Be extremely cautious of any app asking for Accessibility or Device Admin rights if it comes from an unverified developer.

The only safe way to use the app is by downloading it directly from the Google Play Store.

Here is a report on the risks and functionality associated with such files:

KillApps is a legitimate utility for Android designed to close background tasks, free up RAM, and save battery. The "Pro" version is a paid upgrade that unlocks features like automated closing, system app management, and an ad-free experience.

Searching for "KillApps Pro Close All Apps Running Mod APK" typically leads to unofficial, third-party websites offering modified versions of the KillApps: Close all apps utility.

If you have already downloaded an APK, you can upload it to VirusTotal to check it against dozens of antivirus engines for hidden threats.

Modded apps do not receive official security patches from the Google Play Store, leaving your device vulnerable to newly discovered exploits. Safety Recommendations