Black Vault User Guide

Official documentation for Black Vault by Jutt Cyber Tech — setup, encryption, app lock & more.

Welcome to the official documentation for Black Vault by Jutt Cyber Tech. This guide covers everything from initial setup to advanced security features, ensuring you get the maximum privacy protection from our software.

Critical Warning: Zero-Knowledge Architecture

Black Vault uses true 256-AES local encryption. We do not have a backdoor. If you forget your Master PIN and lose your recovery email access, your data is permanently irretrievable. Jutt Cyber Tech cannot reset your password or recover your files under any circumstances.

1. Getting Started

Setting Up Your Vault

Launch the Black Vault application.
You will be prompted to create a Master PIN (or Pattern). Make sure it is memorable but impossible to guess.
Set up a Recovery Email. This is highly recommended as it is the ONLY way to reset your PIN if you forget it.
Grant the necessary storage permissions so the app can encrypt and hide your files.

2. The File Vault

Hiding Photos and Videos

To secure media files, open the Vault, navigate to the Photos or Videos section, and tap the + (Add) button. Select the files from your public gallery. Once imported, Black Vault encrypts the files and removes the originals from your public gallery.

Exporting Files

If you wish to make a file public again, select it inside the Vault and tap Unhide / Export. The file will be decrypted and restored to its original location on your device.

3. App Lock (Android Only)

The App Lock feature prevents unauthorized access to other applications on your device (e.g., WhatsApp, Banking apps, Social Media).

Navigate to the App Lock tab.
Grant Usage Access and Display Over Other Apps permissions (required for the lock screen to appear).
Toggle the switch next to the apps you wish to secure.
You can choose to unlock these apps using your Master PIN or your device's Fingerprint/Face unlock.

4. Advanced Security Features

Disguise Mode (Calculator / Clock)

You can change the Black Vault app icon and interface to look like a standard system calculator or clock.

Go to Settings > Disguise App.
Select your preferred disguise (e.g., Calculator).
To access the real Vault while disguised as a Calculator, type your Master PIN into the calculator and press the = (equals) button.

Intruder Selfie

If someone tries to guess your PIN and fails multiple times, Black Vault will silently take a photo using the front-facing camera.

Go to Settings > Intruder Selfie and enable the feature.
You must grant Camera permissions for this to work.
Photos of intruders are stored securely inside the Vault under the "Intruders" section.

5. Plans & Pricing

Black Vault is available in four tiers to match every user's privacy needs. All plans are available on Android via the Google Play Store.

Free — $0.00 (Forever)

The Free plan gives you everything you need to get started with no cost, ever.

Unlimited File Storage — Store as many photos, videos, and documents as your device allows.
Sandbox Data Storage — All files are stored in a secure, isolated container inaccessible to other apps.
100% Ad-Free — No ads, no trackers, no third-party scripts. Ever.

Basic — $0.99 (One-Time)

A one-time purchase that unlocks powerful stealth and encryption features.

Everything in the Free plan.
Calculator Disguise Mode — Disguise the app as a standard calculator on your home screen. Enter your Master PIN and press = to access the vault.
AES-256 Standard Encryption — Military-grade encryption protecting all your hidden files.

Standard — Coming Soon

The Standard tier is currently in development. It will include all Basic features plus additional advanced disguise options and enhanced security layers. Pricing to be announced.

Premium — Coming Soon

The Premium tier will be the ultimate privacy suite from Jutt Cyber Tech. Full details and pricing will be announced on our official social channels.

6. Sandbox Data Storage — How It Works

Black Vault stores all your files inside an Android App Sandbox — a completely isolated private directory that only the Black Vault app can access.

No other app on your device can read, write, or delete your vault files.
System file managers and photo galleries cannot see your hidden files.
Even if your device is connected to a PC via USB, the sandbox directory is not accessible.
Files are only accessible when you unlock the vault with your Master PIN, Pattern, or Fingerprint.

Important: Uninstalling the App

If you uninstall Black Vault without first exporting your files, all sandboxed data will be permanently deleted by the Android system. Always export your important files before uninstalling.

7. Troubleshooting

I forgot my PIN!

If you set up a Recovery Email during onboarding, enter an incorrect PIN three times. An option to "Forgot Password" will appear. Tap it, and a reset code will be sent to your email. If you did not set a recovery email, your data cannot be recovered.

The App Lock is delayed or getting killed

Some Android manufacturers (like Xiaomi, Huawei, or Samsung) aggressively kill background processes to save battery. To ensure App Lock works instantly:

Go to your device's Settings > Apps > Black Vault > Battery.
Set the battery restriction to Unrestricted or No Restrictions.
Lock the app in your recent apps menu.