Android · Android 7.0 (API 24) and later
Sixteen tools that actually do what they say: real ICMP ping and traceroute through a native probe, a LAN scan that names the devices it finds, and a WiFi analyzer that shows you which channels are crowded. Nothing leaves your phone except the lookups you ask for.
Most phone network tools fake the hard parts. These do not.
Ping, traceroute and MTR go through a native probe using Android's unprivileged ICMP sockets. Traceroute reads each router's reply out of the socket error queue, exactly as the desktop tool does — so the hops you see are the hops your packets took.
The LAN scan sweeps the subnet and then asks the network who everyone is, over Bonjour, UPnP, WS-Discovery and NetBIOS at once. It weighs what comes back — a printer that advertises IPP is certain, a lone open port is a guess — and labels each device accordingly.
DNS lookups do EDNS0 and retry over TCP when a reply is truncated, because the standard says they must. iPerf speaks the genuine iperf3 control protocol, so it measures against any ordinary iperf3 server.
Sixteen tools, grouped by the question they answer.
ICMP reachability and latency
Map every hop along the path
Per-hop loss and latency over time
Internet download, upload and bufferbloat
Throughput against an iperf3 server
Discover devices on your network
Nearby APs, channels and signal
Find open TCP ports on a host
Services advertised over mDNS
Devices, services and port forwards
Your public IP, location and ISP
Domain and IP registration records
A, AAAA, MX, TXT and more
Subnets, masks and host ranges
Background alerts when a server drops
Power on saved machines remotely