<p>A high performance free space eraser, the first on Android. Use before selling your device, after enabling encryption, or after deleting many apps/files.</p> <ul> <li>Due to how flash drives work and the partition layout of devices, it'll never be possible to fully fill the drive.</li> <li>Warning! Excessive use WILL destroy your device!</li> </ul> <p>What is free space erasing?</p> <ul> <li>Typically when you delete a file it is not really deleted, it is merely removed from the file system's index.</li> <li>A free space eraser tool such as this one fills the remaining space of your drive with random noise files and then deletes them.</li> <li>This process makes deleted files for the most part irrecoverable.</li> </ul> <p>What is file table filling?</p> <ul> <li>On some file systems, deleted file names can still be accessible in backup index databases.</li> <li>By creating many tens or hundreds of thousands of empty files with different random names you can push out the old files.</li> <li>This process makes deleted file names for the most part irrecoverable.</li> </ul>