Privacy Policy — Senin
1) Who we are
Senin is provided by Saifullah Ahad ("we", "us", "our"). Our website/portfolio is: https://saifullah.ai.
2) What this policy covers
This Privacy Policy explains what information we collect, how we use it, and the choices you have when you use Senin (the "App").
3) Information we collect
Senin does not collect, transmit, or share any personal information.
The app works completely offline. All data is stored locally on your device using Room Database, an Android built-in storage system. The only data stored includes:
- Profiles you create: Name, birth date, and relationship (e.g., "Self", "Son") — stored locally on your device only
- App preferences: Settings such as theme preference — stored locally using Android DataStore
No internet permission is declared in the app's AndroidManifest.xml. The app makes zero network calls.
4) How we use information
All data stays on your device and is used only to:
- Calculate and display your age based on the birth date you enter
- Show saved profiles you create for family members
- Remember your app settings (e.g., theme preference)
5) Sharing and disclosure
We do not share any information with any third party.
The app contains no analytics, no crash reporting, no advertising SDKs, no tracking libraries, and no network calls of any kind.
6) Data retention
Your data is stored on your device until you choose to delete it. You can:
- Delete any saved profile from within the app at any time
- Uninstall the app to remove all stored data completely
7) Your choices and controls
- Full control: You choose what birth dates to enter and can delete any profile instantly
- No permissions required: The app requests no Android permissions — no camera, no location, no storage, no notifications
- Offline always: The app works without internet — no data ever leaves your device
8) Security
Since all data stays on your device and is never transmitted, the security model is straightforward: your data is protected by your device's built-in security. The app uses Android's Room Database for structured local storage.
9) Children's privacy
Senin is not directed to children under 13 (or the equivalent minimum age in your jurisdiction), and we do not knowingly collect personal information from children. Since the app collects no data at all, there is no risk of collecting information from children.
10) International transfers
No data is transferred across borders because no data is transmitted at all. The app works completely offline.
11) Changes to this policy
We may update this Privacy Policy from time to time. We will post the updated policy on our website at https://privacy.saifullah.ai and update the effective date above.
12) Contact
If you have questions or requests, contact: Saifullah Ahad
Email: www.saifullah.ai@gmail.com
Phone: +8801711134346
Website: https://saifullah.ai
Location: Dhaka, Bangladesh