iPerf Speed Test & Network

Is it your WiFi, your router or your internet provider? iPerf3 Speed Test & Network gives you the answers, with more than 15 professional network tools in one fast, clean app.
Whether you're a gamer chasing lag, a remote worker with choppy video calls, or an IT pro troubleshooting a network, you'll find the right tool here, without an account or sign-up.
SPEED TEST, THREE WAYS
• iPerf3: measure the true throughput of your local network against your own iPerf3 server, or pick one of the built-in public servers
• CDN test: download and upload speed against global content delivery networks
• Internet speed test against nearby servers, with automatic best-server selection
• Live speedometer, plus ping, jitter and packet loss for every test
• Connection health report that explains your results in plain English
FIND WHAT'S SLOWING YOU DOWN
• Bufferbloat test: see how much your latency rises under load, graded A+ to F. The #1 hidden cause of lag in games and video calls
• Ping: continuous monitoring with a live chart, jitter and packet loss
• Traceroute: see every hop between you and any server
• MTR: continuous traceroute with loss and latency per hop, to find exactly where the problem is
• Packet size test: ping sweep from 64 to 1500 bytes to detect MTU and fragmentation issues
SEE WHO'S ON YOUR NETWORK
• Device scanner: discover every device on your LAN, with manufacturer lookup and Bonjour services (printers, Apple TV, Chromecast, HomeKit, NAS and more)
• Wi-Fi and network details: local IP, router, network interfaces and VPN status
• Wake-on-LAN: wake up computers on your network with a magic packet
• Share Wi-Fi: generate a QR code so guests can join your network instantly
INSPECT THE INTERNET
• My IP: public IP address, ISP, ASN and approximate location
• IP / WHOIS: reverse DNS and RDAP lookup, including owner and abuse contact
• DNS lookup: query A, AAAA, MX, TXT, CNAME, NS, SOA, SRV, CAA and PTR records, with DNSSEC validation
• DoH benchmark: compare the speed of popular DNS-over-HTTPS resolvers and pick the fastest one
• HTTP headers: inspect the response headers and redirects of any URL
• HTTP timing: break down a request into DNS, connect, TLS, time to first byte and download
• TLS / certificate inspector: certificate chain, TLS version, cipher and expiry date

HANDY UTILITIES
• Subnet calculator: CIDR, netmask, address range and host count
PRIVATE BY DESIGN
No account, no sign-up. Your network scans stay on your device and are never uploaded to any server.
Perfect for home users, gamers, streamers, remote workers, network engineers, sysadmins and anyone who wants to understand their connection.
Download now and find out what's really happening on your network.