E-Commerce Monitoring That Protects Your Revenue
Track competitor pricing, stock availability, and product page changes across any e-commerce site. React to market shifts before your competitors do.
Start Monitoring Prices FreeThe Problem
Challenges e-commerce teams face without automated monitoring
Price Undercuts You Miss
A competitor drops their price by 15% overnight. By the time you notice, you have lost a week of sales.
Out-of-Stock Blind Spots
Your supplier runs out of a key SKU but you keep running ads, wasting budget on products you cannot fulfill.
Product Page Changes
Competitors add new features, change descriptions, or update images. You only find out from customer complaints.
How Teams Use WatchDiff
Competitor Price Tracking
Monitor product prices across Amazon, Shopify stores, and any custom e-commerce site. Get notified the instant a price changes.
Stock Level Monitoring
Track supplier and competitor stock status. Know immediately when items go out of stock or come back in.
MAP Compliance
Monitor your authorized resellers to ensure they respect your Minimum Advertised Price policy.
Product Listing Changes
Detect when competitors update product descriptions, add new features, or change promotional messaging.
Built for E-Commerce
Visual Diff Technology
See exactly what changed on any product page with pixel-perfect visual comparisons.
AI Noise Filtering
Ignore dynamic ads, rotating banners, and cookie popups. Only get alerted for real pricing and product changes.
Multi-Frequency Checks
Check prices every minute on critical products, or daily for broader market surveillance.
Frequently Asked Questions
Which e-commerce platforms does WatchDiff support?
WatchDiff works with any public website including Amazon, Shopify, WooCommerce, Magento, BigCommerce, and custom-built stores. If you can see it in a browser, WatchDiff can monitor it.
How often can I check competitor prices?
Depending on your plan, checks can run from once daily (Free plan) down to every minute (Business plan). Most e-commerce users find 15-minute intervals on the Starter plan ($9/mo) sufficient for competitive pricing.
Can I track specific elements like price or stock status?
Yes. WatchDiff lets you target specific CSS selectors on a page. Our AI also auto-detects price elements and product availability when you add a URL.
Does WatchDiff work on JavaScript-heavy sites?
Yes. WatchDiff uses a real browser engine to render pages, so it captures content from SPAs, lazy-loaded elements, and dynamically generated pricing.
Stop Losing Sales to Pricing Changes
Start monitoring competitor prices and stock levels in under 2 minutes.
Start Monitoring Prices Free