Forecasting is the difference between ordering the right amount and guessing. Get it right and you free up cash, avoid stockouts on your bestsellers, and stop discounting dead stock. Get it wrong in either direction and it costs you — overstock ties up capital, understock hands sales to a competitor. This is the operator shortlist for demand planning on Shopify, ranked on reputation, fit, and first-hand feedback from the app store research network where we have it.
A note on the data: forecasting is a specialized back-office category, so our review sample is small. We lead with each tool's reputation and mechanics and add operator quotes where we have them, flagged as such. Treat the operator voices as directional signal, not statistics — and treat every forecast the same way.
Forecasting apps at a glance
# | App | Best for | ASR signal |
|---|---|---|---|
1 | Inventory Planner | Dedicated demand forecasting & POs | "Helps me forecast how much to order" |
2 | Stocky | Shopify POS brands, built-in planning | Low-stock reports & PO suggestions |
3 | Cin7 Core | Forecasting inside a broader ops system | "100x better than NetSuite for 1/10 the price" |
4 | Genie | Simple planning, forecasting maturing | PO info in one place |
5 | Bee Low Stock Alert & Forecast | Lightweight stockout alerts | Free tier for run-out notifications |
Most brands need exactly one forecasting tool, matched to how complex their purchasing actually is. Don't over-buy: a lightweight alert app may be all a small catalog needs, while a multi-channel operation wants real forecasting inside a system of record.
1. Inventory Planner — dedicated demand forecasting
The category's best-known dedicated forecaster. It projects demand from sales history, recommends reorder quantities, and turns those into purchase orders — the tool most brands graduate to when spreadsheet planning breaks down. The honest limitation, named by operators, is the one every forecaster shares: models struggle when history is short or demand spikes.
What operators love (from our network): forecasting order quantities, creating POs, and receiving/updating inventory in one flow; a real step up from spreadsheet planning. Common concerns: forecasts can overshoot after an initial spike on a new product, suggesting you keep reordering at the spike rate.
"Having a tool that helps me forecast how much inventory I need to order is very valuable — planning orders in software instead of spreadsheets." — Owner, verified ASR review
Browse app reviews → · Best inventory apps
2. Stocky — for Shopify POS brands
Free with Shopify POS Pro, Stocky includes demand suggestions and reorder-point planning alongside its PO and reporting tools. For a brand already in the Shopify ecosystem that wants basic forecasting without another subscription, it's the natural first move before a dedicated tool.
What operators love (from our network): the low-stock report and the ability to generate POs from your own settings against Shopify sales data. Common concerns: navigation is clunky in places; forecasting depth is basic versus a dedicated planner.
"It processes large sets of Shopify inventory and sales data into useful, easy-to-follow reports — and creates POs based on your settings." — Owner, verified ASR review
3. Cin7 Core — forecasting inside a broader system
If you want forecasting as part of a full inventory-and-operations platform rather than a standalone app, Cin7 Core builds demand planning into a system that also runs purchasing, wholesale, and multi-channel stock. Best for brands whose complexity has outgrown point tools.
What operators love (from our network): far cheaper and more manageable than legacy enterprise systems, with self-serve debugging. Common concerns: can slow at month-end; more system than a brand needs if forecasting is the only goal.
"Cin7 Core is 100x better than NetSuite for 1/10 of the price." — Owner, verified ASR review
Browse app reviews → · ERP & operations apps
4. Genie — simple planning, forecasting maturing
A newer, simpler tool for brands that want clean PO management now and are betting on its roadmap. Operators like the streamlined purchasing today and are explicitly waiting on deeper demand-forecasting features — so weigh it on where it's going as much as where it is.
What operators love (from our network): all PO information in one place instead of scattered across spreadsheets. Common concerns: demand-forecasting and accounting (QBO) connections are still on the roadmap.
"The ability to have all the important information for a PO in one place instead of tracking across multiple spreadsheets." — Operations, verified ASR review
5. Bee Low Stock Alert & Forecast — lightweight alerts
The minimal option: a free tier that simply tells you when products are running low. Not a full forecaster, but for a small catalog where the only real need is "don't let bestsellers hit zero," it does the job without cost.
What operators love (from our network): the free version's run-out notifications are genuinely useful. Common concerns: the free tier is limited, and operators weren't always convinced the paid forecasting features justified the upgrade.
"I use the free version to get notified when products run out of stock." — Owner, verified ASR review
How to choose a forecasting tool
Match the tool to the complexity of your purchasing, not to feature lists. On Shopify POS with a simple catalog? Stocky is free and enough to start. Purchasing decisions genuinely painful and spreadsheet-bound? Inventory Planner is the dedicated answer. Multi-channel or manufacturing complexity? Forecasting belongs inside Cin7 Core. Small catalog that just can't afford a stockout on bestsellers? A free alert tool like Bee covers it.
One honest caveat that applies to every tool here: a forecast is a projection, not a promise. All of them wobble on new products, seasonal spikes, and viral demand. Use them to replace guesswork, not judgment — and sanity-check the number before you commit the cash.
Browse first-hand operator reviews across every category in our Shopify App Reviews hub.
Run a forecasting or planning tool? App teams pay to hear why. Planning tools are exactly where app teams struggle to get honest merchant feedback. Shopify app teams pay operators $50 to $500 per call to understand what made you pick, keep, or drop one. Turn your stack decisions into paid conversations. Get paid to share your operator view →
App reputations and mechanics reflect public Shopify App Store listings and vendor documentation as of July 2026. Operator quotes are from first-hand reviews collected inside the app store research network; forecasting samples are small and are offered as directional signal, not statistics. Confirm current pricing and features on the Shopify App Store before purchasing.
Author
Jonathan Kennedy
Jonathan Kennedy is the founder of app store research and shopexperts, platforms that connect operators, founders, and experts across the Shopify ecosystem to drive better decisions, product development, and growth.
