Hey everyone,
I’m looking for suggestions for inventory forecasting tools that work with Shopify. Mainly something that helps predict demand, gives reorder suggestions and avoids overselling.
We also sell on other channels, so inventory sync across platforms would be a bonus (not sure if that’s possible in one tool).
Hi @VBUstore,
Our inventory forecasting app analyses historical sales, current stock, and incoming inventory to pinpoint exactly when and how much to reorder.
BR Inventory Planner - Shopify App Store
$9.99 USD per month after a 15-day free trial.
You can set store-wide lead times, safety stock days, minimum order quantity, and a sales window to analyse, then let our app predict your needs.
The reorder report can be printed or exported in Excel format, or you can send products and quantities directly to a Shopify Purchase Order. Use our Chrome plugin to auto-fill quantities in a Shopify Admin PO with one click.
We currently don’t support any external platforms, but if your external sales channel orders and inventory are handled by Shopify, our forecasting app will pick this up.
Email us if you have any questions or if you have any feature requests.
BR Data Solutions
You can try Sumtracker, it has all the features you are looking for. Great app using this since 5 months. Got recommended by someone her on the forum itself.
@mimi_17 Inventory sync to other channels as well?
You can check productpoll its a free app that let’s you create polls for products your thinking of selling. This allows you to stock only what you customers like 
For forecasting and demand planning with Shopify, tools like Inventory Planner, Stock&Buy, and Skubana are popular, they offer demand prediction, reorder suggestions, and help prevent overselling. If you sell on multiple channels, make sure to choose one with strong multi-channel sync so all your inventory stays updated across platforms.
@VBUstore Yes you can. Sumtracker lets you sync inventory between multiple shopify stores and other channels like ebay, etsy, amazon, etc.
For forecasting and reorder suggestions on Shopify there’s a few options. Prediko is popular, Orlio, Fabrikator. They all do demand prediction and tell you when/how much to reorder. Orlio is worth a look, it bases reorder points on actual sales velocity not just static thresholds.
For multi-channel sync that’s usually a separate tool though. Most forecasting apps focus on the Shopify side. You’d probably need something like Sellbrite or Linnworks alongside for the Amazon/eBay piece.
Hey! I represent Prediko. We were recently cited as one of the best forecasting apps on the Shopify App Store.
Hi, I am part of the Inventory Planner team over at Sage Retail. Forecasting is becoming a key tool in growing people’s businesses. More than happy to talk things through
A lot of the replies here focus on forecasting models (predict demand, suggest reorder qty, etc.), which is definitely useful.
But one thing worth calling out — forecasting alone doesn’t actually solve inventory problems unless it’s tightly connected to execution.
In practice, most issues come from the gap between:
forecast → purchase order → receiving → inventory update
For example:
• Forecast says “order 500 units”
• But vendor has MOQ / pack size constraints
• Partial shipments arrive over time
• Costs change at receiving
• Inventory gets out of sync across channels
If the tool only handles prediction but not what happens after, teams end up back in spreadsheets pretty quickly.
That’s also why multi-channel adds complexity — it’s not just syncing inventory, it’s syncing decisions (what to order, where to allocate, when to replenish).
A helpful way to evaluate tools is:
Does it stop at forecasting, or does it connect all the way through purchasing + receiving?
Curious what people here have found — are you using forecasting as a standalone tool, or tied into your PO / inventory workflow?
Worth splitting this into two different jobs, because few tools do both well:
(1) demand forecasting / reorder timing, and (2) multi-channel inventory sync.
For the forecasting side, what actually matters is velocity-based reorder points —
(avg daily sales × lead time) + safety stock — not a flat “reorder at 10.” That’s
what tells you what’s genuinely about to run out. Multi-channel sync (Shopify +
Amazon/Etsy) is a separate category, usually a separate tool.
Which is the bigger pain right now — knowing when to reorder, or keeping stock
in sync across channels?
