DH Lotto Hotspot Privacy Policy
# DH Lotto Hotspot — Privacy Policy
- Service: DH Lotto Hotspot (동행복권 명당)
- Effective Date: May 13, 2026
- Last Updated: May 13, 2026
SiU Ahn (hereinafter, "the developer") values the privacy of users of the mobile app **DH Lotto Hotspot** (hereinafter, "this app"). This policy describes what information this app collects and processes, the purposes, retention periods, and your rights.
This app does not require account registration and does not collect or store any directly identifiable personal information such as name, email, phone number, or date of birth.
## 1. Information collected and transmitted
### 1-1. Directly identifiable information
None. This app has no user account or login functionality and does not collect or store any directly identifiable information such as name, email, or phone number.
### 1-2. Locally stored on device (never transmitted)
The following items are stored only on the user's device and are never transmitted to any external server.
- List of favorited shop IDs
- App settings (language / theme / notification preferences)
- Ad consent (UMP / ATT) state
Storage: `shared_preferences` (Android: `SharedPreferences`, iOS: `NSUserDefaults`)
Deletion: Removed immediately when the app is uninstalled or when "Reset Data" is invoked from the settings screen.
### 1-3. Data transmitted to our own backend server
For nearby-shop search and round-by-round statistics, the following information is transmitted to this app's backend server (`https://hotspot.reactiveworks.dev`).
| Item | Trigger | Purpose |
|---|---|---|
| Location coordinates (latitude / longitude) | When the user explicitly invokes "find shops near me" | Return lottery shop results within a radius |
| Round number / search query / shop ID | When the user opens the corresponding screen or performs a search | Query public data (winning shop info from Dong-Haeng Lottery) |
The backend responds immediately to such requests and **does not store location coordinates or request history in a form linkable to an individual user**. Standard web-server access logs (IP, User-Agent, timestamp) are retained for at most 30 days for security and traffic analysis, then automatically deleted.
### 1-4. Information collected and processed by third-party SDKs
This app uses the following third-party services. The data collected and processed by these SDKs is governed by each provider's own privacy policy.
**Google AdMob (advertising)**
- Items: Advertising ID (IDFA / AAID), IP address, device information (model / OS version / language), ad impression and click events
- Purpose: Display of personalized or non-personalized ads, ad performance measurement, fraud prevention
- User controls:
- iOS: On first launch, an "App Tracking Transparency" dialog asks whether tracking is allowed. Selecting "Ask App Not to Track" causes IDFA to be unavailable, and only non-personalized ads are shown.
- Android: System Settings → Google → Ads → "Reset advertising ID" or "Delete advertising ID" restricts tracking.
- AdMob privacy policy: https://policies.google.com/privacy
**Google UMP (User Messaging Platform, EU users)**
- Purpose: Collection of advertising consent under GDPR / IAB TCF v2
- Same policy as AdMob applies
**Apple App Tracking Transparency (iOS system SDK)**
- Purpose: Invoke the system dialog that requests advertising-tracking consent on iOS
- Does not directly collect or store data
**Google Play In-App Update / In-App Review (Android system services)**
- Purpose: Inform users of the latest version, invoke the Play Store rating dialog
- No personally identifiable information is collected
**OS Share Sheet (`share_plus`)**
- Purpose: Invoke the OS share menu when the user taps "Share"
- The developer cannot tell which app the user selected; shared content is delivered by the OS
## 2. Permissions
| Permission | OS | Purpose | Impact if denied |
|---|---|---|---|
| Internet (`INTERNET`) | Android | Backend API calls, receiving AdMob ads | App not usable |
| Fine Location (`ACCESS_FINE_LOCATION`) / Coarse Location (`ACCESS_COARSE_LOCATION`) | Android | "Find shops near me" feature | Only the location-based search is unavailable (round queries and search still work) |
| Location (`NSLocationWhenInUseUsageDescription`) | iOS | Same | Same |
| Tracking (`NSUserTrackingUsageDescription`) | iOS | Personalized ads | Non-personalized ads only |
This app does not request any other sensitive permissions such as camera, microphone, contacts, or storage (photos / media).
