About VaultSeal
VaultSeal is an offline-first, zero-knowledge encrypted vault designed to give you complete control and uncompromising privacy over your personal media, confidential documents, and private notes.
Every file is protected with authenticated AES-256-GCM encryption right on your device. Your master encryption key resides in memory only while actively browsing and is wiped the moment your vault seals or times out. With no cloud servers, no account logins, and zero remote tracking, your secrets stay strictly in your hands.
Features
Zero-Knowledge Cryptography
- Authenticated AES-256-GCM encryption on every stored item
- Master keys derived from your passphrase live in volatile RAM only
- Instant memory wipe on lock, app switch, or inactivity timeout
- Hardware-backed biometric authentication (fingerprint / face unlock) via Android Keystore
Dual-State Operations
- Sealed Ingest: Import photos, videos, clipboard text, and shared files directly into your encrypted vault without ever unlocking or decrypting existing data
- Unsealed Browsing: Unlock with your passphrase or biometrics to preview, organize, filter, and export files
- Secure in-app camera capture directly into encrypted storage
Flexible Navigation & View Modes
- Three view modes: High-density List View, Desktop-style Icons View, and Rich Large Preview Cards
- Folder management, favorites, and quick category filtering (Media, Files, Favorites, Recent)
- Persistent display preferences and on-demand thumbnail generation
Defense-in-Depth Privacy
- Screenshot & Recents Protection: Blocks unauthorized screenshots and blanks the app switcher preview
- Metadata Purifier: Strips sensitive GPS coordinates, device IDs, and EXIF tags before exporting images
- Clipboard Sentinel: Ingests sensitive copied text with automatic clipboard clearing
- Auto-Seal Timer: Locks and purges memory keys after customizable idle timeouts (1, 2, 5, or 10 min)
Storage Access Framework (SAF)
- Choose exact folder or micro-SD card locations for your encrypted containers
- Container files survive app uninstalls for easy backup and device transfers
- Foreground sync service for uninterrupted background encryption operations
Pro Features (One-Time Upgrade)
- Unlimited Vaults: Separate secured containers for work, finance, and personal media
- Stealth Mode: Disguise VaultSeal with alternative launcher icons on your home screen
- Break-In Alerts: Timestamped logs and tamper warnings for failed unlock attempts
- Outbound App Sandbox: Restrict which external apps are allowed to receive exported files
- 100% Ad-Free: Clean, distraction-free security environment
Privacy & Data Safety
✓ No data collected
✓ Zero cloud sync / 100% offline
✓ Authenticated AES-256-GCM encryption
✓ No account or email required
✓ Master keys wiped from RAM on lock
VaultSeal operates entirely offline on your device. There are no remote servers, no analytics trackers, and no third-party data sharing.
Full privacy policy · Terms of Service · Data safety details
