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Author: 
Cyrus Mahler
0 min read
March 19, 2026

Top 8 Best Inventory Replenishment Tool [2026]

If you're choosing inventory replenishment software, the best tool depends on your operations:

  • Best for Shopify brands: Prediko → AI forecasting + automated purchasing
  • Best for purchase order automation: Fabrikator → strong restock workflows
  • Best for warehouse operations: SKULabs → barcode + fulfillment systems
  • Best for multi-location forecasting: Assisty → handles complex inventory setups
  • Best for financial planning: Inventory Planner → advanced buying recommendations
  • Best for bundles/kits: Sumtracker → component-level inventory syncing
  • Best for D2C + B2B operations: Cin7 Core → inventory + cost tracking
  • Best for manufacturing: Katana → production + inventory in one system

Scaling your business doesn’t break your operations.

Poor inventory planning does.

As demand grows, small forecasting errors turn into stockouts, excess inventory, and cash flow problems. What worked when you were smaller starts to fall apart.

Most teams don’t notice it immediately. They just see missed sales, delayed restocks, and margins that stop improving.

Inventory replenishment software fixes this by helping you plan demand, automate purchasing, and stay ahead of stock issues before they happen.

In this guide, we’ll break down the best inventory replenishment tools and how to choose the right one for your business.

The 8 Best Inventory Replenishment Software Comparsion Of 2026

Tool Best For Key Features Starting Price
Prediko AI-powered forecasting + Shopify-native workflows
  • AI demand planning
  • Raw material management
  • Predictive buying table
  • Shopify-native integration
$49/month
Fabrikator Smart purchase orders + restock alerts
  • Demand forecasting
  • PO generation
  • Historical sales-based alerts
$99/month
SKULabs Multi-channel inventory & mobile fulfillment
  • Barcode-based workflows
  • Mobile app
  • Bulk PO creation
$299/month
Assisty AI-driven forecasting for multi-location setups
  • Demand prediction
  • Inter-location stock transfer
  • Bundle tracking
$99/month
Inventory Planner Automated buying recommendations
  • Seasonal trend forecasting
  • Vendor-specific POs
  • Buying suggestions
$249.99/month
Sumtracker Bundles + multi-platform sync
  • Bundle automation
  • Platform sync (Amazon, eBay, Etsy, etc.)
$49/month
Cin7 Core Integrated D2C & B2B inventory management
  • Cost tracking
  • Live updates
  • Full SCM integration
$349/month
Katana Inventory + manufacturing management
  • Manufacturing control (MRP)
  • Demand forecasting
  • Inventory sync
$179/month

Without a proper tool for demand forecasting and replenishment, companies can face several issues such as increased storage costs due to overstocking or missed sales opportunities due to stockouts.

It is crucial to choose the right software that helps with forecasting, management and visibility.

Here are 10 of the best inventory and order management solutions to make your Shopify business more predictable and profitable.

No. 1 👉 Prediko's AI Inventory Replenishment App

TL;DR: Perfect for fast-growing Shopify brands, Prediko combines AI-powered forecasting with native Shopify integration. It helps you predict demand, automate purchase orders, and optimize inventory—all in one place.

4.9 ⭐ (180+ Reviews on Shopify Store)

Prediko brings together real-time tracking, smart forecasting, and seamless integration with Shopify, making it the perfect solution for Shopify store owners looking to inventory replenishment software. Whether you’re running a small store or a large operation, Prediko helps you stay on top of inventory, improve cash flow, and boost overall efficiency.

Prediko’s deep integration with Shopify makes it seamless to manage inventory across all locations, sync stock levels, set up alerts, manage purchase orders, and much more. 

"Prediko’s advanced analytics and reporting tools empowered us to predict demand patterns accurately, optimizing stock replenishment and reducing stockouts. Collectively, these factors have led to enhanced efficiency, optimized inventory levels, improved customer satisfaction, and cost savings." - Alix Beckstrand, Kate Hewko

What Makes Prediko the Best Choice for Your Shopify Store?

Prediko’s features are designed with real-world inventory challenges in mind, setting it apart from other solutions on the market.

