Track e-commerce product prices and get notified when they go on sale.
Users
3
−1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#309K
#248K among extensions
Version
1.0.2
updated 6 Jun 2026
Users
monthly, 7 months
Latest, 15 Oct 2026:3 usersMove the mouse over the chart for any month
Ratings count
monthly, 7 months
Latest, 15 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About sentinel.sale
Stop manually checking prices. Let Sentinel do it for you.
Sentinel tracks the prices of products you care about across any online store — every single day. When a price drops or a sale starts, you'll get an email notification so you can act fast.
How it works:
1. Browse to any product page and click the Sentinel icon to start tracking it.
2. Sentinel checks the price daily and builds a price history over time.
3. When the product goes on sale, you get notified by email.
Features:
- One-click tracking — Add any product to your watchlist directly from the product page.
- Price history — See how a product's price has changed over time with built-in sparkline charts.
- Daily monitoring — Every tracked product is checked automatically, every day.
- Sale alerts — Get an email the moment a tracked product goes on sale.
- Dashboard — Manage all your tracked products from the extension's side panel without leaving your current tab.
- Works everywhere — Supports products from ANY e-commerce site.
Free to use. Create an account at sentinel.sale to get started.