About
Know when anything changes online
OnChange is a website change detection and monitoring platform. We help developers, product teams, and businesses stay ahead of changes on the web that matter to them.
Our mission
The web changes constantly. Prices shift, APIs evolve, content gets updated, competitors launch features, and regulations get amended. Most of these changes happen without notice. We built OnChange to solve a simple problem: give teams a reliable way to know when the web content they depend on has changed, the moment it happens. Not hours later. Not when a customer complains. The moment it happens.
We believe monitoring should be accessible to everyone, not just teams with large engineering budgets. That means simple setup, clear pricing, and a free tier that actually works. Whether you are a solo developer tracking an API or an enterprise team monitoring thousands of pages, OnChange is built for you.
What we value
Reliability first
Monitoring is only useful if the monitor itself is reliable. We invest heavily in infrastructure redundancy, automated failover, and rigorous testing so our customers can trust that if something changes, they will know.
Simple by default
Powerful tools don't have to be complicated. We design every feature to work with sensible defaults. Paste a URL and you're monitoring in seconds. Advanced configuration is always available, but never required.
Speed matters
When a competitor changes their pricing or a critical API response shifts, every minute counts. We built our infrastructure for sub-minute check intervals because we believe speed is a feature, not a luxury.
Transparency
We publish our uptime status publicly, document our API thoroughly, price our plans clearly, and write about our engineering decisions openly. We earn trust by being transparent.