Hi there 
If demand forecasting and purchasing recommendations are your main priorities, you may want to look at dedicated inventory planning platforms, as those tools are typically designed to analyze sales history and generate reorder suggestions.
For the inventory synchronization side, especially if you’re selling the same stock across multiple products or sales channels, keeping inventory updated in real time is just as important for preventing overselling.
Depending on your setup, you may find that you need two separate solutions: one for forecasting and another for inventory synchronization. For example, some merchants use forecasting software for demand planning and then use tools such as Easify Inventory Sync to keep inventory quantities aligned across related products and avoid stock discrepancies.
I’d be interested to hear which channels you’re selling on, as that can have a big impact on which inventory tools are the best fit.
Good timing to sort this out forecasting and sync are two distinct problems worth separating before picking a tool, because the best solution for each isn’t always the same product.
For demand forecasting and reorder suggestions:
Inventory Planner is the strongest dedicated option. Pulls your Shopify sales history, accounts for seasonality and lead times, and gives you specific reorder recommendations per SKU. Genuinely useful rather than just showing graphs.
Streamline is worth looking at as a lighter alternative if Inventory Planner feels like more than you need right now.
For multichannel inventory sync:
To answer your question - yes, it’s absolutely possible in one tool.
Linnworks covers forecasting, multichannel sync, and order management in one platform. More enterprise-level but comprehensive.
Skubana / Extensiv - similar positioning, strong for higher volume sellers across multiple channels.
We built Nventory specifically for the sync problem real-time inventory sync across Shopify and external marketplaces, unified order management, and AI automation. Just went permanently free so worth trying before committing to anything paid.
Following on from what Denis7 and kthoppae said above — that split between forecasting and execution/sync is the right way to think about this, and worth being upfront about: multi-channel inventory sync (Shopify + Amazon/Etsy) is really a separate job, and most dedicated forecasting tools, mine included, don’t try to do both well.
Full disclosure, I’m the developer behind Opti Forecast AI, so factor that in — but on the forecasting side specifically, here’s where it’s a bit different from the others mentioned in this thread:
Where it won’t help: it doesn’t do multi-channel inventory sync, so if that’s the bigger pain for you (per VBUstore’s original post), you’d still want to pair it with something like Easify or Sumtracker for that piece.
Free plan lets you test the forecasts against your own store data before paying anything, if you want to see whether the AI-adjustment piece is actually useful for how you work vs. a static reorder report.
The thing worth separating here — a few others touched on it — is that “forecasting” and “multi-channel sync” are really two different jobs, and most tools are strong at one, not both. So I’d decide which is your bigger bleed first.
If overselling across channels is the pain, that’s a sync problem — Sumtracker / Linnworks-type tools are built for that, and no forecasting app will fix it.
If the pain is “what do I reorder and when” on the Shopify side — demand trends, velocity-based reorder points instead of flat low-stock thresholds, and turning that into a PO — that’s the half I work on. Full disclosure, I build EZStock, an inventory + purchase-order app. It does reorder suggestions, PO generation and barcode/label workflows, but it’s Shopify-native — it is not a cross-channel sync layer, so if multi-channel is your #1 need, pair it with a dedicated sync tool rather than expecting one app to do both.
Happy to point you to the right side depending on which problem is actually costing you money.
I’d split this into two separate needs:
Most inventory apps are stronger at #1 than #2. Before picking one, I’d export Shopify products/inventory and look for SKUs with high on-hand value + weak recent sales + an old last-sold date. That gives you a baseline, and it also tells you which reorder rules the app needs to support.
Disclosure: I work on FlowSKU. We built a free no-signup, browser-only CSV check that does the quick cleanup pass: upload a Shopify export and it shows your 3 slowest SKUs + estimated monthly carrying cost in ~10 seconds: FlowSKU — AI Inventory Intelligence for 3PL Operations
It’s not a full forecasting app install; the instant check is just a fast way to see whether slow stock is already the bigger problem.
