Let Me Know When
Monitor any website for free with Let Me Know When. Get email or slack alerts on price changes, competitor updates, stock availability, events, and more.
Are you the owner?
Claim this tool to publish updates, news and respond to users.
Sign in to claim ownership
Sign InDescription
Let Me Know When is a versatile website monitoring and alerting service that allows users to track changes on any public webpage without requiring any coding skills. Its core value proposition is providing a simple, accessible, and free entry point for individuals and businesses to automate the tedious task of manually checking websites for updates, ensuring they never miss critical information.
Key features: The tool enables users to monitor for specific text changes, additions, or removals on a target page. Concrete applications include tracking price drops on e-commerce product pages, receiving alerts when a competitor updates their blog or pricing page, getting notified the moment a coveted item comes back in stock, or monitoring event registration pages for openings. Alerts can be delivered via email, Slack, or through webhooks to connect with other automation platforms.
What sets Let Me Know When apart is its commitment to a genuinely free core service with no hidden limits on the number of monitors or alert frequency, a rarity in the monitoring space. It operates by periodically fetching and comparing the HTML of the specified URL, using intelligent diffing to ignore irrelevant changes like ads or timestamps. While it offers simplicity, it also provides integrations via webhooks for more technical users to build custom workflows, bridging the gap between a no-code tool and a developer-friendly API.
Ideal for savvy online shoppers waiting for discounts, small business owners keeping tabs on competitor activity, researchers tracking publication or data updates, and job seekers monitoring new postings on company career pages. It is also valuable for developers and marketers who need lightweight, reliable change detection without managing their own scraping infrastructure.
While the core service is free, the business model likely supports itself through optional premium features or a future paid tier for advanced needs like faster check intervals or team collaboration, though the current offering remains robust for most individual use cases.
