Find What's Missing on Your Network
404 gives you real networking tools on iOS — ICMP ping, traceroute, DNS queries, and local device discovery — with an AI assistant that helps diagnose issues.
Available on iOS
Real Network Tools on Your iPhone
Most iOS network apps simulate results or use workarounds. When you need to diagnose a real problem — a dropped connection, a misconfigured DNS, a mystery device on your network — you need real tools.
404 is different. Actual ICMP ping, actual traceroute, actual raw DNS queries. Plus an AI assistant that understands networking and helps you interpret what you find.
What 404 Does
Real Network Tools
Not simulated. Real ICMP ping, traceroute, and raw DNS queries from your iPhone.
Device Discovery
Scan your local network and see every connected device with hostname and vendor info.
AI Diagnostics
Describe your problem. The AI assistant runs the right tests and explains what's wrong.