Local Network Inspector

Know which endpoint responded, and what changed since your last check. Local Network Inspector is a one-time paid Android utility for a repeatable local TCP watchlist and portable support records. ACTUAL CHECKS Add private, link-local or loopback IPv4 targets. Choose specific TCP ports, then run connection attempts on Android’s default network. Results distinguish connected, refusal, timeout, route error, permission block and unfinished checks. Add an optional hostname for actual DNS resolution. A USEFUL BASELINE Save a measured inspection, select it as a baseline, and compare a later inspection by IP and port. A changed check scope is identified separately from changed responses. Unfinished checks remain incomplete, not a claimed outage. Add a name and a note about impact, action or owner. REPORTS YOU CAN KEEP Save or share a ZIP containing the current snapshot JSON, TCP-results CSV, readable English support report and SHA-256 manifest. A separately selected baseline JSON is included. Copy the report text or save through Android Files. Records, labels, notes and the selected baseline survive an ordinary app restart. PHONE AND TABLET Use compact endpoint rows on a phone. A landscape tablet keeps the watchlist beside the selected result, comparison or report preview. English and Korean interfaces follow the device language; exported reports are in English. PAID ONCE No subscription, in-app purchases, ads, account, analytics SDK or developer-server upload. Records stay on device unless you choose to save or share them. Your chosen targets and DNS provider receive the requested network traffic; file/share providers may use their own cloud services. SCOPE Up to 32 targets, 12 TCP ports, 250–3,000 ms per TCP attempt and 30 saved inspections. The oldest inspection is removed at the storage limit. Checks stop when you leave the app. IPv4 target host endings 1–254 are supported; DNS may return IPv4 and IPv6. DNS can use system cache. Android 10 or later. This is foreground TCP and DNS inspection, not ICMP ping, whole-LAN device discovery, signal measurement, MAC/SSID identification, security scoring or vulnerability testing. A timeout does not prove that a host is offline or a port is closed. IP addresses are not stable device identities. Router, VPN, firewall and Android permission settings affect results. Inspect only networks you own or are authorized to administer. Android and iOS editions are separate purchases and may differ in features.

Initial Android release with actual local TCP checks, optional DNS resolution, saved baseline comparisons and ZIP/CSV/JSON support reports.