# www.pricewatcherapp.com > PriceWatcher is a cloud-based service at www.pricewatcherapp.com that tracks product prices, stock availability, and marketplace listing changes on any public product URL, then sends email alerts when prices drop, stock returns, or a listing changes. It is built for shoppers, resellers, and small teams who want automatic monitoring instead of manual page checks. PriceWatcher, product price tracking, price drop alerts, stock monitoring, back-in-stock alerts, listing change alerts, email alerts, marketplace listing monitoring, discount calculators ## Main sections - [Home](https://www.pricewatcherapp.com/): Product overview, pricing plans, and how PriceWatcher monitoring works. - [Home (Markdown)](https://www.pricewatcherapp.com/index.md): Markdown version of the homepage for AI agents. - [Tools](https://www.pricewatcherapp.com/tools): Free pricing, discount, margin, and marketplace fee calculators. - [Tools (Markdown)](https://www.pricewatcherapp.com/tools.md): Markdown index of all free calculators. - [Discount calculator](https://www.pricewatcherapp.com/tools/discount-calculator): Calculate final price and savings from a percent-off discount. - [Percentage off calculator](https://www.pricewatcherapp.com/tools/percentage-off-calculator): Convert a discount amount into a percentage off. - [Price drop calculator](https://www.pricewatcherapp.com/tools/price-drop-calculator): Measure absolute and percent change between two prices. - [Login](https://www.pricewatcherapp.com/login): Sign in with a magic link or Google to manage tracked URLs. ## Optional - [Privacy](https://www.pricewatcherapp.com/privacy): Privacy policy for PriceWatcher. - [Terms](https://www.pricewatcherapp.com/terms): Terms of service for PriceWatcher.