Site Sentry Webpage Tracker

Track Any Web Page Automatically.

Webpage Tracker monitors the URLs you care about and tells you the moment something changes. Whether it is a product price drop, a new press-release, tournament brackets, or release notes on your favorite framework! Stop refreshing the browser and let your Mac watch for you.

Key features

  - Change Alerts
  - macOS banners, sounds & badge
  - Menu-bar pop-over shows the three most-recent changes
- Visual & HTML Diff
  - Side-by-side HTML viewer
  - Snapshot history (HTML stored locally)
- Interval & Category
  - Five built-in intervals (5 min every 24 h) + custom names like "Competitors", "News"
- Pause / Resume / Refresh All
  - One click to silence checks, another to force a manual sweep
- CSV Import / Export
  - Bulk add hundreds of pages or back up your list in a second
- Run at Login
  - Starts silently; background fetch every 15 min (low energy impact)
- No Cloud, No Server
  - All snapshots live in your local directory, nothing leaves your Mac

How it works
	1.	Add a URL, choose an interval and (optionally) a regex/threshold.
	2.	WebpageTracker captures the page HTML on schedule and stores it locally.
	3.	You get an alert and a new entry in History.
	4.	Browse any previous version. HTML diff today, visual diff coming in 1.2!

Privacy first
- Runs entirely on-device.
- No analytics, no trackers, no account.
- Custom User-Agent identifies the app in server logs.