Inventory replenishment software: automatic stock replenishment, reorder points and purchase orders
A low-stock alert tells you a SKU is in trouble. Replenishment software tells you what to do about it: the reorder point, the quantity, the supplier, and the date the order has to leave. Storekeeper recalculates all four for every SKU, every day, from your own sales history and lead times.
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A live preview of Storekeeper's forecasting engine on fictional sample dataon the rows you pasted. The full product connects to your POS and store and runs this continuously.
Inventory replenishment software decides when to reorder each SKU and how much, using the SKU's sales rate, its supplier's lead time and a safety stock buffer, instead of a fixed minimum you type in once and forget. Good replenishment tools then turn those quantities into purchase orders grouped by supplier. Storekeeper does this from $49 a month for a single location, and auto-drafts the purchase orders on the $149 Growth plan. Enterprise replenishment suites do the same job for hundreds of locations at quoted prices that usually start in the thousands per month.
From sales rate to a purchase order in four steps
The same chain runs in the demo above on sample data. Every number can be traced back to a sale, a lead time or a buffer you can see.
Forecast the rate
Each SKU gets a daily demand rate from its own sales history, adjusted for trend and seasonality. A SKU that sold 40 a week in July and 60 in August forecasts closer to 60. The method is on our demand forecasting software page.
Set the reorder point
Reorder point = demand during the supplier's lead time + safety stock. A 14-day lead time on a SKU selling 8 a day means 112 units of lead-time demand, plus a buffer sized to how erratic that SKU is. When the rate changes, the point moves with it.
Size the order
The order quantity covers the planning horizon you choose (30, 60 or 90 days) after the stock lands, rounded to the supplier's case pack or minimum order. Stock already on order is counted so you never double up.
Draft the purchase order
Every SKU that crosses its reorder point rolls into a draft purchase order for its supplier. You review the lines, adjust if you know something the data does not, and send. Nothing goes to a vendor without your approval.
Replenishment methods compared: min/max, periodic review and forecast-driven reorder points
Most inventory systems support the first two. The third is what replenishment software adds, and it is the one that survives a change in demand.
| Method | How it decides | Where it breaks | Best for |
|---|---|---|---|
| Static min/max | You type a minimum and a maximum per SKU; the system alerts at the minimum | The numbers were right the day you set them. Demand moves, the thresholds do not, and 2,000 SKUs are never revisited | Slow, stable catalogs under a few hundred SKUs |
| Periodic review | Every week or month you top each SKU up to a target level | A SKU that spikes the day after review runs out before the next one; fast movers need daily attention, not monthly | Consolidated supplier orders with fixed delivery days |
| Calculated reorder point | Reorder point = lead-time demand + safety stock, recomputed from current sales rate | Only as good as the demand rate feeding it; a flat average misses trend and seasonality | Any catalog where sales rates change through the year |
| Forecast-driven replenishment (Storekeeper) | Per-SKU forecast with trend and seasonality feeds the reorder point, the order quantity and a draft PO by supplier | Needs sales history: six months to start, twelve to see seasonal peaks. Brand-new SKUs are forecast from a similar product until they have their own data | Retailers, brands and distributors with 200 to 20,000 SKUs and one buyer who cannot review each one by hand |
Six replenishment jobs Storekeeper takes off the buyer's desk
Each one is a Monday task a buyer does by hand today, usually in a spreadsheet exported from the inventory system.
Reorder points that move with demand
No min/max fields to maintain. The reorder point for each SKU is recalculated daily from its forecast rate, its supplier's lead time and its own volatility, so a SKU that doubled its sales gets a doubled reorder point without anyone noticing it needed one.
Quantities, not just alerts
Every reorder verdict carries a quantity that covers your planning horizon after the stock arrives, net of what is already on order. The alert and the answer arrive together.
Draft purchase orders by supplier
On Growth, reorder lines are grouped into one draft PO per supplier with the supplier's lead time and your cost already filled in. Approve, send, receive. Starter shows the same quantities for you to place the order yourself.
Expedite warnings with a date
When days of cover are shorter than the lead time, a normal order will land too late. Those SKUs are flagged separately with an expedite quantity so the air-freight or alternate-supplier call happens this week.
Replenishment across locations
For retail replenishment across stores and a warehouse, Growth covers five locations and suggests transfers before purchases: if the downtown store is short and the warehouse is long, move stock first and buy second.
