SyncedAuth

A TOTP (Time-based One-Time Password) authenticator for Android, built entirely with Jetpack Compose.

Features

• TOTP codes: 6/8-digit codes with live countdown ring and "next code" preview
• QR setup: scan two-factor setup QR codes (otpauth://) or Google Authenticator transfer QR codes (otpauth-migration://) with the camera, or decode a QR from a screenshot; HOTP and SHA-256/512 entries are skipped with an explanation
• Real brand logos: every known service shows its authentic logo, bundled in the APK (no network)
• Pin & reorder: pin accounts to the top; long-press a card to drag-reorder
• Swipe actions: swipe a card left to delete, right to pin/unpin; deletion asks for confirmation
• Search: instant filtering with match highlighting
• Import/Export: backup and restore accounts as JSON via the system file picker
• Light & dark theme

Project structure

app/src/main/kotlin/com/harouat/syncedauth/
├── MainActivity.kt          # Entry point + simple home/add/scan routing
├── MainViewModel.kt         # Account list state, reorder, import/export
├── data/                    # Account model, storage, backup codec
├── otpauth/                 # QR payload parsing (otpauth:// + GA migration protobuf)
├── totp/Totp.kt             # TOTP (HMAC-SHA1) implementation
└── ui/
    ├── theme/               # Design tokens (colors, typography)
    ├── components/          # CodeCard, ServiceTile, CountdownRing, buttons…
    └── screens/             # HomeScreen, AddAccountScreen, QrScanScreen

Brand assets live in app/src/main/res/ (drawable/ic_brand_*.xml vector marks, drawable-nodpi/brand_*.png full-color logos).

Build

./gradlew :app:assembleDebug
adb install -r app/build/outputs/apk/debug/app-debug.apk

Credits

Brand logos: Simple Icons (CC0) and gilbarbara/logos (CC0). Drag-to-reorder uses Reorderable by Calvin Lau.

License

SyncedAuth is released under the MIT License. Brand names and logos are trademarks of their respective owners and are not covered by this license.