WiFi Analyzer: Signal Scan

Gang Liu

Contains ads

About this app

Stop guessing where your internet went. Take absolute control of your wireless environment with Wi-Fi Analyzer: Signal Scan.

Get a real-time, professional-grade picture of every Wi-Fi network around you—no expensive hardware, no subscriptions, and zero ads. Whether you're hunting down dead zones at home, planning a mesh network, or auditing an enterprise office, our three focused modules give you the exact data you need, completely offline.

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📡 SIGNAL — Real-Time Link Monitoring
Know your connection quality at a single glance with live visual tracking.
• Live RSSI Timeline: Watch your signal strength plotted live on a scrollable chart. Visual reference lines (−50, −60, −70 dBm) instantly rate your link: Excellent, Good, Fair, or Poor.
• Comprehensive Tech Specs: View SSID, BSSID, channel, frequency band, and link speed in one compact dashboard. Tap any field to copy it instantly.
• Background Logging: Keep mapping your space. Enable background logging to sample signal strength as you walk around, with a low-priority notification showing live dBm values.
• Home Screen Widget: Keep tabs on your network without even opening the app. Displays your current RSSI and channel directly on your launcher.

📊 CHANNELS — Find the Quietest Frequency
Stop fighting for bandwidth. Scan all available access points (APs) across 2.4 GHz, 5 GHz, and 6 GHz bands.
• Visual Spectrum Insights:
- Bars View: Sorted list for instant signal strength comparison.
- Grid View: A complete channel occupancy map. Tap any channel to filter and spot overlapping networks.
- Spectrum View: Frequency-domain visualization that makes wireless interference visible at a glance.
• Smart Channel Advisor: Instantly get recommendations for the least-congested channels per band (such as non-overlapping 1/6/11 for 2.4 GHz).
• Deep AP Inspection: Identify Wi-Fi standards (802.11n/ac/ax/be/Wi-Fi 7), security types (WPA3/WPA2/Open), vendor details, and estimated distance.
• Scan History & Comparison: Compare two scan batches side-by-side to track APs that appeared, disappeared, or changed in strength.

📝 LOGS — Site Surveys & Roaming Audits
Turn your phone into a powerful site-survey tool for coverage audits and dead-zone mapping.
• Survey Points: Walk through any building and record labeled signal snapshots. Save the location label, RSSI, channel, and custom notes.
• Roaming Events: Automatically log source/destination MAC addresses and timestamps when your device switches BSSIDs. Perfect for testing mesh networks or enterprise roaming logic.
• Pro-Grade Export: Export your structured data as clean CSV spreadsheets or plain-text reports to share with IT teams or analyze in Excel.

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🔒 PRIVACY FIRST
• 100% Offline Analysis: No data is ever sent to external servers. No accounts, no cloud sync, and absolutely no tracking or advertising SDKs.
• Permissions Transparency: Android requires Location permission to read Wi-Fi scans. Your actual geographic location is never recorded, stored, or transmitted.

⚙️ CUSTOMIZATION & SETTINGS
• Configurable RSSI sampling intervals.
• Modern UI with Light/Dark themes and Android 12+ Material You dynamic color palette.
• Granular data management—clear logs, samples, or caches independently.

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⚠️ TECHNICAL NOTE: This app utilizes the official Android Wi-Fi API and obeys OS scan frequency limits (approx. 4 scans per 2 minutes). It is not a hardware RF spectrum analyzer; values reflect what your device's radio driver reports.

Download Wi-Fi Analyzer: Signal Scan today and eliminate Wi-Fi dead zones for good!

What’s new

☑️ Firebase Analytics for core experience events: scan start/complete, channel filter changes, survey points, report export, scan history compare/delete.
☑️ Crashlytics bootstrap on app start with build_type, version_name, and version_code for faster crash triage.