izs NetTools

Simple single-screen Android network tools

Simple but complete Android network tools. All 13 tools live on one screen — no navigation, no fragments: a target bar on top, a two-row tool selector in the middle (tap a tool to run it), and a terminal-style output console below.

Features Tool What it does Ping ICMP echo via the system ping binary, streamed live Dig DNS lookup (A, AAAA, MX, TXT, NS, CNAME, SOA) via dnsjava, configurable server Trace Traceroute: real binary if present, otherwise TTL-ping fallback (no root) Whois RDAP-first, WHOIS port 43 with referral following IP Info Geolocation/ASN for any IP or domain My IP This device's current public IP Ports TCP port scan from a configurable list (single ports + 8000-8010 ranges) Cert TLS certificate viewer (subject, issuer, validity, SANs, SHA-256, trust status) Headers HTTP response headers with redirect chain IP Scan Ping scanner: single IP, A.B.C.X-Y, or /24-/32 (empty = own /24), UP lines with IP + hostname (MAC + [gw] optional via Scan setting, default off) + compact RTO ranges (offline lines optional, default off) Neighbor LAN neighbor discovery, no target needed: MikroTik (MNDP on UDP 5678, even without IP) + local services (mDNS) + UPnP devices (SSDP) Loop L2 broadcast-storm check on the LAN gateway + L3 routing-loop trace (empty = auto gateway, hold to pick L2/L3/Both) WiFi Analyzer Live nearby AP list (SSID, signal, channel, band, security) re-scanned every 30 s; filter tabs Band → Channel → Security → Display (rightmost); Band + Security multi-select (default all on) = List (AP rows, connected in green) or Channel (overlap AP count per country-legal primary channel — country detected from network SIM/ISO → device locale, never GPS; an AP counts toward every valid channel its bandwidth covers — empty legal channels of selected bands listed, sorted by channel number); optional SSID/MAC filter; no target needed Extras: saved favorites + recent targets (max configurable, default 5), auto-run on tool pick and on saved-target pick (both toggleable), home tool grid order + visibility configurable in Settings → Tools, semantic output colors (toggleable, console follows light/dark theme), text size +/-, clear output (runs append, capped at 2000 lines), 5 app themes (AMOLED, Dark, Darker, Sand, Light gray) with per-section custom colors saved as named schemes (same name = overwrite, new name = new scheme), double-press back to exit.