Know the moment any page changes in a way that matters.
Forewarn watches the pages you care about — competitor pricing, tech changelogs, news, careers, regulatory docs — and sends you a one-sentence summary in email or Slack when something meaningful ships. No noise, no dashboards to babysit.
Demo mode — Forewarn is running with seeded data, no auth required.
A typical alert
Linear added a $20/user Business tier between Standard and Enterprise.
linear.app/pricing · classification: meaningful · confidence: 0.94
How it works
- Step 1
Paste a URL
Add a pricing, changelog, blog, or careers page from any source you track. Forewarn auto-classifies the page type.
- Step 2
We check it for you
Forewarn renders the page (JS included), extracts the text, and compares it to the last snapshot — hourly or daily, your call.
- Step 3
Meaningful changes only
Claude classifies every diff. You only hear about the ones that matter, in one sentence, in email or Slack.
Built to be ignored
The whole point is that you stop checking pages manually. Forewarn is designed so you can set it up once and forget it exists — until it pings you.
Diff-aware, not polling-noisy
Content-hash and text-diff first. AI only runs when the page actually changed — not on every poll.
Noise-free classification
Claude labels each change as meaningful, minor, or ignore. CSS churn and analytics tags never reach you.
Where you already work
Morning email digests for review. Slack webhooks for the urgent ones. Per-destination routing coming soon.
Works on JS-heavy pages
Real Chromium in a sandbox, not a raw fetch. Handles hydration, CSR dashboards, and lazy-loaded pricing.
Start monitoring your first 5 URLs free.
No credit card. Upgrade when you outgrow it.