The provided link for download ( LINK ) seems suspicious. Downloading APK files from unverified sources can pose a risk to your device's security, as it may contain malware or other malicious code.
Always prioritize your device's security by downloading apps from trusted sources, such as the Google Play Store, and be cautious of apps that make unsubstantiated claims.
Instead, you may want to explore alternative apps that offer metal scanning features using your device's built-in sensors, such as magnetometers. These apps are more likely to be scientifically accurate and safe to use.