Signal Detector

Contains ads
8.64K reviews
Content rating
Everyone
1M+
Downloads
Content rating
Everyone
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About this app

Analyze various signals in real time: cellular network, Wi-Fi, Bluetooth, satellites, and magnetic field; monitor state data like noise, speed, and battery, presented clearly and visually through dynamic charts.

【Core Features】

1. Cellular Signal Analysis
Supports GSM, CDMA, WCDMA, LTE, and 5G NR. Displays signal strength, base station info, carrier, network type, and roaming status.
· Dynamic trend curve to visualize signal fluctuations
· IP, gateway, and DNS overview for quick reference
· Base station distance estimation
· Neighbor cell list to assess coverage quality

2. Wi-Fi Signal Analysis
Scans nearby Wi-Fi networks and detects signal strength, band (2.4 GHz / 5 GHz), channel, bandwidth, speed, and MAC.
· Distance and direction estimation to locate devices
· LAN device scanning to identify devices on the network
· DNS hijacking, ARP spoofing, and SSL anomaly detection

3. GPS Positioning & Tracking
Receives BeiDou, GPS, GLONASS, Galileo, QZSS, and IRNSS signals. Shows satellite count, signal-to-noise ratio, coordinates, altitude, and speed.
· Polar star chart showing satellite positions
· 3D accuracy confidence assessment
· Real-time speed and direction

4. Bluetooth Device Management
Scans headphones, smartwatches, car devices, and IoT devices, automatically classified by type.
· Bluetooth distance estimation to find lost devices
· Paired device list and nearby device discovery
· Real-time device info (name, MAC, signal strength)

5. Environmental Sensor Monitoring
Integrates sensor data: magnetic field, temperature, humidity, pressure, light, accelerometer, and gyroscope.
· Digital compass (based on magnetic field sensor)
· Magnetic field strength monitoring with threshold alerts
· Temperature and humidity comfort assessment

6. Environmental Noise Detection
Real-time decibel level measurement.
· Dynamic decibel curve for noise level
· Historical data review of noise distribution
· Noise level classification alerts

7. Network Diagnostic Tool Suite
· Network check: flight mode, SIM, Wi-Fi/cellular data, network quality, PING packet loss, DNS speed, HTTP/HTTPS connectivity, and jitter; automatic scoring and recommendations
· PING test: IPv4/IPv6 latency, jitter, loss, and success rate assessment
· Custom DNS test for any server
· Traceroute: shows IP, latency, and node names step by step
· Single site speed test by URL
· Cyclic speed test for multiple sites

8. Battery & Hardware Monitoring
◆ Battery
· Real-time current, power, and voltage monitoring with trend charts
· Smart estimation of remaining charge/discharge time
· Battery health analysis: cycles, capacity, and temperature
· Automatic charging source detection
· Background monitoring and foreground notifications

◆ Hardware
· CPU architecture and model identification
· Real-time frequency and core temperature monitoring
· Abnormal frequency throttling alerts

【Use Cases】
· Find a stronger signal in elevators and basements to reduce dead zones
· Detect DNS hijacking and ARP spoofing on public Wi-Fi for security
· Analyze position and manage Bluetooth devices
· Find lost Bluetooth headphones and smartwatches
· Monitor noise levels to improve your environment
· Quickly troubleshoot network issues and save time

We turn complex data into clear, dynamic charts — let's explore the visible digital world together!
Analyze cellular, Wi-Fi, GPS, Bluetooth, noise, sensors & hardware.
Updated on
Oct 28, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    App info and performance
  • Data isn’t encrypted
  • Data can’t be deleted

Ratings and reviews

8.47K reviews
Richard Champalbert
April 27, 2024
This app works great! I use it to find my Bluetooth earbuds. With the continuous tracking, I can wander around, watching the signal strength change and zero in on the tiny earbud. Pro tip: if the signal does NOT change, it's probably ON you! It does a bunch of other things, but I don't use those. It's worth it, just for the earbud finder.
668 people found this review helpful
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David walsh
January 13, 2024
Great app once you get the hang of it. A bit technical but gives real helpful information I'd either your wifi or mobile phone is having signal problems. You Really have to play with it at first. Don't be afraid to push any screen hyperlinks, your device won't explode. The best app for wifi and mobile signal information. Tower location, signal strength and speed, technical advice on security and other features. Like I said don't be afraid to push on. Anything that's how you get the hang of it.
536 people found this review helpful
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Jim Harris
October 19, 2023
Interest app but: (1) digital sensor readings are too rapid to be useful. Suggestion: allow the user to select the update rate and average the signals over that interval. (2) Cellular signal strength data is virtually useless as the provider names are not provided. (*WHICH* of these providers is giving the best signal?) (3) There should be something somewhere that describes the units and values for people who aren't signal engineers. (4) WiFi SSID information is missing in many cases.
372 people found this review helpful
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What’s new

1. Web speed test optimized: more accurate results and smoother loading
2. WiFi experience fixes: fixed channel calculation issues, added 2.4GHz/5GHz band display
3. Noise detection upgrade: supports home/office/outdoor multi-scenario evaluation
4. Battery monitoring new upgrade: real-time current/voltage/power viewing