Let Me Know When

Let Me Know When positions itself as a practical, AI-augmented website monitoring tool for users who need to stay on top of changes across multiple sites without drowning in raw data. Unlike traditional monitoring services that surface every diff, this platform focuses on delivering actionable alerts—via email or Slack—backed by AI-generated summaries that help you quickly decide whether a change matters. It is not a replacement for enterprise-grade uptime monitoring or deep analytics suites; rather, it fills a specific niche for small to mid-sized teams and individuals who want a lightweight, configurable watchtower over competitor moves, price fluctuations, stock restocks, SEO shifts, and content updates. The tool’s standout strength lies in its breadth of monitoring categories: it covers price changes, stock availability, design updates, SEO performance, content updates, product launches, job postings, event tickets, crypto and stock prices, Google search trends, news and media updates, website uptime, customer reviews, and software version tracking. This broad scope means a single platform can serve multiple use cases, from an e-commerce owner tracking a rival’s pricing strategy to a product manager watching for feature announcements. The AI-powered insights feature is key—it doesn’t just flag that something changed; it attempts to summarize what changed and why it might matter, saving users the cognitive load of parsing raw diffs. For example, an alert might note that a competitor’s homepage added a new hero section promoting a discount, rather than just showing a diff of HTML. However, the free plan’s limitation of two checks per website per day makes it more of a teaser than a serious tool for frequent monitoring. To get hourly checks, you need the $89.99/month Premium plan, which also unlocks up to 50 websites and 10 AI workflows. The absence of an API or integrations beyond Slack is a notable gap for teams that rely on custom workflows or tools like Zapier. The ideal user is someone who values timely, summarized alerts over raw data and is willing to pay for higher frequency and Slack integration. E-commerce businesses will find the price drop and stock alerts most immediately useful, while SEO specialists can leverage the content change tracking to react to competitor content updates that might impact rankings. Product managers and marketing professionals monitoring competitor sites for design changes or new feature launches will also benefit. That said, the tool’s reliance on public website content means it cannot monitor pages behind login walls, limiting its utility for tracking private dashboards or gated content. The pricing is reasonable for the features offered, but the jump from the Advanced plan (6 checks per day) to the Premium plan (hourly checks) is steep, and the middle tiers may leave power users wanting more frequent checks without the full premium cost. Overall, Let Me Know When is a solid, focused tool that excels at turning website monitoring into actionable intelligence, provided your needs align with its frequency limits and integration scope.