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Watch any page for changes — alerts on price drops, restocks, job posts & updates. Private: checks & AI run in your browser. Stop manually checking websites. PageSentry watches them for you. Whether you're tracking prices, monitoring job boards, watching competitors, or following breaking news — PageSentry alerts you the moment anything changes. What makes PageSentry different: 🔒 Private by design — The pages you watch are fetched directly by your browser and compared on-device; your watch list and the page content are never uploaded to a PageSentry/Aegis server. Cloud-based monitoring services run your checks on their servers instead — and meter them against a paid check quota. (The only first-party call PageSentry makes is to aegisfirma.com to check your Pro sign-in.) 🤖 AI Explains Changes — Powered by Gemini Nano (on-device). Instead of showing you a confusing raw diff, PageSentry explains in plain English what changed and why it matters. "Price dropped from $299 to $249" not a wall of green/red text. ⚡ Actually Free — 5 monitors with hourly checks, forever free. No credit card, no signup, no email required. Install and start watching in 60 seconds. 📍 Target Specific Elements — Don't watch the whole page. Click to select exactly what you care about: just the price, just the stock status, just the job listings section. Perfect for: - 🛒 Price tracking (Amazon, eBay, Shopify stores) - 💼 Job board monitoring (company careers pages, Glassdoor listings) - 📰 News and blog sections - 📦 Stock/availability alerts - 🔍 Competitor pricing and feature updates - 📊 Sports scores, event listings, government announcements Free Plan: ✅ 5 page monitors ✅ Hourly checks ✅ AI change summaries (Gemini Nano) ✅ Visual diff view ✅ Browser notifications ✅ Element-specific monitoring Pro Plan (Early Access) — $2.99/month: ⭐ Unlimited monitors (Free: 5) ⭐ 15-minute check frequency (Free: hourly) ⭐ Extended change history — 1,000 entries (Free: last 5) ⭐ Export/import monitors > Pro entitlement is server-validated: sign in once at aegisfirma.com and your Pro status applies across every Aegis extension. A pasted license key alone never unlocks Pro. Why switch from a cloud monitor? Cloud monitors run your checks on their servers and meter you behind paid tiers. PageSentry gives you a genuinely free 5-monitor tier and keeps your watch list on your own device. Privacy Policy: https://aegisfirma.com/en/privacy