Commerce Index Shopper Guide
Shop with better signals, not just better prices. Get price comparisons and live social proof across 25+ retailers.
Download & Install
Commerce Index Shopper
Free Chrome extension for smarter shopping
Installation Steps
Visit Chrome Web Store
Search “Commerce Index Shopper” or use the button above
Click “Add to Chrome”
Confirm by clicking “Add extension” in the popup
Pin the Extension
Click the puzzle icon and pin CI Shopper for easy access
Features
Smart Price Comparison
Automatically see prices from other retailers when you view a product. Find the best deal without opening multiple tabs.
Live Social Proof
For integrated brands, see real-time views and purchases. Know if a product is trending before you buy.
Savings Alerts
Get notified when you are about to overpay or when a better price is available elsewhere.
Privacy-First
No personal tracking. We only look at product pages, never your personal data or browsing history.
Supported Retailers
CI Shopper works on 25+ major retail sites:
More retailers added regularly. Request a retailer at support@commerceindex.com
How to Use
Shop as Usual
Visit any supported retailer and browse products normally
View Price Comparisons
CI Shopper automatically shows a widget with prices from other retailers
Check Social Proof
For integrated brands, see how many people are viewing and buying
Click to Save
Click any price to go directly to that retailer and complete your purchase
Extension Settings
Access settings by clicking the CI Shopper icon in your toolbar, then the gear icon.
Privacy & Security
What We Collect
- Product URLs on supported retailers
- Anonymous session ID for stats
- Your settings preferences (locally)
What We Do NOT Collect
- ✕Personal information
- ✕Payment information
- ✕Browsing history outside product pages
- ✕Login credentials
FAQ
Is CI Shopper free?
Yes, CI Shopper is completely free. No account or registration required.
How accurate are the prices?
Prices are updated multiple times daily. Always verify on the retailer site before purchasing.
Does it work on mobile?
Chrome extensions do not work on mobile browsers. We are exploring a mobile app.
Widget not showing?
Try refreshing the page. Make sure you are on a product page (not search results). Check that the extension is enabled at chrome://extensions.
Need Help?
Contact us at support@commerceindex.com or visit our support page.