Dead stock stays out of the order
Replenishment software that only looks at stock levels happily reorders a SKU that stopped selling. Storekeeper flags dead and slowing SKUs with the dollars frozen in them, and keeps them off the draft PO until you say otherwise.
Retail replenishment, FBA replenishment, distributors and QuickBooks shops
The common thread is one person responsible for reorders across more SKUs than they can review by hand.
Retailers with two to five stores
Retail replenishment means deciding store by store, not just in total. A per-location forecast catches the store where the SKU sells twice as fast. See retail inventory software for the multi-store view, and Stocky replacement if Shopify POS just took your suggested orders away.
Amazon FBA sellers
FBA replenishment has two lead times: supplier to you, then you to the fulfillment center, and storage fees punish over-sending. Storekeeper forecasts per ASIN and sizes the inbound shipment to cover the horizon without paying for months of storage. More on our Amazon FBA inventory management page.
Wholesale distributors with long lead times
A 60-day ocean lead time means today's reorder decision is really a forecast of demand in March. That is exactly the case where a fixed minimum fails and a forecast-driven reorder point earns its keep. Our wholesale inventory software page covers container-sized orders and supplier minimums.
QuickBooks users who outgrew reorder points
QuickBooks Online and Enterprise both work from a reorder point you type per item; Enterprise can auto-create a PO at that fixed level, but neither calculates the level from sales velocity or lead time. Storekeeper does the calculation and hands the PO back. See QuickBooks inventory forecasting.
Best inventory replenishment software compared on price and what it decides
Prices from each vendor's own pricing page. Where a vendor only quotes, we say so. The middle column is the one that matters: does the tool alert, or does it decide.
| Tool | Published price | Replenishment logic | Best for |
|---|---|---|---|
| Storekeeper | $49/mo Starter, $149/mo Growth ($39 and $119 billed yearly) | Forecast-driven reorder points and quantities on every plan; auto-drafted POs by supplier and transfers on Growth | 200 to 20,000 SKUs, one buyer, one to five locations |
| Zoho Inventory | Standard $29/mo billed annually ($39 monthly) | Reorder point you set per item; notification when stock reaches it; PO created by you | Small catalogs where a static minimum is enough |
| QuickBooks Enterprise | Advanced Inventory on Platinum and Diamond tiers | Auto-created PO when stock hits a manual reorder point; no forecast | Desktop QuickBooks shops that want the PO step automated |
| Katana | Core from $299/mo plus order and location usage | Planning and forecasting with AI replenishment suggestions included on every plan | Makers who also need production scheduling and BOMs |
| Sumtracker | Replenish $119/mo ($100 annual) | 12-month forecasting and POs on the Replenish plan; Manage plan has neither | Multichannel sellers who mainly need stock sync |
| Inventory Planner (Sage) | Quote only, based on inventory volume | Forecasting and replenishment recommendations, unlimited users | Larger catalogs on an existing inventory system |
| Netstock, EazyStock, ToolsGroup | Quote only | Enterprise replenishment planning across many warehouses, tied to an ERP | Distributors and manufacturers on NetSuite, SAP or Dynamics with a planning team |
The dividing line is not price, it is whether the reorder point is typed or calculated. If your team is still maintaining minimums by hand, any of the forecast-driven rows will pay for itself on the first stockout it prevents. If you mostly need counts and control, our inventory control software page is the better starting point. Plan details are on the pricing page.
Inventory replenishment software questions, answered
What is inventory replenishment software?
How does automatic replenishment work?
What is the best inventory replenishment software?
Does QuickBooks have a reorder point?
How much does inventory replenishment software cost?
How much sales history does forecast-driven replenishment need?
More ways teams use Storekeeper
- Inventory management software for small business Stock tracking, reorder alerts and dead-stock flags for a small team.
- Best inventory management software An honest 2026 comparison: Cin7, Fishbowl, Zoho, Katana, inFlow, Sortly.
- QuickBooks inventory management Where QuickBooks inventory tracking stops, and what to run alongside it.
- QuickBooks inventory forecasting software Per-SKU demand forecasts, reorder points and draft POs from your QuickBooks sales history.
- Retail inventory software One stock picture across every store, with transfer suggestions.
- Ecommerce inventory management Prevent oversell and sync stock across Shopify, Amazon and marketplaces.
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