Honest guide · 2026
Quick answer: Truly free inventory forecasting software mostly comes in three shapes: spreadsheet templates (genuinely free, genuinely manual), the native tools inside platforms you already pay for (Amazon’s restock suggestions, Shopify’s inventory reports — free-ish, but channel-blind), and free tiers or trials of paid tools (real software, time- or feature-boxed). There is no free tool that does per-SKU, multi-channel forecasting indefinitely — the data pipelines cost real money to run. The honest question isn’t “what’s free?” but “which free thing fits my stage, and when does free start costing more than paid?”
Nobody types “inventory forecasting software free” because they’re cheap. They type it because they’re not sure yet whether forecasting software is worth paying for — and that’s a completely rational place to be. So here’s the honest map of what free actually gets you in 2026, and where each option runs out.
Option 1: The spreadsheet template (free forever, manual forever)
A good template implements the real formulas — velocity, reorder point, safety stock, days of supply — and costs nothing. We publish one ourselves: a free Excel inventory forecasting template, built by someone who ran a warehouse on it. For a catalog under a few dozen SKUs on one channel, it’s genuinely enough.
Where it runs out: the template doesn’t pull its own data. Every week, someone exports sales, pastes, fixes broken references, and re-checks the math. The formula was never the hard part — the data refresh is — and that labor grows with every SKU and every channel until “free” quietly costs hours a week. We wrote the honest breakdown of that trade in what forecasting software actually costs.
Option 2: The native tools you already have
| Already paying for | What you get free | Where it stops |
|---|---|---|
| Amazon Seller Central | Restock suggestions and inventory dashboards for FBA | Amazon sees Amazon — its recommendations don’t know about your Shopify velocity or your 3PL stock, and its lead-time input is a number you type in, not something synced from your real POs |
| Shopify | Inventory reports in Admin (reporting depth varies by plan tier) | The mirror problem: Shopify sees Shopify. And with Stocky shutting down Aug 31, 2026, the built-in Admin tools are the path forward there |
| A 3PL portal | Stock levels, sometimes velocity | Warehouse-eye view — knows what’s on shelves, not what demand is coming |
These are real and worth using. Their shared blind spot is the multi-channel picture: each one forecasts its own island, and none of them owns your reorder decision end to end. Sellers on one channel can live here a long time; multi-channel sellers end up reconciling three dashboards in — you guessed it — a spreadsheet.
Free tools all share one price: they each see only their own island.
Option 3: Free tiers and trials of paid tools
This is where “free” means “real software, with a boundary.” Two shapes:
Free tiers
Some inventory apps offer permanently free plans boxed by order volume, SKU count, or features. Fine for validating a tiny catalog — but check which limit you’ll hit first and what the jump costs when you do; the free tier’s job is to graduate you.
Free trials (the honest version of free)
A full-featured trial answers the actual question — “is this worth paying for?” — with your own data. What to look for: long enough to see a real reorder cycle, no credit card demanded up front, and connection to all your channels so you’re evaluating the multi-channel view, not a demo dataset. That’s the design of our own: SKU Compass is free for 30 days, no card, connects Amazon and Shopify, and shows per-SKU, per-channel velocity, days of supply, and reorder points from your own history. Paid starts at $79/month after — and if the trial didn’t earn that, don’t pay it.
The honest caveat: we sell the paid thing, so discount accordingly — but the advice stands on its own: stay free as long as free is actually working. Under ~30 SKUs, single channel, weekly spreadsheet habit you genuinely keep? The template is enough, and paying would be premature. The switch signal isn’t catalog size — it’s the first stockout or overbuy caused by a stale spreadsheet, because one of those usually costs more than a year of software.
The free option that answers the real question
Thirty days, no credit card, your own data — per-SKU, per-channel velocity, days of supply, and reorder points across Amazon and Shopify. If it doesn’t pay for itself on the first reorder cycle, walk away.
Frequently asked questions
Is there completely free inventory forecasting software?
Indefinitely free, multi-channel, per-SKU software effectively doesn’t exist — the data pipelines cost real money to run. What’s genuinely free: spreadsheet templates, the native tools inside platforms you already pay for (Amazon restock suggestions, Shopify inventory reports), and time- or feature-boxed tiers and trials of paid tools.
Is a free Excel template enough for inventory forecasting?
For small single-channel catalogs with a disciplined weekly refresh habit — genuinely yes. The formulas fit in a spreadsheet fine; the manual data refresh is what scales badly. The switch signal is the first stockout or overbuy caused by a stale sheet.
Doesn’t Amazon already forecast my inventory for free?
Seller Central provides restock suggestions for FBA — useful, and worth reading. But Amazon only sees Amazon: no Shopify velocity, no 3PL stock, a lead-time field you fill in by hand rather than anything synced from your real POs — and its incentives are about keeping Amazon in stock, not optimizing your working capital across channels.
What should a good free trial of forecasting software include?
Full features (you’re evaluating the real product), enough length to watch an actual reorder cycle play out, no credit card up front, and connections to all your channels so the multi-channel view is what’s being tested. Anything less is a demo, not a trial.
When is it worth paying for inventory forecasting software?
When the free option causes its first real error — a stockout or an overbuy from stale data — or when the weekly manual refresh stops actually happening. Either usually costs more than a year of entry-level software; SKU Compass, for example, starts at $79/month.
What happened to Shopify’s Stocky app?
Stocky was removed from the Shopify App Store in February 2026 and shuts down fully on August 31, 2026; Shopify is directing merchants to the built-in Admin inventory tools. Merchants who relied on it are choosing between those native tools and third-party replacements.
Related reading:
Free Excel inventory forecasting template ·
What does forecasting software cost? ·
Stocky alternatives (2026) ·
Best inventory forecasting software (2026)