iShredder is described as ', is a secure data erasure technology introduced in 2011 by the company ProtectStar™ and the German security expert Chris Bohn' and is a File Shredder in the Security & Privacy category. There are more than 10 alternatives to iShredder for Windows, Android and PortableApps.com. The best alternative is Eraser, which is both free and Open Source. Other great apps like iShredder are Permadelete (Free, Open Source), Alternate File Shredder (Free, Open Source), Active@ KillDisk (Freemium) and O&O SafeErase (Paid).
This program offers the possibility to finally delete files and/or folders (no recovery possible). The program also can overwrite the free space on a drive, which means, that already deleted files cannot be restored, too.
Because it's been deleted from your hard drive, doesn't mean it's gone forever. As long as the information was not overwritten, anyone can restore it at any time. It gets even more complicated, if a computer has been resold or given away.
Over time, many very private or business-critical files accumulate on a computer. What happens to these files when you no longer need them? Moving to the Recycle Bin is far from enough to really protect your privacy.
Shreddit is a data eraser app that effectively deletes confidential data from your Android device. It does so by deleting the files/data and overwriting on the space occupied by them. The data is erased in such a manner that no recovery tool can recover it.
Aiseesoft FoneEraser is the most powerful security tool to preserve your privacy through erasing sensitive data or all other data on the iPhone/iPod/iPad. You can select the erasing level and remove the data from your iPhone and iPad simultaneously.