About this app

=== Metal Sniffer: Metal Detector ===
Metal Sniffer is a portable metal detector. By detecting nearby electromagnetic fields using the phone's built-in magnetometer/compass, you can locate nearby metal and magnets. You can also use it to find metallic studs and wiring behind walls. Depending on your phone, you can use it to detect metals up to 30cm away, and magnets from far, far away! Note that household equipment like TVs, and computers or even your phone case can affect readings.

Readings are separated per dimension, and is given in the unit of your choice (Tesla, Gauss, or Gamma), and combined to give a scalar reading. You can set a threshold at which the phone will vibrate when a critical reading has been reached.

You can also see a reading trend through the graph, or switch to the compass mode to find the direction at which the current is coming from! You can also record the readings to a .csv file for tracking or research.
 
===How to use this app?===
Very simple, just move the app around and read the measurements, if the magnetic field readings go over a critical level, the phone will vibrate, meaning a ferromagnetic material is nearby.

If the readings aren't getting updated, make sure your phone is equipped with a magnetometer.

If the readings seems to be off, it means that your sensors needs to be re-calibrated, click the re-calibration button (refresh icon) for instructions.

===REVIEWS===
Metal Sniffer: Leveraging your Android’s magnetic sensors to search for metal:
http://www.androidauthority.com/metal-sniffer-app-review-94472/

Metal Sniffer Brings Polished Metal Detection to Android:
http://www.xda-developers.com/android/metal-sniffer-brings-polished-metal-detection-to-android/

Metal Sniffer Is Hands Down The Best Metal Detector App For Android:
http://www.redmondpie.com/metal-sniffer-is-hands-down-the-best-metal-detector-app-for-android/

More video:
http://www.youtube.com/watch?v=J-mjMuIHhrU

If you like the app, please take the time to rate it & share!

===Features===
-Fun Metal Detector
-Displays the x,y,z components of the magnetic field.
-Works through walls! Detect hidden electrical wires.
-4 Sensor speeds and 3 different units.
-Export the data to a CSV file, make cool charts.
-Compass-like arrow to point out the direction of the source of the magnetic field
-Vibration alarm
-Free (Ads can be disabled in the settings)
-Option to force screen on to prevent screen from closing
-A historical chart
-Optimized for Ice Cream Sandwich/Holo theme
-Russian, Spanish and Dutch translations
-Tutorial (only on Android 4.0+) when app is first launched.

===Notes===
-Works on 2.1 and up!
-Other languages coming soon.

===Permissions===
VIBRATE
Used for vibration when level has reached a set threshold.
WRITE_EXTERNAL_STORAGE
Used to save .csv records to SD card.
INTERNET/ ACCESS_NETWORK_STATE
AdMob ads.

Bugs? Please e-mail me by clicking the link below.

New features

0.7.4- bug fixes
0.7.3- More bug fixes

0.7.0 - Added compass-like arrow to point the source of the magnetic field (or at least try to...). Optimization changes. Tutorial (Android 4.0+) when app is first launched. Ads.
Permissions:
VIBRATE
Used for vibration when level has reached a set threshold.
WRITE_EXTERNAL_STORAGE
Used to save .csv records to SD card.
INTERNET/ ACCESS_NETWORK_STATE
AdMob ads.

App Permissions

Allows access to the vibrator.
Allows an application to write to external storage.
Allows applications to open network sockets.
Allows applications to access information about networks.
Allows an application to read from external storage.