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Live signal scan
Every nearby network sorted by strength, with colour-coded bars, dBm, channel and band at a glance.
Free · Android 7.0+ · No account
See every Wi-Fi network — and find the clearest channel.
A fast, private Wi-Fi analyzer. Check signal, security and channels, map dead zones, and pick the least-congested channel for your router.
Scan results stay on your device — nothing is uploaded.
● CONNECTED
Home-5G
5 GHzWPA3
Office_WiFi
Cafe Guest
TP-Link_2.4
Features
Everything you need to understand your Wi-Fi
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Channel analyzer
Real RF scoring — overlap and signal-weighted — recommends the clearest channel (1/6/11 on 2.4 GHz, best on 5 GHz) at 20/40/80 MHz.
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Signal history
Watch signal over time as you walk around to find and fix dead zones in your home or office.
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Find my router
A live “warmer / colder” radar that gets stronger as you move toward the access point.
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Security & bands
See Open / WPA2 / WPA3 security and 2.4 / 5 / 6 GHz bands, with open networks flagged.
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Monitoring & alerts
Get notified when a new network appears, one disappears, or your signal drops — even in the background.
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Export to CSV
Share or save a full scan as a CSV for reports, site surveys or troubleshooting.
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Material You & dark mode
A clean, modern Material 3 interface that adapts to your system theme.
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Private by design
No account, no sign-in, no server. Your scan results never leave your device.
Why it matters
Pick the right channel, get faster Wi-Fi
Slow Wi-Fi is often caused by neighbours’ networks overlapping yours. Wi-Fi Scanner measures the real interference on each channel and tells you exactly where to move your router.
2.4 GHz
Only channels 1, 6 and 11 don’t overlap. The app scores each and picks the clearest — and warns you off the “in-between” channels that cause the worst interference.
5 GHz
More room, but bonded 40/80 MHz channels overlap each other. The width selector shows how your clear-channel options shrink as you go wider.
Signal-weighted
A strong neighbour hurts far more than a distant one, so the score weights every overlap by its signal — not just a raw count of networks.
Ready to fix your Wi-Fi?
Download Wi-Fi Scanner free and find your clearest channel in seconds.
Get it on Google Play
FAQ
Frequently asked questions
How do I find the best Wi-Fi channel?
Open the Channel Analyzer. It scores every candidate channel by how much nearby networks overlap it, weighted by their signal strength, and recommends the clearest one — channels 1, 6 or 11 on 2.4 GHz, and the least-contested channel on 5 GHz.
Does the app collect my location or data?
No. Android requires location permission to list Wi-Fi networks, but scan results stay on your device and are never uploaded. The app has no account and no server.
Why does a Wi-Fi scanner need location permission?
It’s an Android platform rule: since Android 9, any app that reads Wi-Fi scan results must hold location permission with Location services on. The app only uses it to obtain the network list.
What Android version do I need?
Android 7.0 (Nougat) or newer.
Is it free?
Yes. The app is free with ads. An optional one-time Pro purchase removes ads and unlocks extra tools, and background monitoring is available as a subscription.