5 Best Shopify Inventory Management Apps in 2026 (Free & Paid)

Inventory mistakes are some of the most expensive errors a Shopify store can make. A stockout sends a ready buyer to a competitor. Overselling forces you to cancel orders and erodes trust. Deadstock quietly ties up cash you could be spending on products that actually move.

For years, many merchants leaned on Shopify’s free Stocky app to stay on top of this. That option is going away. Shopify delisted Stocky from the App Store in February 2026, and the app stops working entirely on August 31, 2026. If you relied on Stocky for purchase orders, stock transfers, or basic forecasting, you now need a replacement, and Shopify’s native admin tools only cover part of what Stocky did.

That shift has pushed inventory management apps from optional to essential for most growing stores. The right one tracks stock in real time across every channel, forecasts what you need to reorder and when, and prevents the overselling and stockouts that cost you sales.

The challenge is choosing one. The Shopify App Store lists thousands of inventory apps, and they vary widely in what they actually do. We tested the field on forecasting accuracy, multichannel sync, purchase order handling, integrations, pricing, and merchant reviews. Below are the five we recommend in 2026, with the use case each one handles best. The three we recommend most highly are:

• Sumtracker for multichannel sellers who need real-time inventory sync across Shopify, Amazon, Etsy, and eBay to stop overselling.
• Prediko for DTC brands that want AI demand forecasting and fast purchase order creation in one Shopify-native app.
• Fabrikatör for merchants migrating off Stocky who also want to turn out-of-stock products into revenue with backorders.

Let’s get into it.

1. How we tested these apps

The Shopify App Store lists thousands of inventory tools, and most of them solve only one slice of the problem. Some forecast demand but ignore multichannel sync. Others sync stock across marketplaces but offer no purchase order workflow. To find apps that hold up in a real store, we evaluated each one across six areas.

• Forecasting and replenishment. Does the app predict demand at the SKU level using your sales history and seasonality, or does it only show current stock counts? The stronger tools also recommend reorder quantities and timing, so you are not doing the math by hand.
• Multichannel and multi-location sync. For stores selling beyond Shopify, we checked for real-time, two-way sync across Amazon, Etsy, eBay, POS, and multiple warehouses. This is what prevents you from selling the same unit twice.
• Purchase order and supplier management. We looked at how well each app creates purchase orders, tracks supplier costs and lead times, and manages incoming stock so you know what is arriving and when.
• Shopify nativeness. We gave extra weight to apps that integrate deeply with Shopify admin and POS, and to those carrying the “Built for Shopify” badge, which requires a higher integration standard than a standard listing.
• Integrations. An inventory app that sits in isolation creates manual work. We checked for connections to accounting tools like Xero and QuickBooks, email platforms like Klaviyo, and fulfillment partners like ShipHero and 3PLs.
• Pricing and merchant reviews. We compared the real cost to unlock a useful feature set, not just the starting price, and weighted recent reviews to reflect each app’s current state, including reliability, support, and migration experience.

For a full breakdown of how we evaluate and rank Shopify apps, see our App Testing Methodology.

Based on these points, the three inventory apps we recommend most highly:

2. What to look for in a Shopify inventory management app

Not every inventory app is worth the monthly fee. Some only mirror what Shopify already shows you. Others bury the features you actually need behind their most expensive tier. These are the points to check before you commit.

• Demand forecasting. Look for SKU-level forecasting that factors in sales velocity and seasonality, not just a current stock count. This is the feature that tells you what to reorder before you run out.
• Automated reordering and purchase orders. The strongest apps calculate reorder points, suggest order quantities, and generate purchase orders in a few clicks. This replaces the manual spreadsheet math that breaks down as your catalog grows.
• Multichannel sync. If you sell on Amazon, Etsy, eBay, or TikTok Shop, confirm the app syncs those exact channels in real time. Shopify’s native tools do not sync marketplace inventory, which is how overselling happens.
• Multi-location and 3PL support. Check that the app tracks stock across every warehouse and fulfillment center, and lets you transfer stock between them.
• Bundle and kitting support. If you sell bundles or kits, the app should deduct inventory at the component level. Without this, a bundle can show as in stock even when one of its parts has sold out.
• Reporting. Useful reports include cost of goods sold (COGS), stock valuation, days of inventory remaining, and deadstock identification. These turn raw counts into purchasing decisions.
• Integrations. At a minimum, check for accounting connections (Xero, QuickBooks) and fulfillment connections (ShipHero, 3PLs). A loyalty or email tool like Klaviyo is worth checking if you trigger flows on stock status.
• Pricing structure. Apps charge by flat fee, by gross merchandise value (GMV), or by order volume. GMV-based pricing can climb faster than you expect, so map your real needs against each tier before you sign up.

