LANScannerPRO

Know what's on your Wi-Fi.

LanScannerPro is a fast LAN scanner (IP scanner + port scanner) that finds devices on your local network and helps you understand what they are. Run a subnet scan, check open ports with safe scan profiles, and discover services via mDNS/SSDP in a clean, modern Material 3 interface.

Use it to:

- Identify unknown devices (phones, TVs, printers, cameras, consoles, IoT)

- Troubleshoot connectivity and "what changed?" moments

- Verify your network after adding a router, extender, or smart-home gear

- Learn networking hands-on by seeing real devices, ports, and services

Why users like it:

- No account required, no ads, and no subscriptions needed to get started.

- Beautiful device cards with hostnames, vendor hints, latency, ports, and fingerprints.

- History and diffs that make network changes obvious.

- Optional Pro unlock (one-time purchase) for exports, background monitoring, and power-user tools.

Key features:

- One-tap subnet scan with reachability and latency.

- Port scan profiles: Common, Web, Remote Admin, Extended, All (1-1024), plus Custom (Pro).

- Service discovery via mDNS and SSDP to help identify device roles.

- Device details: ping, port scan, labels, notes (Pro), and trust/watchlist controls.

- History + diffs: compare sessions to see new, gone, and changed devices.

- Topology view: visualize your network and export GraphML/PNG/PDF (Pro).

- Exports (Pro): CSV, JSON, and PDF with diff summaries.

- Background monitoring (Pro): alerts for new/gone devices and watchlist matches.

- Offline fingerprinting hints for device type and manufacturer.

- Router enrichment (opt-in): connect to your gateway over your local network (SSH/SNMP and local APIs when supported).

Pro unlock (one-time purchase):

- Unlimited history + diffs so you can spot changes over days/weeks.

- Export pack: CSV, JSON, and PDF for sharing, auditing, and lab notes.

- Background monitoring on trusted networks with alerts (new/gone devices, watchlist matches).

- Custom port lists + advanced port profiles for deeper troubleshooting and learning.

- Device notes to build a “network notebook” for every device you discover.

Transparency and permissions:

- Requires Network and Wi-Fi permissions to scan the local subnet.

- Location or Nearby Wi-Fi Devices permission is only used to read the current SSID on Android (when available).

- Scan results are stored on your device and only shared when you export or copy data.

- This app uses Google Crashlytics to improve stability; it only sends data if a crash occurs (see Privacy Policy).

- Device identifiers are best-effort; some networks or OS policies may limit what's visible.

Built for curious learners, home users, field techs, and admins who want fast, reliable LAN visibility without leaving the device.

## Recent changes

- Improved device discovery and identification (mDNS/SSDP + hostname probes).

- More accurate device type and manufacturer hints.

- Faster scans and smoother topology generation on unchanged networks.

- Better handling for large subnets to keep scans responsive.