ProductSentinel watches your prices and inventory, catches costly mistakes the moment they happen, and quietly fixes them — before they cost you money. You don't use it every day. You're glad it's there the day something slips.
No credit card · Installs on your Shopify store in minutes
Caught a price drop on Baby Stroller X and restored it to $199.00. You're covered.
Price had been changed to $19.90 — below your $120.00 cost. 2 minutes ago.
Organic Cotton Tee — M dropped to 3 units, below your threshold of 5.
We emailed you so you can restock in time. 1 hour ago.
The quiet risk
A typo, a bulk edit, a sync gone wrong — and a product sells below cost or runs out of stock without anyone noticing. The competitor isn't another app. It's "I'll check it by hand later."
A below-cost sale rarely announces itself. It just quietly eats your margin, order after order.
Reviewing hundreds of variants in a spreadsheet is slow, tedious, and easy to get wrong.
By the time you spot it in a report, the orders have already shipped. Prevention beats forensics.
How it works
You stay in control. The robot just stands guard.
Install from the Shopify App Store. ProductSentinel syncs your products, variants, and costs in minutes — nothing to build.
Choose your low-stock thresholds and decide whether to just be alerted or have prices auto-restored. You set the boundaries.
From then on it watches every change in real time. When something slips, it acts — and tells you exactly what it protected.
What it does
Focused on one job: keeping the prices and stock you set safe.
Driven by Shopify webhooks. Every price and inventory change is checked the instant it happens, not on a schedule.
If a price drops below cost, ProductSentinel can restore the price you set — protecting the margin before orders go out.
Get a calm heads-up by email when a variant falls below the threshold you choose — in time to restock.
Reads your cost-per-item straight from Shopify and keeps it current, so "below cost" always means your real numbers.
Every protection is recorded with what changed, what we did, and when. Always know exactly what your guardian caught.
The whole app and your alerts work in English or Spanish — no setup, it follows your store.
The proof
No vague promises. Each month you get a clear summary of every price and stock incident the guardian caught — so the value is never a mystery.
Install ProductSentinel from the Shopify App Store and start protecting your prices and inventory in minutes.
No credit card · Free plan available
FAQ
It reads the cost-per-item you already keep in Shopify and keeps it in sync. So "below cost" always reflects your real numbers — no separate import needed.
Only if you turn that on. By default it alerts you. When auto-revert is enabled, it restores a price you previously set — it never invents new prices. The merchant sets the rules; the robot just enforces them.
No. It watches your store, not anyone else's. It's not a competitor monitor, an ERP, or a buyer-facing price-drop alert. It's a safety net for your own prices and stock.
Right now. ProductSentinel is live on the Shopify App Store — install it and you're protected in minutes.