Existing trackers fail for 3 reasons: HTML scrapers break on layout updates, API/JSON requests get blocked by anti-bot walls, and pixel-by-pixel screenshot comparisons trigger endless false positives. Spotter changes the game. Our AI Vision Engine doesn't just look at pixels; it understands semantic context (e.g., "Sold Out" changing to "Buy"). It reliably tracks Price, Stock, and Bookings on any site, delivering instant native iOS push notifications without the noise.