Domain Monitor is a simple uptime monitoring app for websites, domains, and APIs. Track whether your sites are up, how fast they respond, when SSL certs are close to expiring, and when latency spikes. It’s designed to feel like a status app: quick to open, easy to understand, useful from your phone. Start with local checks, or sign up for a 21-day free Pro trial with cloud monitoring, push alerts, email notifications, SSL warnings, latency spike detection, and traceroute. No credit card needed.