## 3. Retention period
- **Locally stored data**: Retained until the app is uninstalled or reset from settings. No external backups.
- **Backend access logs (IP / User-Agent)**: Retained for at most 30 days, then automatically deleted.
- **Third-party SDKs (AdMob, etc.)**: Governed by each provider's retention policy.
## 4. Third-party disclosure
Except for the items listed in Section 1, this app does not sell, rent, or share user information with any third party. Aside from data independently processed by the third-party SDKs listed in Section 1-4, the developer does not transmit user data to any other third party.
## 5. User rights
You may control data related to this app at any time using the following methods.
- **Delete local data**: Settings screen → Reset Data, or uninstall the app via the OS
- **Revoke location permission**: OS Settings → App permissions → Location
- **Reset advertising ID (Android)**: System Settings → Google → Ads → "Reset advertising ID"
- **Opt out of ad tracking (iOS)**: System Settings → Privacy → Tracking → toggle "DH Lotto Hotspot" OFF
- **Revoke advertising consent (EU)**: Settings screen → Reset ad consent (UMP)
## 6. Children's privacy
This app is not designed primarily for children under the age of 14 (per Korean law) or under the age of 13 (per the U.S. COPPA standard). The AdMob advertising used in this app is configured for a general audience and is not classified as child-directed. If we become aware that a child has used this app without parental consent, please contact us at the address below and we will promptly delete any related information, if any.
## 7. Privacy Officer
- Name: SiU Ahn
- Email: siwooeo@gmail.com
For inquiries or objections related to privacy, please email the address above. We will respond within 7 business days.
## 8. Changes to this policy
This policy may be revised due to changes in law or service. When revised, we will provide advance notice through this app or our marketing website (`https://www.reactiveworks.dev`) and update the effective date.
- Service: DH Lotto Hotspot (동행복권 명당)
- Effective Date: May 13, 2026
- Last Updated: May 13, 2026
SiU Ahn (hereinafter, "the developer") values the privacy of users of the mobile app **DH Lotto Hotspot** (hereinafter, "this app"). This policy describes what information this app collects and processes, the purposes, retention periods, and your rights.
This app does not require account registration and does not collect or store any directly identifiable personal information such as name, email, phone number, or date of birth.
## 1. Information collected and transmitted
### 1-1. Directly identifiable information
None. This app has no user account or login functionality and does not collect or store any directly identifiable information such as name, email, or phone number.
### 1-2. Locally stored on device (never transmitted)
The following items are stored only on the user's device and are never transmitted to any external server.
- List of favorited shop IDs
- App settings (language / theme / notification preferences)
- Ad consent (UMP / ATT) state
Storage: `shared_preferences` (Android: `SharedPreferences`, iOS: `NSUserDefaults`)
Deletion: Removed immediately when the app is uninstalled or when "Reset Data" is invoked from the settings screen.
### 1-3. Data transmitted to our own backend server
For nearby-shop search and round-by-round statistics, the following information is transmitted to this app's backend server (`https://hotspot.reactiveworks.dev`).
| Item | Trigger | Purpose |
|---|---|---|
| Location coordinates (latitude / longitude) | When the user explicitly invokes "find shops near me" | Return lottery shop results within a radius |
| Round number / search query / shop ID | When the user opens the corresponding screen or performs a search | Query public data (winning shop info from Dong-Haeng Lottery) |
The backend responds immediately to such requests and **does not store location coordinates or request history in a form linkable to an individual user**. Standard web-server access logs (IP, User-Agent, timestamp) are retained for at most 30 days for security and traffic analysis, then automatically deleted.
