Noticer - AI Change Monitor by PageCrawl.io

The simple, private way to watch any web page for changes.

Noticer keeps an eye on any page and tells you when it changes. It is deliberately simple, and it is private by design: every check runs on your device, and the pages you watch never leave your computer.

Add a page in three clicks, choose how often to check, and get a desktop alert when something changes. Watch a whole page or pick one element (a price, a stock status, a job count, a headline). Want fewer, better alerts? Add a plain-English rule like "notify me when the price drops" and a private on-device AI decides when a change is worth telling you about.

WHAT YOU CAN WATCH
• Product prices and back-in-stock / sold-out status
• Job boards and new listings
• Government, legal, and policy pages
• Competitor pages, news, release notes, docs
• Any page that matters to you

WHY NOTICER
• Free. No account needed to start.
• Private by design. Checks run on your device. The pages you watch and your browsing never leave your computer. No tracking, no profiles, no selling data.
• Reliable. A self-healing engine keeps checking while your browser is open, and catches up on anything it missed. It does not silently stop.
• Flexible. Check as often as every minute, or as slow as once a day.
• Precise. Watch a whole page or a single element you pick.
• See what changed. A clear before/after diff for every change, plus a one-line on-device AI summary (private, runs on your machine).
• Smart alerts. Add a plain-English rule like "notify me when it is back in stock" and a private on-device AI decides when a change is worth an alert, so you get fewer, more relevant notifications.
• Yours to keep. Export all your monitors anytime, in a format you can re-import or take to PageCrawl.io.

SWITCHING FROM ANOTHER PAGE WATCHER?
Moving from VisualPing, Distill, or Page Monitor? Bring your list with you: import an export file directly, or paste your URLs, and Noticer recreates your monitors in one step.

ADVANCED MONITORING WITH PAGECRAWL.IO
PageCrawl.io goes far beyond simple checks: track prices, stock and numbers with smart thresholds, and reliably monitor JavaScript-heavy and login-protected/OTP pages that local checks miss. AI reads every change, skips irrelevant updates, and tells you what actually matters. Get scheduled reports (a daily or weekly briefing that summarizes every change across your pages), plus long-term history, screenshots, and a web archive of every version. Build alert rules (only when a price drops, or a keyword appears) across email, Slack, Discord, Teams and webhooks, plus a full REST API and MCP to automate it. Runs 24/7 in the cloud even when your browser is closed, as often as every 2 minutes. Free to start, enterprise-ready. Noticer users get a discount on annual plans.

Noticer is made by the team behind PageCrawl.io.