How to protect Android APK from been crack? How to encrypt Android APK source code? How to make a protect shell for Android APK? Use APK Protect! APK Protect PC Edition is an utility software provides basic protect shell for Android APK. You can run it on PC directly without installation. APK Protect PC Edition provides effective Java protection and source code encryption, which will make your Android APK hard to crack. What you need to do is decompress the downloaded file, run apkcrypt.exe, select the APK you need to encrypt and click "ADD APK PROTECT." All these will take no more than 2 minutes and your APK will equiped with effective protect shell.