Once you know which of these matter most for your store, the comparison below makes the shortlist easier.

3. The 5 best Shopify inventory management apps in 2026

Here is how the five apps compare before we get into the detail of each one.

Quick comparison table

In general, Sumtracker and Prediko are the safest picks for most merchants: Sumtracker for multichannel stores that need accurate sync without an enterprise system, and Prediko for DTC brands that want forecasting and purchasing in one place. Fabrikatör is the cleanest path off Stocky, especially if you want to capture demand on out-of-stock items. Inventory Planner and Cin7 Core sit at the higher end, suited to established teams and businesses that run manufacturing or wholesale.

Below, we break down each app’s features, pricing, and best-fit use case.

#1 Sumtracker – Best for multichannel sellers

🏅 Best for: Multichannel Shopify merchants needing fast and accurate inventory sync with strong replenishment workflows.

Sumtracker is an inventory management and replenishment platform built for Shopify brands selling across multiple channels and warehouses. 

It helps merchants maintain accurate stock levels in real time while simplifying purchase orders, forecasting, and inventory planning. 

Sumtracker is especially popular among growing Shopify brands that need a reliable alternative to spreadsheets or disconnected inventory tools.

Key features:

• Real-time inventory sync: Sync inventory instantly across Shopify, Amazon, Etsy, eBay, Walmart, and other connected channels.
• Multi-location inventory management: Track and manage stock across multiple warehouses, retail stores, and fulfillment centers.
• Low stock alerts & replenishment: Automated reorder recommendations based on sales trends and inventory levels.
• Purchase order management: Create, manage, and track supplier purchase orders from one dashboard.
• Demand forecasting: Forecast future inventory needs to reduce stockouts and overstocking.
• Bundle & kit inventory management: Sync component inventory automatically for bundles and kits.
• Inventory reporting & analytics: Centralized reports for stock valuation, sales trends, and inventory performance.
• Easy Shopify integration: Quick setup with native Shopify integration and minimal onboarding friction.

Pricing: Plans start at $59/month for inventory management, while the $99/month Replenish plan includes both inventory management and advanced forecasting/replenishment features.

Ideal merchant: Growing Shopify brands, multichannel sellers, wholesalers, and businesses managing inventory across multiple locations or storefronts that need accurate inventory syncing and better replenishment planning.

#2 Prediko – Best for AI demand forecasting and purchase orders

🏅 Best for: DTC brands that want AI demand forecasting and fast purchase order creation in one Shopify-native app.

Prediko is an AI-driven inventory management and planning app built specifically for Shopify brands. Its forecasting engine has been trained on more than 25 million SKUs across dozens of industries, which gives its demand predictions a depth that smaller tools struggle to match. The app syncs with Shopify in real time, then tells you what to order, how much, and when, turning forecasting and purchasing into a single workflow. It holds a 4.9-star rating on the Shopify App Store.

Key features:

• AI demand forecasting: SKU-level forecasts with up to 12-month horizons, factoring in sales velocity and seasonality.
• Smart purchase orders: Automated PO generation with suggested quantities, plus a buying table that shows what to order and when.
• Restocking alerts: Inventory health indicators and automated alerts to flag stockout and overstock risk early.
• Raw materials and BOM: Track raw materials and manage bills of materials if you produce your own goods.
• Reporting: More than 20 export-ready report templates and inventory health checks per SKU.
• Multi-location transfers: Balance stock across locations.
• PO financing: Request purchase order financing directly inside the app.

Pricing: A free plan is available, with paid plans starting from around $119 per month and a 14-day full-feature trial. Paid tiers include unlimited users, SKUs, and purchase order management.

Ideal merchant: DTC brands replacing Stocky or spreadsheets that want AI forecasting and procurement together in a Shopify-native app, especially those planning buying cycles ahead of peak seasons.

#3 Fabrikatör – Best direct Stocky replacement

🏅 Best for: Operators migrating off Stocky who also want to turn out-of-stock products into revenue.

Fabrikatör positions itself as a virtual head of operations, handling inventory planning, purchasing, and backorders in one app. It markets itself explicitly as a Stocky migration path, and it covers the purchase order automation that many forecasting apps skip. Its standout feature is a customer-facing backorder and pre-order engine: when a product sells out, customers can still order it, so demand is captured rather than lost. The app holds a 4.9-star rating on the Shopify App Store.

