Effective date: 25 September 2026
Kobongisa is a measured room-layout and wheelchair-route planning app developed by Saifullah Ahad.
The app stores folio names, room and furniture measurements, openings, wheelchair envelopes and journey endpoints in its private local database. Saved plan payloads are encrypted using AES-GCM with a key held by Android Keystore. Appearance and preview preferences remain in private local storage. This information is not sent to the developer.
Kobongisa has no accounts, advertisements, analytics or telemetry. The Android app does not request internet, network-state, camera, microphone, location or broad-storage access. Room and wheelchair measurements are entered manually.
App lock is off by default. You may enable a dedicated App PIN, fingerprint/face unlock, or both independently. If you set an App PIN, a salted SHA-256 hash and a random 16-byte salt are stored in the app's local DataStore. The plaintext PIN is never stored. The App PIN is separate from your device PIN; the app cannot read your device PIN and does not offer device-PIN or pattern fallback.
Optional biometric unlock uses Android's BiometricPrompt and USE_BIOMETRIC permission. Android performs the check; the app never receives your fingerprint or face data. If you forget the App PIN and cannot use an enabled biometric, there is no account-based recovery. Clearing app storage removes the lock and saved folios.
Android's document picker gives the app access to the JSON plan you choose to import or the destination you choose for a JSON/PDF export. Imports create separate folios. Exported files are readable documents and are not encrypted by Kobongisa. If you choose a cloud document provider, that provider may transfer or retain the selected file under its own privacy policy.
Folios remain until you delete them, clear app storage or uninstall the app. Android automatic cloud backup and app-data device transfer are disabled, including for lock material. Export a JSON copy if you need an independent backup. Deleting local data does not delete exported copies; remove those at the destination where you saved them.
Website links open your browser, app links open the selected app or Google Play, and telephone contact opens the dialer without placing a call. Feedback opens an email draft for you to review and send in your email app. No measurements are attached automatically. If you send an email, the developer receives the message and sender address and uses them to handle your request. Avoid including sensitive home or health details. These external services apply their own privacy policies.
The app is a general-purpose planning tool and is not specifically directed at children. It does not collect personal information from children or other users.
This policy may change if the app's data handling changes. The effective date identifies the current version.
Developer: Saifullah Ahad
Email: [email protected]
Website: saifullah.ai