Check the permissions the app requests; a sound booster should only need access to audio settings, not your contacts or location. How to Install the 1.14 MB APK
Use a mobile security app to scan the file after downloading. volume-sound-boost-v1.7.3-1.7.3-android-apk-app-1.14-mb
However, because this is an APK file and not a standard Play Store download, you should always: Check the permissions the app requests; a sound
Enable "Install from Unknown Sources" in your Android settings. Check the permissions the app requests