APK Signer Pro

APK Signer Pro is a modern, open-source Android tool designed to make APK signing, verification, backup, extraction, and package management simple and convenient directly on your Android device.

Whether you are an Android developer, power user, or regularly work with APK packages, APK Signer Pro brings essential signing and package management tools together in one clean and intuitive application.

Sign and verify APKs with support for v1, v2, v3, and v4 signature schemes. The app also supports key rotation and cryptographic lineage through v3, as well as v4 streaming signatures with .apk.idsig files. For modern Android compatibility, APK Signer Pro can handle both 4 KB and 16 KB page alignment for native libraries and resources.

The built-in keystore management system supports JKS, PKCS12, BKS, BKS-V1, UBER, and BCFKS formats. You can import and inspect keystores, view certificate details such as the signing algorithm, validity period, subject, issuer, and SHA-256 fingerprint, and save key credentials for faster signing. A built-in Android debug key is also available for quick testing.

APK Signer Pro also makes it easier to work with installed applications. Back up and extract APKs from user and system applications, work with split APK and APKS packages, and handle APK, APKS, and XAPK files from a single application. Generated packages can be installed, shared, copied, or removed directly from the app.

Your signing activity is organized through a local history system with search and filtering, while SQLite and Kotlin Flow provide responsive local data handling. Signed packages and backups can also be organized automatically into dedicated folders under Downloads/APKSigner/.

The application is built entirely with Kotlin and Jetpack Compose and uses Material 3 Expressive for a modern Android experience. Dynamic Colors adapt the interface to your system color palette, while Light and Dark themes provide a comfortable experience in different environments. Responsive layouts, collapsing top app bars, live signing logs, and one-tap log copying make everyday workflows easier to follow.

APK Signer Pro is designed as a practical all-in-one toolkit for Android developers and advanced users who need reliable APK signing and package management directly from their device.

Interface language: English

Disclaimer

APK Signer Pro is an independent, open-source project. It is not affiliated with, endorsed by, or sponsored by Google LLC or any third party. All trademarks and product names are the property of their respective owners.

License

Apache License 2.0