AI Demand Planning: Prediko’s AI algorithm helps you accurately forecast inventory needs and achieve business goals. By analyzing historical sales data, it identifies seasonal trends, growth patterns, and shifts in demand to provide precise purchasing recommendations.

You can also track actual sales against your planned revenue in real time, allowing you to adjust inventory strategies and prepare for upcoming sales events or product launches.

Insights & Analytics: Prediko goes beyond basic Shopify reports, offering deep insights into your product performance. You’ll get alerts on overdue or pending purchase orders, as well as visibility into SKUs at risk of stockouts or excess inventory.

With real-time reports, you can monitor the retail value of your inventory, track key metrics like stock health, and receive automated updates directly to your inbox—daily or weekly. Prediko’s smart nudges guide you to make timely purchases based on lead times, safety stock levels, and optimal stock cover units.

Predictive Buying Table: Prediko’s Buying Table gives you a comprehensive view of your inventory, showing key details like weekly sales history, days of cover, ideal reorder dates, and lead times. Each SKU comes with a health bar, providing you with a snapshot of potential stock issues before they become a problem.

You can also customize your inventory view at SKU, Category or Product-level using Prediko’s 100+ filters to tailor the data to your exact needs.

Raw Material Inventory Management: For stores that rely on raw materials or multi-step manufacturing processes, Prediko also offers robust material inventory management software. It helps you keep track of the materials needed to create finished goods, ensuring that production never stalls due to a lack of supplies.

Prediko provides all the tools you need to streamline your inventory replenishment process, enabling you to focus on scaling your business without worrying about stock issues.


Pros

  • Offer agentic-based replenishment 
  • Handles replenishment for complex variants and bundles across channels 
  • Responsive support team 
  • Raw material replenishment for manufacturing businesses

Cons

  • Integrations with some WMS/3PLs are still in development

Pricing 

Prediko's pricing is broadly divided into three umbrellas

  • Starter Plan: 49/month
  • Growth Plan: $199/month
  • Enterprise Plan: $349/month

The app’s pricing is based on revenue volume rather than feature distinction, with all plans offering the same core capabilities. The pricing plans scale with size and revenue of your business.

2. Fabrikator

TL;DR: Great for automating demand forecasts, managing backorders, and sending restock alerts. Fabrikator helps you stay proactive with purchasing decisions right from the dashboard.

Fabrikator is an inventory planner that can help with demand forecasting, stock replenishment, backorder management, and purchase order management for Shopify stores. 

Main Features of Shopify App

  • Demand forecasting: Generate demand forecasts using historical sales data
  • Purchase order creation: Create purchase orders and share them with suppliers from platform itself.
  • Smart stock alerts: Receive alerts when it’s time to restock, helping maintain optimal stock levels. 

Pros

  • Comes with backorder and pre-order automation
  • Automated purchase order creation

Cons

  • Pricing can compound for heavy backorder businesses
  • Some merchants report onboarding friction

Pricing 

The Seed plan costs $99/month, the Scale Up plan is $149/month, and the Growth plan is $199/month.

Related Read: Fabrikator vs Prediko

3. SKULabs

TL;DR: Built for serious multichannel sellers, SKULabs supports barcode-based fulfillment, real-time tracking, and bulk order processing ideal for warehouse-based operations.

is a multi-channel inventory, warehouse, and order management solution for businesses of all sizes. 

The platform offers mobile apps for both Android and iOS, allowing you to pick orders, print shipping labels, and track performance on the go so that you and your team are always in the loop.

Main Features of Shopify App

  • Order processing workflows: Set workflows for packaging, processing, and shipping. 
  • Barcode-based order fulfillment: Streamline order fulfillment and returns with barcode scanning.  
  • Bulk purchase order creation: Simplify reordering with bulk purchase orders and reordering suggestions.

Pros

  • Strong warehouse execution and shipping features, including barcode scanning 
  • Responsive support team and accessible documentation

Cons

  • Becomes expensive as you scale
  • Some users mention feature limitations and onboarding/enablement gaps

Pricing 

The Basic plan starts at $299/month, the Pro plan at $999/month, and the Enterprise plan at $1,999/month.

