What is Alertr: Inventory Management?

Alertr is a Shopify inventory app that tracks how fast your products actually sell and predicts stockouts days before they happen. Instead of relying on basic low-stock thresholds, it calculates sell rates per SKU, shows you exactly how many days of stock remain, and tells you how many units to reorder. No spreadsheets, no guesswork, no finding out you're out of stock from your customers.

Who it's for

• Shopify merchants who are tired of manually tracking inventory in spreadsheets and want automated, data-driven reorder alerts.
• Growing DTC brands that have outgrown Shopify's basic stock alerts but don't need the complexity or cost of enterprise demand planning tools.
• Ecommerce operators who've lost revenue to surprise stockouts and want a simple, focused tool that prevents them without adding busywork.

Key features

Real-time inventory dashboard

See every SKU's current stock, daily sell rate, and days remaining at a glance. The dashboard automatically flags items as low stock, needs reorder, or out of stock, so you always know where to focus.

Velocity-aware stockout alerts

Alertr sends you alerts when a product is about to run out — not just when it hits a static number. It factors in how fast each item sells and your supplier lead time, giving you days of warning instead of a last-minute scramble.

Reorder quantity recommendations

When you get a low stock alert, Alertr tells you exactly how many units to reorder based on current sell rate and lead time. No more guessing how much to buy or over-ordering out of fear.

Slack and email notifications

Alerts arrive in your inbox or Slack channel in real time. You get notified the moment a product hits low stock, goes out of stock, or needs a reorder — so you can act immediately without checking a dashboard.

What stands out

"Shopify's stock alerts don't account for how fast stuff actually sells. Alertr does."

Most inventory apps trigger alerts at fixed thresholds — 10 units left, 5 units left — regardless of whether you sell 2 units a day or 50. Alertr tracks sell velocity per SKU and calculates days of stock remaining, so you get alerts that actually reflect your real risk of stocking out. It's the difference between a static rule and a dynamic forecast, and it means you stop losing revenue to surprise stockouts.

Worth checking out if…

You run a Shopify store with more than a handful of SKUs and you've ever been caught off guard by a stockout. If you're currently juggling spreadsheets, manual counts, or basic threshold alerts that don't account for sell speed, Alertr gives you the same kind of inventory intelligence that enterprise tools provide — without the setup time or the $200+ monthly price tag.