Website Change Intelligence
Every change. Caught, classified, explained.
Monitor any website. AI detects what changed and tells you why it matters.
watchdiff.com/analyze
500+Pages Monitored
< 2minDetection Time
99.9%Uptime
4-tier pipelineActive
AI That Understands Every Change
Every change passes through classification, noise filtering, anomaly detection, and summarization — before you ever see an alert.
pipeline/classify_module.v2
Running
Input SourceDiff #8291
- $299.00
+ $249.00
// pricing container changed
+ $249.00
// pricing container changed
Classification Result
Price Change0%
Content Update0%
Layout Shift0%
Ad Injection0%
Notifications
Get Notified Your Way
Stay in the loop with flexible notification options. Whether you prefer a daily digest or real-time event triggers, WatchDiff has you covered.
9:41
Inbox
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WatchDiff
Just now
Change Detected: Pricing Page
We detected a significant change on example.com/pricing. The Enterprise plan price has increased...
Price ChangeHigh Impact
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WatchDiff
2h ago
Weekly Summary: 3 Changes
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WatchDiff
1d ago
New Feature: Visual Monitoring
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WatchDiff
3d ago
Monitor Status: All Stable
Inbox
Search
Settings
Slack, Discord, and SMS integrations coming soon.
3-step pipeline
See How It Works
Monitoring your competitors has never been this simple.
// step 1: capture
1
Add Your URL
Paste any URL and we run an instant baseline scan. Setup takes under 30 seconds — no browser extension needed.
// step 2: analyze
2
AI Monitors Changes
Our AI scans on your schedule, detects real content changes, and filters out ads, timestamps, and layout noise.
// step 3: alert
3
Get Smart Alerts
Get a plain-English diff summary via email or webhook — with context on what changed and why it matters.
Use Cases
Built for Every Team
Specific workflows for teams that need instant, actionable change alerts.
01 / 04
One platform. Every team's workflow.
WatchDiff plugs into the rhythm of your team — from pricing to stock to SEO — with alerts that are fast, structured, and actionable.
Competitive IntelCompetitor price monitoringTrack pricing across your entire competitor set — react before customers notice.
3 competitors trackedlive
StoreX3m ago
Wireless Headphones
$149$11920%
ShopY1h ago
4K Monitor
$399$349-13%
MegaMart5h ago
Gaming Laptop
$1,299no change
Comparison
Why Teams Choose WatchDiff
See how we stack up against other monitoring solutions. We focus on what matters: accurate detection without the noise.
AI-Powered Change Analysis
WatchDiff
Basic
Ent.
DIY
Smart Noise Filtering
WatchDiff
Basic
Ent.
DIY
Sub-Minute Change Detection
WatchDiff
Basic
Ent.
DIY
Flexible Check Intervals
WatchDiff
Basic
Ent.
DIY
Visual Diff Reports
WatchDiff
Basic
Ent.
DIY
REST API & Webhook Integration
WatchDiff
Basic
Ent.
DIY
Starting Price
WatchDiffFree
Basic Monitors$10/mo
Enterprise$50/mo
DIY Scripts$0 (your time)
Feature
WatchDiff
Basic Monitors
Enterprise Tools
DIY Scripts
AI-Powered Change Analysis
Smart Noise Filtering
Sub-Minute Change Detection
Flexible Check Intervals
Visual Diff Reports
REST API & Webhook Integration
Starting Price
Free
$10/mo
$50/mo
$0 (your time)
Plans
Simple, Transparent Pricing
Start free, upgrade as you grow. No hidden fees.
MonthlyAnnual-20%
Free
Perfect for casual monitoring
$0/mo
- 5 Monitors
- Daily checks
- 7-day History
- Email Alerts
- Basic Diff Visualization
Starter
For serious individuals
$7.20/mo
Billed $86.40/yr
- 20 Monitors
- Every 15 mins
- 30-day History
- Instant Notifications
- Noise Filtering
- Priority Support
Most Popular
Pro
Power users & small teams
$23.20/mo
Billed $278.40/yr
- 100 Monitors
- Every 5 mins
- 90-day History
- Advanced AI Analysis
- API Access
- Webhook Integrations
Business
Scale your monitoring
$63.20/mo
Billed $758.40/yr
- 500 Monitors
- 1-minute checks
- 365-day History
- SSO / SAML
- Custom SLAs
- Dedicated Account Manager
FAQ
Frequently Asked Questions
Everything you need to know about intelligent website monitoring.
Get Started
Start Monitoring Your Websites Today
Start monitoring changes in under 60 seconds.
Free forever. No credit card required.