Privacy Policy - Desaxuste

1) Who we are

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

2) Zero network access and offline architecture

Desaxuste is a 100% offline, on-device mathematical consistency verification application. The application does not request the Android INTERNET permission or ACCESS_NETWORK_STATE permission. The app is technically incapable of sending data, telemetry, analytics, or crash reports over the network.

3) Information handling & local storage

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

• Report Workspaces: Tables, counts, categories, and assumptions you review are stored only within the app's encrypted local database.
• Encrypted Storage: App data is encrypted at rest using AES-GCM encryption with cryptographic keys managed by Android's hardware-backed Keystore.
• App Lock & Biometrics: You may optionally configure a dedicated App PIN or enable biometric unlock (fingerprint or face recognition via Android's secure BiometricPrompt). Biometric verification is processed entirely by the Android operating system; Desaxuste never accesses or stores your raw biometric data.

4) User-directed file imports and exports

Desaxuste accesses files only when you explicitly initiate an action using Android's system Storage Access Framework (SAF):

• Document/CSV Selection: When you choose "Open report" or "Import CSV", you select the file directly via Android's system file picker. Desaxuste reads only the specific document you selected and stores your reviewed tables in protected local storage.
• Report Export: When you choose to export a report or verification record, you choose the destination folder via the system picker. Desaxuste creates a readable PDF or canonical JSON verification record at that chosen location.

5) Third-party SDKs and tracking

Desaxuste does not incorporate any third-party analytics SDKs, advertising libraries, cloud synchronizers, or tracking mechanisms. There is no account creation, login, or registration required.

6) Data deletion

You can delete individual report projects or reset the app's entire workspace at any time within the app. Clearing app storage in Android Settings or uninstalling Desaxuste immediately and permanently removes all locally stored projects, assumptions, and encryption keys from your device.

7) Operating limits & research disclaimer

Desaxuste evaluates whether entered categorical tables are mathematically compatible under stated integer population assumptions. It is not an empirical research validator, misconduct investigator, or legal auditing instrument.