The Android app iShredder™ Android Government edition comes as an APK file. The Government edition is the most powerful military data eraser app which securely deletes data leaving them irrecoverable by using certified erasure algorithms.
It generates a report which you could use for the audit trail, the proof of erasure. It provides auditable assurance that all data was sanitized in compliance with published standards such as GDPR, UK Government InfoSec No. 5, U.S. DoD, NIST 800-88.