HDShredder by Miray Software can permanently delete your app data and ensure that your sensitive information is not at risk.
You can also use HDShredder ISO to create an unit Bootable CD/USB.
The advantage of a bootable software is that you can use it on any other system for some erasure.
HDShredder reliably erases the contents of hard drives and other mass storage media. It can also be applied to individual partitions and the user can choose to do the deletion according to international security standards. HDShredder works independently of partition layout, file system and operating system.
The tool has a very intuitive interface (UI) and is very easy to use.
HDShredder Free is as capable and efficient a disk cleaner as most users need. Since it's free software, you have nothing to lose except the files you have already deleted. If you want to sell, donate or dispose of an old one computer or hard drive, run HDShredder first.
Η better safety it's a matter of yours alone.
Download the app in the format you want
https://www.miray-software.com/download/hdshredder.html