ParaCryptor

This app encrypts your private or secret files in your mobile device. The main function (except encryption) is to minimize the probability of access to decrypted data by third parties. It is achieved through the removal of the decrypted files at the following events:
* after 10 seconds (by default) after screen off;
* during turning off your device;
* after device boot completed.
For example, you are viewing a private data from decrypted file. If someone suddenly tries to take away your device, you can lock the screen by pressing a hardware button on the device, and after 10 seconds (by default) all decrypted files will be deleted. If you do not have time to press the button, the files will be deleted after 10 seconds after usual lock screen.

Features:
* Encrypts with AES 256 bit key cipher in CBC mode.
* Deletes files safely. Data are wiped before file deletion from disk.
* You can call the app from any file manager.
* Kill app that opened decrypted file.
* Deletes decrypted files after screen off, during shutdown and after boot completed.
* Simple embedded file explorer. It includes special icons. Encrypted files have a blue icon. Decrypted files have a red icon (danger). Other files have a gray icon.

Permissons:
* Read from and write to SD card.
* Close other apps (used to kill app that opened decrypted file).
* Start up by device boot completed (used to delete encrypted files afte boot completed).

App is full free, no any payments, no ads.