**App:** FengShui (Luo Pan / La Bàn Feng Shui Compass)
**Developer:** Indie Developer
**Contact:** indiedevloper@gmail.com
**Last updated:** 16 June 2026
Thank you for using FengShui. We respect your privacy. This policy explains what
information the app uses, how it is used, and the choices you have. In short:
**FengShui does not have permission to access the internet, and it does not send
any of your information off your device.**
- The app works entirely **on your device**.
- It does **not** require an account or any sign‑in.
- It does **not** include the `INTERNET` permission, so it cannot transmit your
data to us or to any third party.
- It does **not** contain advertising or third‑party analytics/tracking SDKs.
- The only information you enter (your birth date, the gender used for the
calculation, and your preferred language) is stored locally on your device.
## 2. Information the App Uses
### a) Profile information you provide
To calculate your Kua number, Eight Mansions directions, and related Feng Shui
readings, the app asks you to enter:
- **Gender** (used solely as an input to the traditional Kua calculation, not as
- **Preferred display language** (Chinese, Vietnamese, or English)
This information is saved **only in the app's private local storage**
(Android SharedPreferences) on your device. It is used only to perform the
Feng Shui calculations and to remember your settings between sessions. It is
never collected by us or shared with anyone.
### b) Device sensors (compass)
The app reads your device's **orientation/magnetometer (compass) sensors** in
real time to display the live heading of the Luo Pan compass dial. This sensor
data is used momentarily on‑device to draw the compass and is **not stored or
### c) Approximate location (optional)
The app requests the **Approximate location** permission
(`ACCESS_COARSE_LOCATION`). This is **optional** and is used for a single
purpose: to look up the local **magnetic declination** so the compass can offer
a "true north" reading instead of magnetic north.
- Location is used **on‑device only**, to compute declination via Android's
built‑in `GeomagneticField`.
- Your location is **not stored** by the app and is **never transmitted** off
- If you deny this permission, the app still works fully; it simply uses
magnetic north and/or a manual mode.
## 3. Information We Do **Not** Collect
We do not collect, store, or have access to any of the following:
- Personal identifiers, contacts, accounts, or email
- Photos, files, or media
- Usage analytics, advertising identifiers, or tracking data
Because the app has no internet permission, no information about you reaches our
servers — we operate no servers that receive your data.
The app allows Android's standard backup feature (`allowBackup`) to include your
app settings. If you have enabled **Android Backup / Google Drive backup** on
your device, your locally stored profile (birth date, gender, language) may be
included in that system backup managed by Google under your Google account.
This backup is controlled by your device and Google settings, not by us. You can
disable it in your device's backup settings.
## 5. Third‑Party Services
The app includes the **Google Play In‑App Review** library, which may show the
standard Google Play rating prompt. Any interaction with that prompt is handled
by Google Play and is subject to
[Google's Privacy Policy](https://policies.google.com/privacy). The app itself
does not send your personal data to Google through this feature.
The app is a general‑audience reference tool and is not directed at children. It
does not knowingly collect personal information from children, and in any case it
does not transmit any information off the device.
## 7. Data Retention and Deletion
Your profile data stays on your device until you delete it. You can remove all
data the app holds at any time by:
- Editing or clearing your profile within the app, or
- Clearing the app's storage (Android Settings → Apps → FengShui → Storage →
- Uninstalling the app, which removes all locally stored data.
Your information remains within the app's private storage on your device and is
protected by Android's app sandbox. Because nothing is transmitted off your
device by the app, there is no transmission for a third party to intercept.
## 9. Changes to This Policy
We may update this Privacy Policy from time to time. Changes will be reflected by
updating the "Last updated" date above. Continued use of the app after an update
constitutes acceptance of the revised policy.
FengShui is provided for cultural, educational, and entertainment purposes.
Feng Shui readings are based on traditional formulas and should not be relied on
If you have any questions about this Privacy Policy, please contact us at:
**indiedevloper@gmail.com**