- X-Signer is a lightweight Android app designed for signing APK/AAB files with various signature schemes (v1, v2, v3, v4). It provides an easy-to-use interface to help users securely sign their apps without hassle.
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Supports signing APKs and AABs with multiple signature versions (v1, v2, v3, v4).
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Option to enable both v1 + v2 signatures or all signature versions (v1, v2, v3, v4).
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Local storage for device data without cloud integration.
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Encrypts all locally stored data for security. (Well not implemented yet :3)
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Only some basic device informations are collected (e.g., model, Android version, brand), but no personal data is ever collected.
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Uses Google Firebase solely for update checks.
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Install the App Download and install the APK on your Android device.
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Grant Runtime permissions Grant the all files access to the app in order to work with files in your device storage.
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Select the APK/AAB file Choose the APK or AAB file you want to sign or pick an app from your installed apps.
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Select Signature Versions Choose the desired signature versions (v1, v2, v3, v4) from the pre-sign dialog.
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Sign the APK/AAB Tap the 'Sign' button to sign your file. a snackbar popup will show the signed file path.
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Storage Access: Required for reading and saving APK/AAB files.
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Internet Access: Used only for checking app updates via Google Firebase.
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Installed packages list access : Used to fetch installed apps lists to extract the APK file from the selected app for signing.
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The app does not collect or share any personal data.
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All data is stored locally and encrypted for security.
This project is licensed under the custom License - see the LICENSE file for details.