# Duplicate Inspector for Android 1.3.1 verification summary

Release date: July 31, 2026

## Verified release facts

- Final signed APK installed successfully on an Android 16 emulator.
- A signed in-place update to version code 5 succeeded on a connected Android
  device; populated preference migration was not exhaustively tested.
- APK Signature Scheme v2 and v3 verification passed with one signer.
- Release manifest, package, version, API levels, file size, and checksum were
  inspected.
- Three automated tests completed with zero failures and zero errors.
- Release lint reported zero errors and 34 existing non-blocking localization
  or style warnings.

## Manual behaviour checked

- Automatic selection across overlapping duplicate groups.
- Manual selection of the suggested keeper and all files in a group.
- Synchronized checkbox state for files appearing in overlapping groups.
- Normal permanent-deletion confirmation.
- Stronger warning when no copy would remain.

## Qualifications

This summary is engineering verification, not a security certification. No
claim is made that the app finds every duplicate, prevents data loss, is
malware-free, or is approved by Google Play or Play Protect. Permanent deletion
cannot be reversed by Duplicate Inspector.