Best Inventory Management Apps for Shopify (2026)

Full disclosure before anything else: we make StockCue, one of the apps named on this page. Every figure here about someone else's app was read on that app's own Shopify App Store listing or its own pricing page on 6 September 2026. Where a competitor is the better answer for a described store, this post says so.

A second disclosure, because it matters more than the first. A large share of the top-ranking "best Shopify inventory app" listicles are published by inventory-app vendors who rank their own product at or near the top. This page is written by a vendor too. The only defence we can offer is that every number here is dated and traceable to the listing it came from, and that in the forecasting section our own app is listed last, ordered by review count, because it does not have any.

The useful thing to sort out first is that "inventory management app" is not a product category. Four different jobs are sold under that phrase, and choosing the wrong job costs more than choosing the wrong app inside the right one. A store that installs a demand-planning platform because its counts disagree across two sales channels has bought something that cannot fix what is broken. If you are still working out what the platform does on its own, start with what Shopify inventory management actually covers.

Four categories, one label

1. Forecasting and planning

Answers "what should I buy, how much of it, and when". These read your sales history, project demand forward, and turn that projection into a reorder point or a suggested order quantity. Assisty's App Store listing describes forecasting demand, calculating reorder points and planning replenishment "across every location and SKU". Prediko's describes itself as "AI inventory forecasting, demand planning and purchase order management". Both read 6 September 2026. Most apps in this category also raise purchase orders, which is the main reason the categories blur on the App Store.

2. Purchasing and receiving

The supplier record, the purchase order document, and the part most merchants underestimate: receiving, including deliveries that turn up short, arrive in two shipments, or land at a different cost than the PO said. Shopify covers a lot of this natively and for free, which is the single most useful fact on this page and the reason the purchasing section below starts with the native tool rather than an app.

3. Low stock alerting

Emails you when a variant falls below a number you chose. There is no forecast behind it: the threshold is whatever you typed in, and it stays that number while the product's sales rate moves. That is a fair trade for a stable catalogue and a bad one for a seasonal product.

4. Multichannel stock sync

Keeps one quantity true across several channels, marketplaces, or duplicate listings of the same physical unit. This is a genuinely separate category and this post names no apps in it, because we did not read any sync app's listing directly while researching this piece. Naming one on the strength of somebody else's roundup is precisely the thing we complained about two paragraphs ago.

How to tell which you need

Work backwards from the last thing that actually went wrong, not from the feature list you would like to own. Most stores can name the failure in one sentence, and the sentence points at exactly one of the four categories.

If more than one branch describes you, take the one that cost the most money, not the one that annoys you most often. Receiving admin is irritating every week; a stockout on your best seller is expensive once.

The comparison

By category, not by app. The per-app tables, with prices and review counts, live in the three category posts linked below.

Forecasting and planning apps

Ordered by review count on the Shopify App Store, all read 6 September 2026, because that is the only comparable evidence available to us across every vendor. It is a measure of how many merchants have used a thing, not of how well it fits you.

• Assisty (4.8 stars, 356 reviews). The largest review base of any app checked for this post, plus a free plan and a cheapest paid tier of $19/mo. For a small-to-mid Shopify store it is the strongest direct competitor on both price and proof, and pretending otherwise would waste your time.
• Prediko (4.9 stars, 246 reviews, from $49/mo). Demand planning as well as forecasting: it plans against revenue targets, and every paid tier advertises unlimited SKUs. Right for a growing DTC brand, more machinery than a 150-SKU store will touch.
• Inventory Planner by Sage (4.5 stars, 151 reviews). Quote-based, priced on the volume of inventory you manage, with no published figure on either the listing or the vendor's pricing page. The most mature product in the set and the right answer for multi-warehouse, multi-channel operations with an ops person to run it; if that is not your store, the alternatives to Inventory Planner are the shorter list.
• Fabrikatör (4.8 stars, 112 reviews). $99/mo entry plus $0.75 per backorder above the 50 included, so the cost is not flat. If you genuinely sell on backorder or pre-order, that pricing shape exists because the product treats backorders as part of replenishment rather than an afterthought; if you don't, the alternatives to Fabrikatör are where the same jobs cost less.
• Sensible Inventory Forecasting (4.5 stars, 11 reviews). One plan at $29/mo, read 6 September 2026. The vendor is reported to offer unlimited products with no tiers, but we did not read that page directly, so treat it as secondhand; if it holds, a flat price is a real advantage for a large but low-value catalogue. Eleven reviews is a thin evidence base, and you should weigh it as one.
• StockCue (ours). No reviews and no rating when this post was published. Forecasting with seasonal adjustment runs on every plan including the free one, which covers 50 SKUs; the paid tiers are priced by SKU count rather than flat.

