Number Chain Privacy Policy
DAMOA Studio ("we") processes the personal information of Number Chain (the "Game") players only as needed, in accordance with the Personal Information Protection Act of Korea and other applicable laws.
Effective date: November 11, 2026
The Korean version of this policy is the original. If the two versions differ, the Korean version prevails.
1. Information we process and why
You can play without creating an account. We do not run our own servers, and we do not collect your name, phone number or email address. The information below is either stored only on your device or processed directly by Google when you use a related feature.
| Information | When | Processed by | Purpose |
|---|---|---|---|
| Game records (best score, best level, recent records, achievement progress), the game in progress, settings (language, theme, sound), tutorial completion | While you play | Stored only on your device | Resume games, keep records and settings |
| Rewarded-ad receipts (request ID, reward type) | When you watch a rewarded ad | Stored only on your device | Grant each ad reward exactly once |
| Google Play Games profile (player ID, nickname), scores, achievements | Only if you sign in to Play Games | Leaderboards and achievements | |
| Advertising ID, device and app information, approximate location (from IP address), ad interactions, ad consent choices | When you watch a rewarded ad or see the ad consent form | Google (AdMob, User Messaging Platform) | Serving and measuring ads, fraud prevention, consent management |
| Google Play purchase information (order ID, purchase state) | When you buy or restore Remove Ads | Google Play | Verifying the purchase, providing and restoring the benefit (we never receive card or other payment details) |
| Anonymous usage statistics (game start and end, score and level, item and ad use), app instance ID, device information, approximate location (country) | While you play | Google (Firebase Analytics) | Usage statistics to improve the game. The advertising ID is not used for statistics. |
We do not separately collect or look into the information that leaves your device. We view anonymous usage statistics only as aggregates in the Firebase console, which do not identify you. We may view order information in the Google Play Console to handle purchase inquiries or refunds.
2. Retention and deletion
| Information | Retention |
|---|---|
| On-device records, settings and ad receipts | Until you clear the app's data or uninstall the app. Never sent to our servers. |
| Play Games profile, scores and achievements | Under Google Play Games policies. You can delete them in Play Games settings. |
| Advertising information | Under Google's Privacy Policy |
| Anonymous usage statistics (Firebase Analytics) | Deleted automatically after 14 months |
| Payment and withdrawal records | 5 years (Korean Act on Consumer Protection in Electronic Commerce; order records kept by Google Play and in our console) |
| Consumer complaint and dispute records | 3 years (same Act) |
3. Service providers and international transfer
The Game uses the Google services below. When you use a related feature, data is sent over the network to Google outside Korea (including the United States). If you do not want this, you can choose not to sign in to Play Games, not to watch ads, or stop using the Game.
| Recipient (country) | Service | Data | Retention |
|---|---|---|---|
| Google LLC (United States and others) | Leaderboards and achievements (Google Play Games), ads (AdMob) and ad consent (User Messaging Platform), payments (Google Play Billing), anonymous usage statistics (Firebase Analytics) | Play Games profile, scores, achievements; advertising ID, device information, ad interactions; purchase information; anonymous usage statistics, app instance ID, approximate location (country) | Under Google's policies or the retention periods above |
See the Google Privacy Policy and How Google uses information from sites or apps that use its services.
4. Sharing with third parties
We do not share your personal information with third parties, except when required by law through due process.
5. Your rights
- You may request access to, correction, deletion or suspension of processing of your personal information at any time.
- Delete on-device records: in the Game's Settings, the option to clear this device's records (your purchase is kept), or device Settings → Apps → Number Chain → Storage → Clear data, or uninstall the app. Deleted records cannot be recovered.
- Play Games data: delete your profile and game data, or change visibility, in the Play Games app settings.
- Change ad consent: where consent is required, open Settings → Privacy choices in the Game.
- For any other request, contact us below and we will respond without delay.
6. Advertising ID
Rewarded ads are shown only when you choose to watch one, and may use your advertising ID. You can reset or delete it in device Settings → Google → Ads (or Privacy → Ads). After you buy Remove Ads, the Game does not load ads.
7. Children
Target age: 13 and older. We do not knowingly collect personal information from children under 14. If we learn that such information has been processed, we will delete it without delay.
8. Security
- We do not send personal information to our own servers; game records stay in the app's private storage on your device.
- Communication with Google services is encrypted (HTTPS).
- Purchases are verified through Google Play Billing, and ad rewards are granted only after the ad reports the reward.
9. Privacy officer
Name: Kim Kyehyun (김계현), Representative
Email: damoa7804@gmail.com
10. Changes to this policy
We will announce changes in the Game and on this page 7 days before they take effect (30 days for changes unfavorable to you).
Business information
DAMOA STUDIO (다모아) · Representative Kim Kyehyun (김계현)
Business registration no. 879-17-02756 · Mail-order business report no. 2026-인천부평-1899
Address 인천광역시 부평구 부개로 58, 112동 901호(부개동, 푸른마을한신아파트), Republic of Korea
Phone +82-10-2601-3952 · Email damoa7804@gmail.com