Support

Inspect a local endpoint

Add a private, link-local or loopback IPv4 address ending in 1–254. Add a single host or a last-octet range of up to 32 total targets. Labels are your notes, not detected device identities. Only inspect networks you own or are authorized to administer.

Choose 1–12 TCP ports, a 250–3,000 ms timeout, and optionally a DNS hostname without a scheme or path. Tap Inspect watchlist. Four checks may run concurrently. Stop inspection records unfinished checks as incomplete; leaving the app also stops active work.

Read measured results

Connected means a TCP connection succeeded. Refused means a refusal was returned. No response means a timeout, not proof of a closed port or offline device. A route error or permission block is shown separately. Timing measures the connection attempt; it is not ICMP ping. DNS resolution can use the system cache and the configured DNS provider.

Compare two inspections

In Snapshots, open an older record and choose Use as baseline. Open a later record to compare matching IP:port states. Newly checked and not-rechecked endpoints reflect scope differences, not discovery or disappearance of physical devices. A stopped inspection is partial. Each record can have a name and a note about impact, action and owner.

Export real files

Report → Save ZIP opens Android Files. The ZIP contains Inspection.json, TCP-results.csv, Support-report.txt and Manifest.json with SHA-256 hashes. A selected baseline is included when applicable. Reports are in English; the app interface supports English and Korean. Share opens Android’s chooser. File and share providers may use their own cloud services.

Storage and limits

Up to 32 targets, 12 TCP ports and 30 inspections. Saving a 31st inspection removes the oldest private record and its generated ZIP; a removed baseline is cleared. Deleting a record removes its private ZIP but does not remove exported copies. No background monitoring, ICMP, SSID/MAC identification, full subnet discovery, signal measurement or security certification. Android 10 or later; router, VPN, firewall and platform permission settings can change reachability.

Unreadable records

If the private record cannot be read, its original is retained and can be saved from Help. Healthy new work starts separately. Keep important exported reports outside the app before clearing data or uninstalling.