Used Metal Detector - Coin Scanner for Android?
Editors’ Review
Metal Detector - Coin Scanner from HKL Game Studio turns an Android phone into a handheld exploration toolkit for hobbyists and collectors. The app pairs real-time metal sensing with an image-based coin scanner and rock identifier to locate and document finds during fieldwork. Key capabilities include visual EMF graphs, auditory and vibration alerts, a stud finder and a history log for saved scans. It suits outdoor enthusiasts and collectors who want a single mobile discovery tool.
How the app detects objects and identifies finds
The app uses the phone's magnetic sensing and camera-based analysis to perform two linked tasks: detection and identification. Detection produces live EMF indicators and graph traces that show field intensity, while the coin scanner captures images and matches them to an internal database to provide names, origins and historical notes. The included rock and mineral identifier processes photos to suggest specimen types, and a stud finder searches walls for metal signatures.
What to expect from system impact during active use
Running real-time graphs alongside camera-based scans engages both sensor polling and image processing, so battery and resource use rise during extended sessions. The app runs on Android and relies on available sensors for continuous sampling, and the history log stores past scans which increases local storage use over time. These behaviors make short detection sweeps preferable to continuous, camera-heavy operation for longer outings.
Is the tool safe for field and home use?
Magnetometer scanning reads ambient magnetic fields rather than writing to system hardware, so it does not alter device firmware. The coin and rock features require image capture, and the app maintains a history log to archive discoveries; users should review stored entries if privacy or storage is a concern. The stud finder reports magnetic signatures of metal behind walls and does not interface with building wiring beyond detection.
Who can operate it and how much skill is required?
The app presents detection data as readable graphs and alerts, lowering the barrier for casual users who want simple scans. Collectors and amateur geologists gain more when they frame coins and specimens correctly for the camera, since identification accuracy depends on photo quality. Reviews note the package's versatility, so the tool suits both beginners seeking guided scans and hobbyists who use the saved log for cataloging.
Pros
- Combines metal detection, coin identification and rock scanning in one app
- Provides visual EMF graphs plus auditory and vibration alerts
- Coin scanner supplies names, origins and historical information
- History log saves and timestamps previous scans
Cons
- Detection quality depends on the phone's magnetometer hardware
- Non-ferrous targets such as pure gold may not register reliably
- Rock and coin ID accuracy depends heavily on photo framing
- Stud finder only detects metal by magnetic signature, not material type
Bottom Line
Practical mobile option for hobbyists, with hardware-dependent limits
Metal Detector - Coin Scanner is a practical option for hobbyists and collectors who want combined detection and identification on a single Android device. Its main trade-off is reliance on the phone's sensors for detection quality, which can vary between devices; expect identification accuracy to track camera and magnetometer quality. Recommended. Test the app in a low-metal environment before serious field use to confirm calibration and storage settings.
Used Metal Detector - Coin Scanner for Android?
