Downloading and using "auto sign" tools from untrusted, third-party, or unknown sources carries significant risks:
The official IDE for Android development, which has built-in, secure signing capabilities [1]. Download Auto sign apk
from Google to ensure the security of your apps and device. To help you further, are you looking to: Sign a new app you've developed? Re-sign an existing APK to modify it? Downloading and using "auto sign" tools from untrusted,