Key features:

• SKU-level forecasting: Demand forecasts from your sales history to flag what needs reordering.
• Automated purchase orders: One-click PO creation with supplier costs, lead times, and due dates attached.
• Backorders and pre-orders: Turn out-of-stock products into revenue with a customer-facing backorder engine.
• Multi-warehouse management: Track and transfer stock across locations.
• Bundle planning: Plan inventory at the component level for bundled products.
• Custom reports and dashboards: Build retail KPI dashboards and detailed reports.
• Integrations: Klaviyo, QuickBooks, Xero, ShipHero, and Katana.

Pricing: Free to install, with paid plans that scale with store revenue, typically from around $99 per month. A free trial is available, and annual billing carries a discount.

Ideal merchant: Shopify-native DTC and CPG brands moving off Stocky or spreadsheets, with enough SKUs and supplier variability that manual reorder planning is causing stockouts or deadstock, and who want to capture demand on sold-out items.

#4 Inventory Planner by Sage – Best for established operations teams

🏅 Best for: Larger stores with dedicated buying teams that need sophisticated forecasting models.

Inventory Planner by Sage is one of the longest-running forecasting and replenishment tools in the Shopify ecosystem. It offers advanced demand forecasting, replenishment recommendations, and more than 200 inventory metrics, which makes it powerful for teams that know how to use that depth. It integrates with Shopify, marketplaces like Amazon, and accounting systems like QuickBooks. It is worth noting that Sage has shifted the product toward larger merchants in recent years, and it carries a 4.4-star rating on the Shopify App Store, lower than the other apps on this list.

Key features:

• Advanced demand forecasting: Forecasting models that account for seasonality and sales trends.
• Replenishment recommendations: Guidance on when and how much to reorder.
• Multi-location and multichannel: Stock visibility across warehouses and sales channels.
• Supplier management: Track suppliers, costs, and lead times.
• Deep reporting: 200+ metrics and inventory segmentation for granular analysis.
• Integrations: Shopify, BigCommerce, Amazon, and accounting systems.

Pricing: Plans start around $119.99 per month for smaller setups, with custom quotes for the full platform based on warehouse count, SKU volume, and channel mix.

Ideal merchant: Established brands with dedicated operations or buying teams that can invest time to configure the platform and want sophisticated forecasting across multiple locations and channels.

#5 Cin7 Core – Best for manufacturing, B2B, and multi-warehouse

🏅 Best for: Established businesses needing full ERP-level inventory, manufacturing, and accounting.

Cin7 Core (formerly DEAR Systems) is a full inventory and operations platform rather than a lightweight Shopify app. It covers multichannel and multi-location inventory, purchase orders, light manufacturing with bills of materials, B2B wholesale, and deep accounting integration. If you produce your own products, run a wholesale arm, or need true ERP capability, Cin7 Core does what the simpler apps cannot. That power comes with enterprise pricing and a longer implementation. It holds a 4.2-star rating on G2.

Key features:

• Multichannel and multi-location: Manage orders and stock across Shopify, Amazon, eBay, and more, with unlimited inventory locations.
• Purchase order management: Full procurement workflows with supplier tracking.
• Light manufacturing: Bills of materials, assemblies, and production workflows.
• B2B and wholesale: Dedicated wholesale ordering and customer management.
• Accounting costing: FIFO and FEFO costing methods for accurate COGS, with Xero and QuickBooks integration.
• 700+ integrations: Broad connectivity across ecommerce, shipping, and POS platforms.

Pricing: Cin7 Core Standard starts at $349 per month (5 users, capped annual order volume), rising to $599 (Pro) and $999 (Advanced). Add-on charges for extra users and integrations can push the total higher.

Ideal merchant: Established brands that manufacture their own goods, run wholesale or B2B operations, or need a single platform tying inventory to accounting, with the budget and team to implement it.

Conclusion

Getting inventory wrong is expensive, and it gets more expensive as you grow. With Stocky shutting down on August 31, 2026, and Shopify’s native tools covering only the basics, a dedicated inventory app has become one of the more practical investments you can make this year.

Match the app to your main pain point. If you sell across marketplaces and overselling is your worry, start with Sumtracker. If you want AI forecasting and faster purchasing in one place, choose Prediko. If you are migrating off Stocky and want to capture demand on sold-out products, Fabrikatör is the cleanest path. For established teams that need deep forecasting or full ERP and manufacturing, Inventory Planner and Cin7 Core step in at the higher end.

Shortlist one or two, use the free plan or trial to test them against your real catalog, and migrate before the Stocky deadline rather than after it.

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