Poor demand forecasting leads to both lost sales and tied-up capital
Many businesses still plan inventory in spreadsheets prone to formula errors
Manual recounts and reorder calculations take time that automation can remove
Which Inventory Planning Software Is Best?
Most "free" inventory planning tools and systems impose artificial limits that penalize growth. Here's how StockFlow's planning platform compares to legacy solutions like Inventory Planner, Zoho, and Excel.
| Feature | Excel | Inventory Planner | Zoho | StockFlow |
|---|---|---|---|---|
| Demand Forecasting | Manual Formulas | $449+/month | Paid Only | Included free |
| Reorder Suggestions | No | Yes | Basic | Included free |
| Multi-Location | Manual Sync | Paid Tiers | Paid Tiers | 1 free, paid plans add more |
| Item Limit (Free Tier) | N/A | No free tier | Unlimited (order-capped) | 25 products |
| Monthly Cost | $0 (No Features) | $449-899 | $0-299 | $0-$59 |
Is There Any Free Inventory Management Software?
Yes, but most "free" inventory planning tools are marketing funnels designed to extract subscription fees the moment your business scales. Legacy providers like Zoho Inventory and Sortly offer free tiers with crippling limitations that force upgrades during peak seasons.
Zoho Inventory Free Tier
Limited to 50 orders/month and 1 user. Exceeding this requires a $79/month upgrade.
Inventory Planner Pricing
Starts at $449/month for basic forecasting. Advanced features require $899+/month.
Excel Limitations
No automation, no forecasting, and prone to fatal formula errors that corrupt entire datasets.
StockFlow's Free Starter Plan
StockFlow's free Starter plan includes sales-velocity-based demand tracking and reorder timing for up to 25 products, 1 user, and 1 warehouse no credit card required. Paid plans add more items, users, locations, and integrations.
- Demand tracking included on the free plan
- No credit card required to start
- API & webhooks available on the Enterprise plan
Is Zoho Inventory Free?
Zoho Inventory offers a free plan, but it's heavily restricted. The free tier caps you at 50 orders per month, 20 purchase orders, and a single user. For growing businesses, these limits are reached within weeks, forcing an immediate upgrade to paid plans starting at $79/month.
Additionally, Zoho's free plan excludes critical features like advanced forecasting and multi-warehouse management, forcing you into higher-cost tiers ($299/month+) for functionality that StockFlow includes starting on its $9/month Professional plan.
The free-tier ceiling problem
Most free inventory plans, including Zoho's and StockFlow's, are sized for evaluating the product or running a single small location rather than a growing multi-location operation. StockFlow's free Starter plan covers 25 products, 1 user, and 1 warehouse; its paid tiers start at $9/month, well below Zoho's $79/month jump or Inventory Planner's $449/month entry point.
For a full feature-by-feature breakdown of Zoho Inventory's free and paid tiers against StockFlow, see the StockFlow vs. Zoho Inventory comparison.
Does Microsoft Office Have an Inventory Management System?
Microsoft Office (specifically Excel) does not include native inventory management functionality. While Excel can be configured with manual formulas for basic inventory tracking, it lacks the automation, forecasting algorithms, and data integrity safeguards required for professional inventory planning.
No Real-Time Sync
Excel files create version control nightmares when multiple users edit simultaneously.
Human Error Risk
A single misplaced formula can corrupt months of inventory data with no audit trail.
Zero Forecasting Capability
Demand planning requires manual statistical analysis, a weeks-long process prone to error.
Why Businesses Migrate from Excel
Many businesses still track inventory in spreadsheets, which works fine for a small, stable catalog but becomes a maintenance liability as SKU count and the number of people editing the file grow: there's no automated forecasting, no real-time sync, and no audit trail when something changes.
Migrate to StockFlowFor barcode-driven counting workflows, see our free inventory software with barcode scanning guide. For makers and kitters, see our free BOM software roundup.