4. Assisty 

TL;DR: Leverages AI to forecast demand across multiple stores and locations. Best suited for businesses managing bundled products and complex inventory flows

Assisty is an AI inventory management and planning tool. It is ideal for stock replenishment across multi-store and multi-location businesses, including those that sell bundles. 

Main Features of Shopify App

  • Demand forecasting: Forecast inventory demand based on historical data, seasonal trends, events, etc
  • Multi-location Tracking: Manage inventory across multiple locations with inter-location transfers and location-specific insights

Pros

  • Knowledgeable and approachable support
  • Easy to use and set up

Cons

  • Pricing/entitlement changes can frustrate some users
  • Performance reliability concerns, like navigation lag, errors mentioned in some reviews

Pricing 

Assisty’s pricing is based on the Shopify plan you’re on. For Shopify Plus users, there are two options: the Pro plan at $99 per store/month and the Enterprise plan at $499 per store/month.

5. Inventory Planner 

TL;DR: Offers powerful forecasting and buying recommendations to prevent stockouts or overstocking. Automatically creates vendor-specific purchase orders and syncs with your sales data.

Inventory Planner is an app that automates demand forecasting, stock replenishment, and purchase order creation. Using the app, you can balance stock levels across multiple locations, reducing the risk of stockouts.

Main Features of Shopify App

  • Demand Forecasting: Forecast demand based on seasonality, trends, and product performance
  • Buying recommendations: Receive recommendations on what, when, and where to order
  • Automated purchase orders: Generate purchase orders with vendor minimums, cost prices, and other order specifications

Pros

  • Offers inventory turnover/cash-flow planning
  • Replenishment across locations 

Cons

  • Pricing is expensive for smaller budgets
  • Frictions such as data syncing delays and initial complexity in forecast configuration

Pricing 

The app is free to install, but plans start from $249.99/month and are based on your annual revenue.  

Related Read: Here is the list of the top alternatives to Inventory Planner app

6. Sumtracker

TL;DR: Tailor-made for businesses that sell bundles or kits. It updates inventory in real-time based on component SKUs, ensuring accurate stock levels across platforms like Shopify, Amazon, and Etsy.

Sumtracker’s inventory management app is designed for businesses that sell products in bundles and operate across multiple platforms. It automatically updates inventory for bundled products based on their individual item so that you always have accurate stock levels without the burden of manual adjustments. 

The platform’s intuitive UI makes it simple to manage inventory across multiple platforms and sales channels. Plus, its in-depth reports help you make faster business decisions. 

Main Features of Shopify App

  • Multi-Platform Sync: Sync inventory across platforms like Shopify, Amazon, Walmart, eBay, and Etsy
  • Bundle Inventory Automation: Automatically adjust inventory for bundles based on component stock levels

Pros

  • Offers multi-channel inventory sync 
  • Handles product bundles and components efficiently 

Cons

  • Users report slow inventory updates/integration issues
  • ​​Product limitations exist by design (e.g., it cannot create store listings, only update inventory)

Pricing

You get four different plans based on monthly order volume: $49/month for up to 200 orders, $99/month for up to 1,000 orders, $199/month for 5,000 orders, and $299/month for up to 10,000 orders. 

7. Cin7 Core

TL;DR: Ideal for hybrid D2C and B2B businesses. Cin7 Core brings advanced inventory and cost tracking together with seamless integrations across sales channels.

Cin7 makes inventory management simple and accessible to D2C and B2B Shopify brands of all sizes.

Main Features of Shopify App

  • With Cin7, get a complete picture of all the inventory production costs and inventory status.
  • Simplify inventory management with live updates.

Pros

  • Unifies inventory, orders, and channel data
  • Offers an integrated barcode scanning system

Cons

  • Users report missing features and dissatisfaction with the cancellation/support process
  • Reviews highlight integration friction (especially with Shopify) that can complicate operations

Pricing 

Cin7 Core plan starts from $349/month with a free trial available.

Related Read: Best Cin7 alternatives for Shopify brands


Also compare Cin7 to Inventory Planner

8. Katana 

TL;DR: Best for brands that need to manage both manufacturing and inventory. Katana gives real-time visibility into stock, production schedules, and order fulfillment from a single platform.

