Capture
Camera or gallery input, live edge detection, filters, and multi-page scanning.
Private Android document scanner
VaultScan
Scan papers, extract searchable text, set renewal reminders, and keep every page inside a biometric-protected encrypted vault.
- Local-first
- Works without a cloud account
- OCR search
- Titles, tags, dates, and recognized text
- Secure Cloud
- Optional end-to-end encrypted backup
Built from the app flow
From scan to vault without losing control
The website mirrors the screens and features already present in the Android code: scanner capture, OCR review, encrypted storage, document search, alerts, and cloud backup settings.
Review
OCR extracts names, numbers, dates, and expiry candidates before saving.
Encrypt
Pages are compressed, encrypted, indexed, and protected by the device vault.
Act
Search inside documents, star files, share safely, and get expiry reminders.
Feature set
A scanner, vault, and reminder system in one app
The content below is grounded in the Android modules and current Compose screens, not a generic scanner checklist.
Advanced document scanning
ML Kit and OpenCV scanner paths, AI segmentation support, crop tools, filters, and quality controls.
Encrypted OCR search
Search by title, tag, dates, and recognized text after decrypting only inside the unlocked app session.
Expiry intelligence
Detects expiry dates, asks for confirmation, then schedules renewal reminders while respecting vault privacy.
Biometric vault lock
Hardware-backed keys, auto-lock timing, app-switcher privacy, and a dedicated unlock flow.
Organized document vault
Folders are tags, with starred documents, trash recovery, page viewing, and per-document sync badges.
Controlled sharing
Share selected documents or pages through Android share sheets, with redaction and export options in the UI.
Rendered app states
Screen previews from the current product flow
These static previews recreate the live Compose routes from the app: home vault, scanner, OCR review, and settings. They give the Firebase site product visuals even before a store listing is attached.
Security model
Plaintext stays off disk and out of the cloud
VaultScan is designed around opaque encrypted blobs. The app can back up and restore documents without handing readable files to Firebase, Cloudflare, or a cloud account.
Android app
Encrypts pages on device
to
Firebase broker
Auth, App Check, Firestore index
to
Cloudflare R2
Stores encrypted document blobs
Recovery passphrase
The backup keyset is sealed under the user's passphrase, separate from cloud sign-in.
Short-lived URLs
Cloud Functions mint scoped presigned URLs so the app never ships R2 credentials.
Memory-only previews
Decrypted thumbnails are kept out of disk cache and cleared when the vault locks.
Optional backup
Secure Cloud keeps the local vault free
Local scanning remains account-free. Secure Cloud adds encrypted backup, automatic sync, and restore on a new device after Google sign-in and a recovery passphrase.
Secure Cloud
Encrypted backup, sync, and restore
$14.99
per year in current app copy
- 50 GB encrypted storage plan copy
- Incremental backup after document changes
- Restore with signed-in account and passphrase