### 1-4. Information collected and processed by third-party SDKs
This app uses the following third-party services. The data collected and processed by these SDKs is governed by each provider's own privacy policy.
**Google AdMob (advertising)**
- Items: Advertising ID (IDFA / AAID), IP address, device information (model / OS version / language), ad impression and click events
- Purpose: Display of personalized or non-personalized ads, ad performance measurement, fraud prevention
- User controls:
- iOS: On first launch, an "App Tracking Transparency" dialog asks whether tracking is allowed. Selecting "Ask App Not to Track" causes IDFA to be unavailable, and only non-personalized ads are shown.
- Android: System Settings → Google → Ads → "Reset advertising ID" or "Delete advertising ID" restricts tracking.
- AdMob privacy policy: https://policies.google.com/privacy
**Google UMP (User Messaging Platform, EU users)**
- Purpose: Collection of advertising consent under GDPR / IAB TCF v2
- Same policy as AdMob applies
**Apple App Tracking Transparency (iOS system SDK)**
- Purpose: Invoke the system dialog that requests advertising-tracking consent on iOS
- Does not directly collect or store data
**Google Play In-App Update / In-App Review (Android system services)**
- Purpose: Inform users of the latest version, invoke the Play Store rating dialog
- No personally identifiable information is collected
**OS Share Sheet (`share_plus`)**
- Purpose: Invoke the OS share menu when the user taps "Share"
- The developer cannot tell which app the user selected; shared content is delivered by the OS
## 2. Permissions
| Permission | OS | Purpose | Impact if denied |
|---|---|---|---|
| Internet (`INTERNET`) | Android | Backend API calls, receiving AdMob ads | App not usable |
| Fine Location (`ACCESS_FINE_LOCATION`) / Coarse Location (`ACCESS_COARSE_LOCATION`) | Android | "Find shops near me" feature | Only the location-based search is unavailable (round queries and search still work) |
| Location (`NSLocationWhenInUseUsageDescription`) | iOS | Same | Same |
| Tracking (`NSUserTrackingUsageDescription`) | iOS | Personalized ads | Non-personalized ads only |
This app does not request any other sensitive permissions such as camera, microphone, contacts, or storage (photos / media).
## 3. Retention period
- **Locally stored data**: Retained until the app is uninstalled or reset from settings. No external backups.
- **Backend access logs (IP / User-Agent)**: Retained for at most 30 days, then automatically deleted.
- **Third-party SDKs (AdMob, etc.)**: Governed by each provider's retention policy.
## 4. Third-party disclosure
Except for the items listed in Section 1, this app does not sell, rent, or share user information with any third party. Aside from data independently processed by the third-party SDKs listed in Section 1-4, the developer does not transmit user data to any other third party.
## 5. User rights
You may control data related to this app at any time using the following methods.
- **Delete local data**: Settings screen → Reset Data, or uninstall the app via the OS
- **Revoke location permission**: OS Settings → App permissions → Location
- **Reset advertising ID (Android)**: System Settings → Google → Ads → "Reset advertising ID"
- **Opt out of ad tracking (iOS)**: System Settings → Privacy → Tracking → toggle "DH Lotto Hotspot" OFF
- **Revoke advertising consent (EU)**: Settings screen → Reset ad consent (UMP)
## 6. Children's privacy
This app is not designed primarily for children under the age of 14 (per Korean law) or under the age of 13 (per the U.S. COPPA standard). The AdMob advertising used in this app is configured for a general audience and is not classified as child-directed. If we become aware that a child has used this app without parental consent, please contact us at the address below and we will promptly delete any related information, if any.
## 7. Privacy Officer
- Name: SiU Ahn
- Email: siwooeo@gmail.com
For inquiries or objections related to privacy, please email the address above. We will respond within 7 business days.
## 8. Changes to this policy
This policy may be revised due to changes in law or service. When revised, we will provide advance notice through this app or our marketing website (`https://www.reactiveworks.dev`) and update the effective date.