NetSpectra - Network Analyzer

NetSpectra shows what your phone's radios see and tells you what to do about it. Free, no account, and everything it measures stays on your phone.

WI-FI
• Channel graph and waterfall for 2.4, 5 and 6 GHz, with the quietest channel for your router
• Your connection in detail: signal, link speed, standard (Wi-Fi 4–7), channel width, security
• Live radar of nearby networks and an overall health score

SPEED & QUALITY
• Download, upload and bufferbloat (lag under load) on the open Measurement Lab platform
• What your line is good for: HD calls, 4K streaming, gaming, big uploads
• Ping, DNS benchmark, traceroute with a world map, port scanner for your own devices
• A Live Update shows the running test in the status bar

MOBILE NETWORK
• Serving and neighbor cells for 2G to 5G: bands, channels, carrier aggregation
• Signal history and a handover timeline, frequency calculator
• Walk-test map: color your route by signal and estimate where the towers are

SECURITY
• Wi-Fi security audit: weak encryption explained, with how to fix it
• Look-alike (evil twin) networks that copy a name you trust
• Bluetooth trackers (AirTag, SmartTag, Tile, Chipolo) that travel with you
• New devices on your home network

INSIGHTS
• One health score with what to fix, step by step
• Optional background checks: trends, your best and weakest places, a weekly report
• Home-screen widgets and Quick Settings tiles

ALSO
• LAN scanner with device names and open services, Ethernet details, Wi-Fi QR codes
• Bluetooth scanner with a hot/cold finder for lost devices
• GNSS sky plot: every satellite and constellation, dual-frequency check
• Share any result, export everything to CSV, GPX or GeoJSON, and back it up
• Material You design, dark mode, Neon and High-contrast themes

PRIVACY
Measurements, scans and locations are stored encrypted on your phone and never uploaded. The app is free with ads from Google AdMob; ads pause while a measurement runs. Speed tests run on Measurement Lab, which publishes results as open data.