Watch specific sources
Track public pricing pages, product pages, release notes, documentation, careers pages, and other relevant URLs.
AI competitor monitoring
Know when competitors change pricing, launch features, update documentation, or start hiring.
Describe the signal that matters. Sentinel4 monitors public web sources and sends a source-backed alert only when the change matches your rule.
Useful changes, not page diffs
Follow the market without living in browser tabs.
- Pricing: plans, limits, trials, and packaging
- Product: launches, release notes, and documentation
- Strategy: hiring patterns and positioning changes
Built for decisions
One monitoring loop for product, marketing, and founder teams.
Sentinel4 checks the sources you choose, evaluates the change against your rule, and includes the source context your team needs to verify it.
Filter with context
Write the business condition in plain English so routine edits do not become another noisy notification.
Act on evidence
Receive the detected change, source URL, and timing together so your team can review the signal before acting.
500-step free trial
Monitor one competitor free
Stop checking competitor pages by hand
Describe the change that matters. Sentinel4 will monitor public sources and preserve the evidence behind every alert.