Four Pillars Match Privacy Policy
# Four Pillars Match (궁합노트) Privacy Policy
**Effective date: July 22, 2026**
**Last updated: July 22, 2026**
Four Pillars Match (궁합노트) ("this app") respects your privacy and complies with applicable data-protection laws. This app has **no sign-up, does not transmit any information you enter to a server, and operates fully offline — processing and storing data only on your device.**
## 1. Information This App Collects or Transmits
### 1a. Directly Identifiable Information
This app does **not collect or transmit** any directly identifiable personal information such as your name, email, phone number, or account. There is no sign-up or login.
### 1b. Locally Stored Information
The information you enter for a compatibility reading (nickname, date of birth, birth time (optional), gender, relationship type) and any readings you save are stored **only on your device**. They are never transmitted to a server and cannot be accessed by any third party, including the developer.
- Local database (Hive): saved compatibility readings (entered nicknames, birth dates, scores, grades, etc.)
- Local preferences (shared_preferences): app settings such as theme, language, hour-pillar toggle, and weighting preset
This data is deleted when you uninstall the app.
### 1c. Processing via Third-Party Services
**Google AdMob (advertising)**
To offer this app for free, we display Google AdMob ads. AdMob may collect and process an advertising identifier, IP address, and device information to serve personalized ads. This information is **not linked to your identity.**
- Google Ads policy: https://policies.google.com/technologies/ads
- On iOS, App Tracking Transparency (ATT) lets you choose whether to allow tracking.
## 2. App Permissions
This app does not request sensitive permissions such as camera, microphone, contacts, location, or storage. It uses only an internet connection (INTERNET) to display ads and check for updates.
## 3. Retention Period
- Locally stored information: kept until you delete it in the app or uninstall the app, at which point it is deleted immediately.
- Information processed by third parties (Google AdMob): governed by that service's own privacy policy.
## 4. Third-Party Disclosure
This app does not share the information you enter or save with any third party. No information is provided externally other than the advertising identifier processed by Google AdMob during ad display.
## 5. Your Rights
- You may delete saved compatibility readings at any time within the app.
- Uninstalling the app removes all data stored on your device.
- Reset/limit the advertising identifier: Settings → Google → Ads (Android) or Settings → Privacy → Tracking (iOS) to reset the advertising ID or limit personalized ads.
## 6. Children's Privacy
This app is not primarily directed at children under the age of 14 (nor under the age of 13 per COPPA) and does not knowingly collect children's personal information. Ads shown are intended for a General Audience.
## 7. Privacy Contact
- Name: SiU Ahn
- Email: siwooeo@gmail.com
For privacy inquiries, contact the email above; we will respond within 7 business days.
## 8. Changes to This Policy
This policy may be revised in line with legal or service changes. Any change will be announced through an app update or this page.
This app provides traditional Korean myeongli (Four Pillars) interpretations for fun and reference; results are for entertainment purposes.
**Effective date: July 22, 2026**
**Last updated: July 22, 2026**
Four Pillars Match (궁합노트) ("this app") respects your privacy and complies with applicable data-protection laws. This app has **no sign-up, does not transmit any information you enter to a server, and operates fully offline — processing and storing data only on your device.**
## 1. Information This App Collects or Transmits
### 1a. Directly Identifiable Information
This app does **not collect or transmit** any directly identifiable personal information such as your name, email, phone number, or account. There is no sign-up or login.
### 1b. Locally Stored Information
The information you enter for a compatibility reading (nickname, date of birth, birth time (optional), gender, relationship type) and any readings you save are stored **only on your device**. They are never transmitted to a server and cannot be accessed by any third party, including the developer.
- Local database (Hive): saved compatibility readings (entered nicknames, birth dates, scores, grades, etc.)
- Local preferences (shared_preferences): app settings such as theme, language, hour-pillar toggle, and weighting preset
This data is deleted when you uninstall the app.
### 1c. Processing via Third-Party Services
**Google AdMob (advertising)**
To offer this app for free, we display Google AdMob ads. AdMob may collect and process an advertising identifier, IP address, and device information to serve personalized ads. This information is **not linked to your identity.**
- Google Ads policy: https://policies.google.com/technologies/ads
- On iOS, App Tracking Transparency (ATT) lets you choose whether to allow tracking.
## 2. App Permissions
This app does not request sensitive permissions such as camera, microphone, contacts, location, or storage. It uses only an internet connection (INTERNET) to display ads and check for updates.
## 3. Retention Period
- Locally stored information: kept until you delete it in the app or uninstall the app, at which point it is deleted immediately.
- Information processed by third parties (Google AdMob): governed by that service's own privacy policy.
## 4. Third-Party Disclosure
This app does not share the information you enter or save with any third party. No information is provided externally other than the advertising identifier processed by Google AdMob during ad display.
## 5. Your Rights
- You may delete saved compatibility readings at any time within the app.
- Uninstalling the app removes all data stored on your device.
- Reset/limit the advertising identifier: Settings → Google → Ads (Android) or Settings → Privacy → Tracking (iOS) to reset the advertising ID or limit personalized ads.
## 6. Children's Privacy
This app is not primarily directed at children under the age of 14 (nor under the age of 13 per COPPA) and does not knowingly collect children's personal information. Ads shown are intended for a General Audience.
## 7. Privacy Contact
- Name: SiU Ahn
- Email: siwooeo@gmail.com
For privacy inquiries, contact the email above; we will respond within 7 business days.
## 8. Changes to This Policy
This policy may be revised in line with legal or service changes. Any change will be announced through an app update or this page.
This app provides traditional Korean myeongli (Four Pillars) interpretations for fun and reference; results are for entertainment purposes.