Use a mobile antivirus or a site like VirusTotal to check the APK before opening it.
Downloading apps from outside the official store carries risks. To keep your device secure:
Get the latest features directly from the developers before they clear the Play Store's review process. Safety Tips for APK Downloads
Go to your Android Settings > Security (or Privacy) and toggle on "Install from Unknown Sources."
Updates made on your phone reflect on your PC/Cloud and vice versa.
Optimized to run in the background without draining your phone.