Lastly, we have Katana, an inventory management solution that helps you keep track of both your stock and manufacturing operations in real time. It consolidates sales, production, and accounting into one platform, eliminating inefficient tab switching.

You can easily manage incoming orders from all your sales channels, track product availability, and issue purchase orders based on combined inventory and reorder points. Plus, it allows you to send key financial data to accounting software like QuickBooks and Xero, keeping everything connected and organized. 

Main Features of ShopifyApp

  • Shop Floor Control: Control floor-level operation with Katana’s shop floor management 
  • Manufacturing management: Track production schedules, costs, and stock levels
  • Real-time inventory tracking: Monitor inventory across all locations and orders, including B2B & B2C
  • Demand forecasting: Forecast demand using historical data to plan stock levels effectively

Pros

  • Offers manufacturing-native replenishment 
  • Dedicated onboarding specialist 

Cons

  • Reviews frequently mention limited functionality or missing features 
  • Users point out integration issues with systems like QuickBooks and Shopify

Pricing 

The Starter plan costs $179/month, the Standard plan is $359/month, and the Professional plan is priced at $799/month, billed annually. 

When it comes to selecting the best inventory replenishment tool for your Shopify store, the key is to find a solution that aligns with your unique business needs, goals, and current setup.

Start by considering your store’s size and complexity. While tools like Prediko are ideal for larger, more complex stores, other solutions are well-suited for smaller businesses with simpler inventory needs.

Also, your platform should easily integrate with Klaviyo, QuickBooks and the likes. Real-time tracking and alert systems are also essential to keep you on top of stock levels and avoid costly stockouts.

We do observe that many e-commerce businesses won’t have large IT teams that can suppose onboarding and setup. Your platform of choice should be easy to set up or offer a white-glove approach in setup, migration and onboarding.

Choose the solution that fits seamlessly into your operations, and you'll set your store up for success.

How We Selected the Best Inventory Replenishment Software

To identify the best inventory replenishment software, we evaluated tools based on practical criteria that matter for day-to-day operations, which include 

1. Forecasting accuracy

Demand forecasting is the backbone of any replenishment system. 

The best tools use historical sales data, seasonality patterns, and demand signals to predict future inventory needs and maintain optimal stock levels. 

Accurate forecasting helps businesses avoid both stockouts and excess inventory.

2. Automation capabilities

We prioritized software that can automate core replenishment tasks such as calculating reorder points, generating purchase order suggestions, and monitoring stock levels continuously. Automated replenishment reduces manual work and helps teams respond faster to demand changes.

3. Shopify compatibility

We looked for tools that integrate directly with Shopify stores and Shopify POS. Native compatibility ensures real-time inventory syncing, smoother demand forecasting, and easier purchasing workflows for brands.

4. Integrations

Inventory replenishment tools rarely operate alone. 

We evaluated whether platforms connect with systems such as ERPs, WMS tools, accounting software, and third-party logistics providers. 

Strong integrations allow businesses to sync inventory data across their entire supply chain.

5. Pricing

Transparent and scalable pricing was another key factor. 

Some tools publish clear subscription tiers suitable for small and mid-size businesses, while others require enterprise quotes. 

We considered whether pricing aligns with the complexity and scale of the solution.

6. Merchant reviews

Finally, we examined merchant feedback, including reviews on the Shopify app store. Real customer reviews provide insight into reliability, ease of implementation, and whether the software delivers real value.

The above checklist helps ensure the software selected in this guide delivers not just features, but practical value for inventory planning and replenishment.

Top Features to Look for in an Inventory Replenishment Tools & Software

Before diving into specific tools, let’s break down the key features you need to look for when choosing inventory replenishment software. These features will ensure that you have full control over your stock levels and help you make smarter decisions.

1. Real-time Inventory Tracking

You need accurate, up-to-minute data to avoid stockouts or overstocking. Look for software that syncs across all your sales channels—online, in-store, and even multiple warehouses. This way, you can track sales and monitor inventory in real time. Plus, you can set automatic reorder thresholds.

