Privacy Policy - FrameChord

1) Who we are

FrameChord is developed and provided by Saifullah Ahad ("we", "us", "our"). Developer portfolio: https://saifullah.ai.

2) Zero network access and offline architecture

FrameChord is a 100% offline, on-device audio alignment and timing drift verification tool. The application does not request the Android INTERNET permission or ACCESS_NETWORK_STATE permission. Both have been completely removed from the application manifest. The app is technically incapable of sending data, telemetry, analytics, or crash reports over any network.

3) Information handling & local storage

FrameChord does not collect, transmit, sell, or share personal data or recordings. All data entered into or generated by the app stays entirely on your local device:

• Non-destructive import: Selected audio and video files are copied into the app's private sandbox storage for analysis. Your original files on your device or SD card remain completely untouched and unmodified.
• Cryptographic integrity: The app computes SHA-256 hashes of imported copies to verify file structure, avoid duplicate processing, and guarantee data consistency. Hashes are stored only in your local session database.
• On-device acoustic analysis: Decoded PCM waveforms, short-time Fourier transform features, cross-correlation matrices, and drift parameters are processed entirely using your device's local CPU. No sound or feature representations are ever uploaded.

4) User-directed file access and exports

FrameChord accesses files only when you explicitly select them using Android's system file picker (Storage Access Framework):

• Media selection: When you choose to import a reference recording or candidate takes, you choose the files directly through Android's system document picker. FrameChord reads only the specific files you authorize.
• Report and bundle export: When you export synchronization notes, tabular timing data, or JSON alignment records for your video editor, you choose the destination location via the system document picker. FrameChord writes only to your specified destination.

5) Third-party SDKs and tracking

FrameChord contains zero third-party analytics libraries, advertising trackers, remote monitoring frameworks, or cloud synchronization services. No account creation, login, or personal profile is required to use the app.

6) Data retention and deletion

You can delete individual sessions or remove imported clip copies at any time within the app's interface. Deleting a session permanently purges its private working copies and local database records. Clearing app storage in Android Settings or uninstalling FrameChord immediately and completely removes all app-owned data from your device.

7) Operating boundaries & disclaimer

FrameChord identifies shared moments and checks timing drift based on recorded acoustic sound. It is a timing helper for editors, not an empirical forensic instrument, and does not certify simultaneous visual camera capture or render finished video productions.