_best_: Lucky Patcher Signature Verification Killer
If you are rooted, the "Core Patch" Magisk module is a modern, safer alternative. It hooks the signature check only during installation (not runtime) and works systemlessly, meaning you can disable it instantly without re-flashing your ROM.
The "Signature Verification Killer" is a system-level patch that disables the Android OS's ability to verify the authenticity of an application's digital signature. This allows users to install modified (cracked) apps or downgrade versions that would normally be blocked by the system due to a "signature mismatch". Primary Functions Signature Status "Always True": lucky patcher signature verification killer