Now monitoring 4 signal types

Know When Anything
Changes Online

Monitor websites, APIs, RSS feeds, and uptime. AI-powered change detection filters out the noise and alerts you only when something meaningful changes.

How It Works

Three simple steps to start monitoring anything.

1. Set Up a Signal

Choose what to monitor — a webpage, API endpoint, RSS feed, or server uptime.

2. We Watch For Changes

We check your signals on a schedule and use AI to distinguish real changes from noise.

3. Get Notified

Receive instant alerts via email, Slack, webhooks, or SMS when something changes.

What Can You Monitor?

Four powerful signal types to cover any monitoring need.

Website Change

AI detects meaningful content changes — like price drops or status updates — while ignoring timestamps, ads, and other noise.

Uptime

Monitor your servers and services. Know instantly when they go down — or come back up.

RSS Feed

Watch RSS and Atom feeds for new items. Stay on top of blogs, news, and releases.

JSON API

Monitor any JSON API endpoint. Track specific fields and get alerted on value changes.

Real-World Use Cases

Price Drop Alerts

AI ignores cosmetic page updates and only alerts you when a real price change happens. Never miss a deal again.

Uptime Monitoring

Know when your website or API goes down before your customers do. AI confirms real outages so you skip false alarms.

New Content Alerts

Follow blogs, news sites, and RSS feeds. AI summarizes what changed so you know at a glance whether it matters.

API Monitoring

Track any JSON endpoint. AI filters out routine fluctuations and alerts you only on significant data shifts.

Simple, Transparent Pricing

Start free, upgrade when you're ready.

Free
$0

/mo

  • AI-powered change detection

  • Email notifications

  • 1-hour check interval

Starter
$9

/mo

  • All Free features

  • Webhook notifications

  • 30-minute check interval

Most Popular
Pro
$29

/mo

  • All Starter features

  • Slack notifications

  • 15-minute check interval

Business
$79

/mo

  • All Pro features

  • 5-minute check interval

  • 365-day history

Start Monitoring For Free

Create up to 3 signals on our free plan. No credit card required.