Real-time back-in-stock alerts

Restock alerts that fire the second it's back in stock

PS5, Switch 2, Pokemon cards, Labubu, sneakers — the things you actually want sell out in minutes. DiffHook watches the product page for you and pings your Discord, email, or phone the instant it's available again.

No browser extension to leave running. No restock Discord to babysit. Set it once — we do the watching, 24/7, for free.

27+
products & stores tracked
Seconds
from restock to alert
Free
to start, no card

Why restocks are so hard to catch

The drop is over before you even see it

Anyone who has chased a restock knows the feeling: the item you want is out of stock for days, then it quietly comes back in stock at some random hour and sells out again in minutes. Retailers don't announce drops in advance, and resellers run bots that buy the second a page changes — so by the time you refresh, it's gone.

A restock alert flips that around. Instead of you watching the page, the page watches itself: DiffHook checks the exact product listing around the clock and pings you the instant it's back in stock. You stop refreshing dead tabs and start finding out first — the same moment the bots do, for free.

How it works

From sold out to checkout in three steps

01

Paste the product link

Drop in the URL of anything you want to watch — a Target listing, a Pop Mart drop, a sneaker page. Add as many as you like.

02

We watch it 24/7

DiffHook checks the page on a tight interval and watches for the stock status, price, or Add to cart button to change.

03

Get the instant alert

The moment it's back, you're pinged on Discord, email, Telegram, or a webhook — usually within seconds.

Popular restock alerts

What people are watching right now

Tap any product to set up a free alert tuned to exactly how it restocks.

By store

"When does it restock?" — answered, and automated

No store publishes a real restock schedule. Pick a retailer to learn how its restocks work — then let DiffHook watch the exact page for you.

Why DiffHook

Built to beat the refresh button

Alerts in seconds, not minutes

The moment the page changes, you know. That's the same signal scalper bots watch — so you find out at the same time they do.

Runs in the cloud

No app open, no extension burning your battery, no computer that has to stay on. DiffHook watches even while you sleep.

Alert where you already are

Discord, email, Telegram, Slack, or your own webhook. Wire it into a Shortcut for a phone push if you want.

Watch the exact item

Not a whole category — the specific size, color, or variant you want. No noise, no false alarms.

FAQ

Restock alerts, explained

What is a restock alert?
A restock alert is an automatic notification that tells you the moment a sold-out product is available to buy again. Instead of refreshing a page or scrolling restock Discords, you let a tool watch the product page and ping you the instant stock changes.
How do I get notified when something is back in stock?
Paste the product page URL into DiffHook, pick where you want the alert — Discord, email, Telegram, or a webhook — and we watch the page around the clock. When it flips back to in stock, you get an instant notification.
Is DiffHook a free back-in-stock alert tool?
Yes. The free plan is built for personal restock watching, with checks frequent enough to beat a manual refresh. You only need a paid plan for very fast intervals or to watch many pages at once.
Does it work on any store?
If the product has a public URL, DiffHook can watch it — Target, Walmart, Best Buy, Pop Mart, Pokemon Center, sneaker sites, and thousands more. No store integration or browser extension required.

Stop refreshing. Start getting alerted.

Set up your first restock alert in under a minute — it's free.