Monitor Price Changes & Stock Status
Monitor competitor price changes and supplier stock status. Get real-time alerts before you lose sales.
The problem
A competitor changed their price overnight, and you lost $5K in sales before realizing it.
How WatchDiff solves it
WatchDiff monitors competitor pricing and supplier stock 24/7. Get alerted the moment an element changes so you can adjust your strategy immediately.
Everything you need to stay ahead
Price Tracking
Automatically track competitor pricing across any e-commerce site.
Stock Availability
Get instant alerts when supplier products come back in stock.
Visual Verification
See a side-by-side visual comparison of exactly what changed.
How it works
Add competitor URLs
Paste the product pages you want to track.
Set alert frequency
Choose from daily down to 1-minute checks based on your plan.
Get notified
Receive email or webhook alerts instantly when prices change.
Frequently asked
Who uses this?
Over 40K+ users already rely on visual change tracking for price monitoring.
Which sites are supported?
Any public e-commerce website. Shopify, Amazon, custom stores, etc.