Why it’s important: Real-time tracking helps you make informed decisions, reducing costly errors.

2. Demand Forecasting

Another critical feature is demand forecasting. The ability to predict future demand based on historical sales data, market trends, and seasonality is a game-changer. By having accurate forecasts, you can ensure that your stock levels align with expected sales, preventing overstocking during slow periods and stockouts during peak demand times.

Case Study: Read how Kate Hewko used Prediko to achieve an inventory turnover rate of 40% by predicting demand & replenishing inventory

Look for replenishment software that uses AI-powered algorithms to analyze past sales patterns and provide more accurate demand predictions. The more sophisticated the forecasting, the more control you’ll have over your supply chain.

3. Multi-Location and Multi-Channel Support

If you’re running a business that sells on multiple channels (like Amazon, eBay, or your own Shopify store) or operates across multiple locations (different warehouses, retail stores, etc.), it’s essential that your inventory replenishment software can manage stock across all these locations seamlessly.

Case Study: Read how We Are Jolies used Prediko's to replenish inventory and decrease stock outs by 60%

The right software lets you track stock levels at each warehouse or store, helping you avoid shortages and overstocking at any location.

4. Customizable Alerts and Notifications

The right replenishment software will notify you when stock levels are getting low, or when an item is approaching its reorder point. These alerts can help you avoid stockouts and ensure that you never miss a crucial reorder.

Additionally, many systems let you customize notifications to fit your business’s unique needs—whether it’s an alert for a specific product, location, or sales threshold.

5. Easy Integration with Your Existing Systems

A siloed inventory replenishment software (like tabs and tabs of spreadsheets) will cause you to deal with a lot of duplicates and order discrepancies. Your replenishment software will need to work seamlessly with other systems you already use, such as your point-of-sale (POS), accounting software, and eCommerce platforms.

Whether you’re using Shopify, WooCommerce, or any other platform, look for software with out-of-the-box integrations or easy API connections to ensure smooth data flow between systems.

Transparency note: Prediko is our tool, but we’ve reviewed these alternatives fairly based on their features, pricing, and ideal use cases for different eCommerce setups.

Frequently Asked Questions (FAQs)

What is inventory replenishment software?

Inventory replenishment software helps businesses track stock levels and automatically determine when and how much inventory to reorder.

How does inventory replenishment work?

It means analyzing sales data, current stock levels, and supplier lead times to calculate reorder points and generate purchase orders. This can be done automatically or manually.

What is the best inventory replenishment software for Shopify?

The best options are tools that integrate directly with Shopify, offer demand forecasting, and automate purchase order planning for growing SKU catalogs. One good example is Prediko.

Which inventory replenishment tools support multi-channel eCommerce businesses?

Replenishment tools like Prediko, Inventory Planner, and Cin7 integrate with Shopify, marketplaces, ERPs, and WMS platforms to manage inventory across multiple sales channels.

Which replenishment software works best for fast-moving inventory?

Prediko, offering real-time inventory tracking, demand forecasting, and automated reorder recommendations, works best for fast-moving SKUs.

How do AI tools improve inventory replenishment and demand forecasting?

AI tools analyze demand patterns, seasonality, and supply constraints in real-time to generate more accurate forecasts and optimize reorder timing and quantities.

Author Bio
Cyrus Mahler
COO @ Prediko
Cyrus Mahler, formerly an Executive Director at Goldman Sachs, joined Prediko as COO to spearhead the development of its financing platform and oversee company operations. He focuses on analyzing D2C balance sheets to ensure inventory operations are backed by healthy, sustainable cash flow.

What is Prediko? Shopify's Top-Rated Inventory Management App

  • AI-Driven Sales Forecasting & Demand Planning
  • Real-Time Stock Alerts & Buying Recommendations
  • Loved by 2000+ top Shopify merchants worldwide.
  • Plans start from $49/month
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75x ROI & 60% fewer stockouts for Shopify brands
  • Healf – Achieved 75x ROI with predictive planning
  • We Are Jolies – 60% fewer stockouts via AI forecasting
  • Cloudsharks – 35% fewer stockouts with better planning.
  • Kate Hewko – 40% higher ops efficiency after automation.
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