apk-signer

Fast package signing and keystore management in one tool

apk-signer is a compact, developer‑oriented utility that focuses on one job and does it remarkably well: applying proper cryptographic signatures to installation packages directly on your device. If you build or modify apps on the go, this tool can quickly become an essential part of your workflow.

The core feature is straightforward signing support, including the modern V2 signing scheme used by recent system versions. That means packages you sign are more likely to install and run correctly on up‑to‑date devices, without mysterious verification errors. The interface is functional rather than flashy, but once you’ve set up your keys, signing a build is only a few taps away.

Key management is another strong point. apk-signer lets you import and export existing keystores, so you can carry your trusted keys with you and keep signatures consistent with your desktop environment. Unlocking the Pro version adds the ability to create new keystore files directly in the app, plus theme support if you prefer a darker or lighter workspace.

This is clearly a tool built with power users and developers in mind. Beginners may find some of the terminology (certificates, keystores, schemes) a bit intimidating, and pro features are paywalled. The app also isn’t available in every region, which can be frustrating if you’ve come to rely on it.

Still, for anyone who needs reliable signing and practical keystore handling on a handheld device, apk-signer is focused, efficient, and backed by a developer who openly communicates limitations and support options.