While the original app claims local processing, a modded version may have altered code that redirects your scanned (and potentially sensitive) documents to third-party servers.
arm64-v8a is the instruction set for modern 64-bit Android devices. Key Features of MDScan + OCR
Modified APKs can contain hidden spyware, keyloggers, or backdoors that are not present in the original software.
Because this is a "Patched Mod" distributed outside official stores, you should be aware of the following risks:
Automatically identifies document borders and corrects perspective distortion.
You will not receive security patches or new features through the Google Play Store.