Inventory Forecasting Models Explained
Professional inventory planning software uses sophisticated algorithms to predict demand. StockFlow implements all major forecasting models, automatically selecting the best method for each SKU.
Time Series Analysis
Uses historical patterns to predict future demand with seasonal adjustments.
Moving Average
Smooths out short-term fluctuations to identify long-term trends.
ABC Analysis
Prioritizes high-value items (A) over low-value items (C) for focused planning.
Safety Stock Calculation
Maintains buffer inventory to prevent stockouts during demand spikes.
StockFlow's Demand Forecasting
StockFlow tracks sales velocity over 7, 30, and 90-day windows for each product, detects whether demand is trending up, down, or stable, and surfaces a suggested restock date and days-until-reorder estimate based on your current stock and reorder point.
This removes the manual work of recalculating reorder timing by hand every time stock moves, whether you call it an inventory forecast, a demand projection, or just your restock plans for the week.
Best Inventory Planning Methods for 2026
Effective inventory planning requires implementing proven methodologies that balance holding costs against stockout risk. Modern businesses combine multiple approaches to optimize working capital while maintaining service levels. Here are the industry-standard methods:
ABC Analysis
Categorizes inventory into three tiers based on value and turnover. "A" items (top 20% by revenue) receive tight control and frequent reordering. "C" items (bottom 50%) are managed with bulk orders and looser oversight.
Economic Order Quantity (EOQ)
Calculates optimal order size by minimizing combined ordering and holding costs. Assumes constant demand and fixed lead times, making it ideal for stable, predictable products. See the free EOQ calculator.
Just-In-Time (JIT)
Minimizes holding costs by ordering inventory to arrive precisely when needed. Requires robust supplier relationships and accurate lead time data. High risk in volatile supply chains.
Safety Stock Calculation
Maintains buffer inventory to absorb demand variability and supplier delays. The formula considers lead time, demand volatility, and desired service level (typically 95-99%). See the reorder point and safety stock glossary pages for the formulas, or read how to reduce carrying costs and reduce stockouts in practice.
How StockFlow supports these methods
StockFlow tracks per-product sales velocity and trend direction, and surfaces reorder points and suggested restock timing from that data, giving you the inputs these methods need without manually recalculating them in a spreadsheet each time stock moves.
Inventory Planner by Sage vs. StockFlow
Inventory Planner
ANNUAL COST
$5,388 - $10,788/year
StockFlow
ANNUAL COST
$0-$708/year
The Real Cost of Poor Inventory Planning
of annual revenue lost to stockouts
Source: IHL Group retail research
of revenue lost to overstock carrying costs
Storage, insurance, depreciation, markdowns
combined inventory planning failure rate
For a $500K/year business: $55-70K recoverable
Inventory Planning for Shopify Stores
Shopify merchants face a specific version of the inventory planning problem: demand spikes around campaigns and seasonal events, suppliers have 4-8 week lead times, and overselling a variant on Shopify is a customer experience failure. Dedicated Shopify inventory planning tools like Prediko and Inventory Planner address this, but start at $99-$449/month.
StockFlow's ecommerce integrations (CSV today, native Shopify sync on the roadmap) plus demand-based reorder points give Shopify merchants planning logic without an enterprise price tag. Set reorder points per SKU, get alerts before you hit zero, and push purchase orders to suppliers directly from StockFlow.
Real-time Shopify sync
Stock levels update with every Shopify sale, no manual import required.
Demand-based reorder points
StockFlow calculates reorder timing from your actual sales velocity, not guesswork.
Multi-channel support
Sell on Shopify, Amazon, and in-store; StockFlow consolidates demand across all channels.
Trusted by small businesses
What our customers say
“Super Kind! Quick replies from their support and very easy fixes, changed the dashboard a bit and customized it. Also gave me 450 items extra on the free plan just for me. Highly recommend and again great service!”
“Best customer service! Stockflow's customer support is fast and extremely helpful. They assisted me with customization of the software to improve my experience as a user.”