FAQ

Frequently Asked Questions

🚀 Getting Started

QuietStor is a privacy-first file manager for Android. It helps you browse your files, analyze storage usage, and protect sensitive files in an encrypted vault.

  • ✅ Clean file browsing interface
  • ✅ Storage analysis by category
  • ✅ Military-grade encrypted vault (AES-256)
  • ✅ 100% offline - no data leaves your device

Yes! Core features are completely free: file browsing, storage analysis, and vault (limited to 50 files).

Premium unlocks unlimited vault files and priority support.

No. QuietStor works 100% offline. Your files never leave your device.

We don't have servers. We don't collect data. We can't see your files.

🔐 Private Vault & PIN

The Private Vault is an encrypted space where you can store sensitive files:

  • 🔐 Encrypted with military-grade encryption (AES-256-GCM)
  • 🔑 Protected by your 6-digit PIN
  • 👆 Accessible with fingerprint (optional)
  • 👁️ Hidden from other apps and file managers
Your files will be permanently lost.

This is not a bug — it's a security feature:

  • ❌ We never see your PIN
  • ❌ There's no "Forgot PIN" option
  • ❌ We can't help recover it

How to protect yourself:

  • ✅ Choose a PIN you'll remember
  • ✅ Enable fingerprint as backup
  • ✅ Create a vault backup (.qsv file)

📱 Changing Devices

You have two options:

Option A: Direct Transfer (Recommended) 👍

If you still have your old phone:

📲 Direct Transfer via QR Code

847 291
Old Phone
Encrypted transfer
New Phone
1 Scan QR
2 Transfer
3 New PIN
4 Done! ✅

Option B: Restore from Backup

If your old phone is lost or broken, you need a .qsv backup file created beforehand.

⚠️ No backup = No recovery. Always create backups!

💾 Backup & Export

  1. Go to Settings > Export Vault Backup
  2. Enter your PIN
  3. Create a backup password (different from PIN!)
  4. Choose where to save the .qsv file
  5. Store this file safely (Google Drive, USB, etc.)

🛡️ Security & Privacy

QuietStor uses industry-standard security:

  • Encryption: AES-256-GCM (military-grade)
  • Key storage: Android Keystore (hardware-backed)
  • PIN hashing: PBKDF2 with 600,000 iterations
  • Biometrics: Android BiometricPrompt (Class 3)

None.

  • ❌ No analytics
  • ❌ No crash reports with personal data
  • ❌ No usage tracking
  • ❌ No advertising
  • ❌ No network requests

🔧 Troubleshooting

This is a security feature. After failed attempts:

  • 3 failures → 30 second wait
  • 5 failures → 2 minute wait
  • 10 failures → 30 minute wait

Wait for the timer, then try with your correct PIN.

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