonnenstraße 8, 10827 Berlin, Germany
12. Sellbrite
Shopify acts as the central spot for all product data, pushing listings out to Amazon, eBay, Walmart, or Etsy with inventory counts attached. Orders from those sites pull back into Shopify for packing and shipping, blending them with direct store sales. Variant setups apply across platforms, so a size or color option shows consistent stock everywhere.
Warehouse stock from multiple spots factors into what's listed, preventing empty promises on distant marketplaces. Bulk uploads handle new items fast, and price changes sync on a schedule depending on the plan. Merchants splitting sales across channels stick with this because it keeps the main store in charge without constant tweaks.
Key Highlights:
- Syncs inventory and prices across marketplaces
- Supports Amazon, eBay, Walmart, Etsy, Google
- Handles unlimited channels and users on paid plans
- English only
- Covers marketplaces and inventory sync categories
Services:
- Automatic inventory adjustments to avoid oversells
- Variation listing creation and management
- Bulk product listing to new channels
- Order fulfillment from Shopify for all sources
Contact Information:
- Website: www.sellbrite.com
- Shopify App Store: apps.shopify.com/sellbrite
- Address: 44 W. Green St., Pasadena, CA, 91105, US
- LinkedIn: www.linkedin.com/company/sellbrite
- Facebook: www.facebook.com/sellbrite
- Twitter: x.com/sellbrite
- Instagram: www.instagram.com/sellbrite
Conclusion
Picking an inventory app basically comes down to what’s actually breaking in your store right now. If oversells keep happening and you’re losing sleep over it, start with something that locks stock levels across every channel in real time. If you’re making your own products and juggling raw materials, you’ll want the manufacturing-focused ones that track components and spit out purchase orders without you doing the math. Smaller shops that just need to stop selling things they don’t have can often get away with the dead-simple CSV or barcode scanners and call it a day.
At the end of it, the “best” one is the app you actually use every day without cursing at the screen. Most of them have free trials or cheap starter plans, so set up two or three that look close, throw some real orders at them for a week, and see which one feels like it disappears into the background instead of adding another chore. The moment stock just works and you stop thinking about it, that’s the winner.
