End to End File Encryption Tool (ETEFET) is a secure file manager that uses PGP for encryption.

√ Store your sensitive documents in ETEFET vaults, secure containers that can contain folders and files.
√ Choose the behavior that most accurately suits your needs. Your private key may be deleted from device's RAM the second you switch focus from the app or be stored in it until manual exit.
√ View your documents directly in the app. ETEFET currently supports all major file types: text, formatted text, PDF, Apple iWork and Microsoft Office documents, all kinds of photo, audio and video files and archives.
√ ETEFET supports nested folders, so you can organize your data the way you are accustomed to.
√ Create and unzip archives with just one click of a button.
√ Decrypt your documents and share them with other apps in an instant.
√ Import media, web URLS, text and any kind of files directly into ETEFET through a convenient Share Extension.*
√ Easily backup your documents and key pairs if you need to change your device.

ETEFET utilizes 6 comprehensive layers of security:

1. Files stored in ETEFET are under iOS Data Protection.
2. Your vaults list is encrypted with an 8-digit PIN that is entered on the random digital keyboard. Each time you open the app, you will see different digits arrangement as a preemptive measure against prying eyes.
3. Your private key is encrypted whether you have set a password or not. If you have not set the password, it has been generated automatically and encrypted with an additional key. That key is stored in the Secure Enclave, and hence is inaccessible without proper biometric authorization even in case of an attack on your keychain.
4. Your directory structure is encrypted: you can name your files with their real names. Even if an attacker gets access to ETEFET's folder, all s/he would be able to see would be a bunch of documents with meaningless names.
5. Your files can be destroyed in an instant. Just type the destructor-PIN on the main auth screen or in the private key password window, and everything will be deleted, including your keychain entries and the additional key stored in the Secure Enclave.
6. Just like ETER, ETEFET never accesses the Internet. You can easily check that in your device's settings: there is no ETEFET entry in the last section, because the software does not require any permissions including the use of cellular data.

*KNOWN LIMITATIONS:
-Import of large files (>260MB)

ETEFET does not make internet connection hence it is unable to send regular crash reports, and that is why direct feedback will be tremendously appreciated and taken into account for the next releases.