Full per-app detail, including what actually separates one forecast from another, is in the forecasting app comparison. If you arrived here from Stocky specifically, the Stocky alternatives comparison is scoped to that migration.

Purchase order and supplier apps

Start with the free tool you already have. Shopify's own documentation is unambiguous about what a native purchase order holds: "the products, quantities, costs, payment terms, and supplier details for an order". You can create and manage suppliers with contact details, payment terms and currencies, and once a PO is marked as ordered you can create an inventory transfer from it to track the shipment, receive the stock, and add cost adjustments. That is read directly from Shopify's purchase orders documentation on 6 September 2026.

Any post that tells you Shopify cannot raise a purchase order is out of date or selling something. What a dedicated app adds sits further along the workflow: receiving behaviour when a delivery is short or split, landed cost handling, supplier lead-time history, and a reorder suggestion attached to the PO so the quantity is not typed in from memory. Whether those are worth a monthly fee depends almost entirely on how many suppliers you buy from and how often deliveries arrive incomplete. The purchase order app comparison takes that apart properly, starting from the native tool.

Alerting and sync apps

Shopify's own Managing inventory page tells merchants that if they need direct notifications of low stock levels, they should install an inventory alert app, and separately points at Shopify Flow for the same job. Flow is free on the Basic, Grow, Advanced and Plus plans, so every merchant reading this already has it. Its triggers include product variant out of stock, back in stock, and inventory quantity changed. There is no trigger for "quantity fell below a number I chose", so a threshold has to be built as a condition on the quantity-changed trigger rather than picked from a menu.

If that setup effort is not worth it, the paid alert apps are genuinely cheap. Stockbot Low Stock Alert had 4.9 stars from 40 reviews with a free plan and a $9/mo alerts plan; LSA Low Stock Alert had 4.5 stars from 32 reviews starting at $5.99/mo. Both read 6 September 2026. At that price, an alert app is a rational purchase for a store that already knows its reorder quantities and just needs a nudge. The alert app comparison covers the free routes first.

On stock sync, we have nothing verified to offer. The category is real and the failure it fixes is real, but we did not read any sync app's listing for this post, so no name goes here.

When you don't need an app

A single-location store with roughly thirty SKUs and steady demand does not need any of the four. Shopify's inventory reports already include an ABC product grading and a days-of-inventory-remaining report, native purchase orders cover the buying paperwork, Flow covers the out-of-stock notification, and a spreadsheet covers the reorder quantities. That combination costs nothing and it works.

It stops working in a specific way, and it is worth knowing the shape of the failure before you meet it: a spreadsheet does not fire. Nothing happens when a SKU's sales rate doubles. You find out at the point of the stockout, six weeks after the number that would have warned you first appeared in the data. The question is not whether the spreadsheet is fine today. It is whether the misses have started to cost more than a subscription.

What's the best inventory management app for Shopify?

There isn't one, because four different product categories are sold under that phrase: demand forecasting and planning, purchase orders and receiving, low stock alerting, and multichannel stock sync. The right question is which of those four jobs is failing in your store, since an app built for one of them will not fix the others. Once you know the category, the shortlist inside it is short.

Does Shopify have built-in inventory management?

Yes, and more than most app marketing admits. Shopify natively tracks quantities across locations, keeps an adjustment history, handles transfers between locations, and creates purchase orders with supplier records, payment terms and line-item costs, with receiving handled on a linked transfer. It also ships inventory reports including an ABC product grading and days of inventory remaining. What it does not do natively is send low stock alerts, hold a reorder point, or forecast demand.

Do you need an app if you have fewer than 100 SKUs?

Often not. A small, stable catalogue can be run on Shopify's native reports, its native purchase orders, a free Shopify Flow automation for out-of-stock events, and a spreadsheet for reorder quantities. The case for an app gets stronger when demand is seasonal, when lead times are long enough that a mistake takes weeks to correct, or when you have stopped opening the spreadsheet.

What's the difference between an inventory app and a forecasting app?

An inventory app tracks and moves stock you already have: counts, locations, transfers, purchase orders, receiving. A forecasting app predicts stock you do not have yet, projecting demand forward from sales history to produce a reorder point or a suggested order quantity. Plenty of products do both, which is why the App Store listings read so similarly, but the two jobs fail in different ways and are worth separating before you compare prices.

Prices, ratings and review counts in this post were read on 6 September 2026 and will drift. Check the listing before you install anything, including ours.