Network Tools

Net Tools provides 31 network diagnostics, administration, and local sharing tools, with no account, advertising, analytics, crash reporting, or developer-operated server. Results stay on the device unless the user exports or shares them.

Diagnostics

• Connection: addresses, gateway, subnet, DNS, proxy, Wi-Fi link, and public IP

• Health check: internet validation, DNS, default route, gateway, and signal

• Ping over TCP, HTTPS, or ICMP, with a continuous monitor and widget

• Traceroute with per-hop loss and reverse DNS

• Speed test against configurable HTTPS endpoints

• HTTPS request builder and TLS certificate inspection

• DNS toolkit with DNSSEC evidence and resolver comparison

• Path MTU discovery, TCP tests, and an iPerf3-compatible client

• IP, RDAP, ASN, and MAC vendor lookups, and SPF, DKIM, and DMARC checks

Wireless

• Wi-Fi analyzer with 2.4, 5, 6, and 60 GHz overlap charts and least-overlap channels

• Cellular monitor for modem-reported serving and neighbor cells, per SIM

• Walk test with a coverage view and CSV, KML, and GPX export

• Bluetooth LE survey of nearby advertisements

Local network

• Device discovery via TCP, reverse DNS, mDNS, and SSDP

• Port and service scanner with TLS summaries

• mDNS and SSDP service browser with read-only NetBIOS and SNMP probes

• Unknown-device guard with a trusted inventory

• Wake-on-LAN, router detection, read-only OpenWrt connector, and topology map

Remote administration

• SSH terminal with VT and ANSI emulation, true color, and Unicode

• SFTP, FTP, and FTPS clients, and Telnet with an unencrypted-transport warning

• SSH host-key pinning and encrypted connection profiles

• Saved host checks with local alerts and optional webhooks

• Authorized Nmap scans through the user's own SSH host

Utilities and sharing

• IPv4 and IPv6 subnet calculator with VLSM planning

• Offline encoders, hashes, password generation, UUIDs, and QR codes

• Searchable result workspace with encrypted local backup

• HTTP, HTTPS, FTP, and FTPS servers for one chosen folder, with PIN, token, or account sign-in

• Peer-to-peer file, app, and text sharing over HTTPS with QR pairing and integrity checks

• Time-limited sharing sessions with a local audit log

Location access

Without precise location, or with Location off, Android withholds the connected Wi-Fi name and BSSID, Wi-Fi scan results, and cell information. Location is requested only from buttons in Connection, Wi-Fi analyzer, cellular monitor, walk test, or, on Android 11, Bluetooth LE survey; other tools do not need it. Only the walk test records the device's position, with cellular and Wi-Fi signal, during walks the user starts. Walk-test sessions stay on the device unless the user exports one or opts in to send one to a public cell-tower database with their own API key.

Permissions and their purpose

• Internet and network state: runs the tools the user starts and a public IP check when the app opens

• Wi-Fi state and multicast: reads Wi-Fi details, requests scans, and receives mDNS replies

• Precise location: unlocks Wi-Fi and cell details and records walk-test positions

• Nearby devices: runs the Bluetooth LE survey, which never pairs or connects

• Local network: reaches devices for discovery, scanning, and sharing

• Phone, optional: labels which SIM each cell belongs to

• Notifications and foreground services: keep a monitor, walk test, or sharing server running and visible

• Display over other apps, optional: shows the ping monitor's floating status

This app does not request camera, microphone, contacts, calendar, SMS, call log, storage, or background location, and makes no unencrypted web requests. Privacy policy

Open source

Net Tools is released under the Apache License 2.0. Source code on GitLab