Change alerts with evidence

The web changes constantly.
Keep a dependable watch.

Nythra monitors any URL, shows exactly what changed, and alerts you by email or webhook.

Start Monitoring Free See how it works
12h
Free check interval
6h
Pro check interval
50
Pro changes retained per watch
nythra.io/dashboard
Monitored pages
12
Checks today
48
Alerts sent
3
Check interval
6h
Pricing page changed
competitor.com — 3 sentences modified
2m ago
Checks / Day
What you get

Precision monitoring, no fluff

Continuous monitoring
Nythra tracks availability, HTTPS and domain expiry, redirect destinations, and meaningful DNS/IP changes automatically. Pro can tune how many failures confirm an outage.
Scheduled
Readable text and visual diffs
Target an exact page region or up to 10 typed JSON API values, schedule maintenance, publish privacy-safe status, then review changes, snapshots, and CSV reports.
Before + after
Email + webhook alerts
Use email alerts on every plan, or add Pro webhooks and opt-in weekly monitoring reports for a concise operational summary.
Multi-channel on Pro
Retained change history
Every retained change includes a timestamp and bounded before/after content. Pro can compare response source as well as readable page content. Free keeps 20 changes per watch; Pro keeps 50.
Versioned
Pro API access
Manage watches and query retained changes programmatically with a personal Pro API key.
Developer-friendly
Simple setup
Paste a URL, choose the available check interval, and start monitoring. No agents or config files to deploy.
Zero friction
Scheduled checks Text diffs Visual snapshots Private history
Start free
Monitor up to three active pages every 12 hours, with email alerts and 20 retained changes per watch.
See the evidence
Compare retained text changes and visual snapshots from your private dashboard.
Automate on Pro
Check up to 30 pages every six hours and connect webhooks or the personal API.
Three clear steps

No config files.
No integration headaches.

01

Paste a URL

Add any webpage you want to monitor. Competitor pricing, job boards, docs pages — paste the URL and you're done.

02

Set your check interval

Choose checks every 12 hours on Free or every six hours on Pro.

03

Get alerted with exactly what changed

When something changes, review the added and removed text and receive an email or Pro webhook alert.

nythra.io/dashboard
competitor.com/pricing — monitored
Added 2 minutes ago · checking every 6 hours
Live
Change detected on pricing page
3 sentences modified · visual comparison ready
Just now
Alert sent to your email
webhook.site/hook-xyz · delivered
✓
Who it's for

Built for teams that can't afford to miss a change

Agencies
Monitor client sites for changes and deliver proactive reports before they ask.
See how →
E-commerce
Track competitor pricing, inventory signals, and product page updates on a reliable schedule.
See how →
Competitive Intelligence
Build a dependable record when a competitor updates pricing, features, or messaging.
See how →
Content & SEO
Catch title tag changes, meta updates, and content rollbacks before they tank rankings.
See how →
Developers
Get webhook alerts into your pipeline and automate on every page change.
See how →
Legal & Compliance
Audit vendor pages, terms of service, and disclosures without manual review cycles.
See how →
Pricing

Simple, transparent pricing

Start free. Upgrade for more watches, automation, and advanced browser access.

Free
$0 forever

Start monitoring the pages that matter most.

  • 3 active watches
  • Checks every 12 hours
  • 250 monitored page checks/month
  • 50 content-change email alerts/month
  • 20 retained changes per watch
  • Visual baseline preview
  • SSL expiry monitoring
  • Focused content rules
  • Redirect + DNS integrity monitoring
  • Domain registration expiry monitoring
Start Free
Best value
Pro
$9.99 /mo

Faster checks and automation for serious monitoring.

  • 30 active watches
  • Checks every 6 hours
  • 4,000 monitored page checks/month
  • 150 managed browser checks/month for complex public pages
  • Chrome Connector checks do not use that browser allowance
  • 250 content-change emails/month
  • 1,000 content-change webhooks/month
  • 50 retained changes per watch
  • CSV change and health reports
  • API access
  • Automatic visual change snapshots
  • Percentage-based change sensitivity
  • Custom outage confirmation thresholds
  • Response-time incident and recovery alerts
  • HTML size budget incident and recovery alerts
  • SEO title, description, canonical, and robots monitoring
  • HTTP security-header integrity monitoring
  • CSS selector and attribute targeting
  • Typed multi-field JSON/API monitoring
  • Bounded HTML source-code change monitoring
  • Planned maintenance windows
  • Private-link status pages and multi-watch hub
  • Weekly monitoring reports
  • SSL expiry email + webhook alerts
  • Focused content rules
  • Redirect + DNS integrity monitoring
  • Domain expiry email + webhook alerts
Upgrade to Pro
Start Free — No Card Required

Upgrade for more watches, automation, and advanced browser access · Cancel anytime

Set it and know.

Start with a URL and a clear monitoring goal. No credit card required.

Start Monitoring Free