Effective date: August 18, 2026 (previous: July 23, 2026 — updated for the iOS release to state what each platform actually does, and to reflect that paid purchases are not offered.)
This Privacy Policy describes how DuoDuel ("the App", "we") handles information when you use our mobile application.
DuoDuel does not collect your name, email, or other personal identifiers. There is no sign-up.
The table below is what the App actually does as of the effective date — it differs by platform. "Not offered" means the corresponding data is not collected at all.
| Feature | Android | iOS |
|---|---|---|
| Advertising (Google AdMob) | Shown (Section 3) | Not shown |
| Account linking (Play Games) | Optional (Section 2) | Not offered |
| In-app purchases | Not currently offered | Not offered |
| Online matches | Available (Section 2) | Available (Section 2) |
| Anonymous analytics & error diagnostics | With consent (Section 2) | With consent (Section 2) |
The iOS release ships without advertising, account linking, or in-app purchases. It therefore does not use the advertising identifier (IDFA) and does not request App Tracking Transparency permission, and no progress wallet or player ID is created on our server. What applies is on-device game data, anonymous analytics and error diagnostics if you consent (Section 2 — these are retained as log records on our server), and online match relay.
On Android, if you choose to link an account, our server stores your Play Games player ID and your in-game progress (coins, diamonds, skins) so it can be restored across devices (see Sections 2 and 6). You can use every feature without linking.
The Android release shows banner and interstitial advertisements provided by Google AdMob, a third-party advertising service operated by Google. We do not use any third-party analytics service. No banners are placed on gameplay screens.
The iOS release shows no advertisements. It does not use the advertising identifier (IDFA) and does not request App Tracking Transparency permission. This section does not apply to iOS. If advertising is introduced on iOS, this Policy will be updated and published with a new effective date first.
As of the effective date the App offers no paid products on either Android or iOS. Coins and Diamonds are free currencies earned through play; they cannot be bought with money or exchanged for money. Accordingly no payment instrument details and no purchase tokens are sent to our server. (The app may query the store for its product list; that communication happens only between the app and the store.)
A store listing may still display an "In-app purchases" label, but no purchase screen opens inside the App.
If in-app purchases are re-enabled, payments would be handled by the respective store's billing system (Google Play / Apple App Store) and we would not collect or store payment instrument details. In that case this Policy will be updated and published with a new effective date first (Section 8).
DuoDuel is not directed to children and is not designed or marketed as a child-directed app. We do not knowingly collect personal information from children, and we do not knowingly process data subject to COPPA (US), GDPR-K (EU), or similar children's privacy regulations. If you believe a child has provided such information, please contact us using the details in Section 9.
If you do not link an account — and on iOS — no progress wallet or player ID is retained on our servers (anonymous analytics and error diagnostics, if you consented, are retained as described in Section 2). On-device data (settings, coins, diamonds, skins, scores) can be removed at any time via Settings → "Reset data" in the app, or by uninstalling.
If you have linked an account, the progress wallet and player ID stored on our server can be deleted on request per our Data Deletion guide. Data collected by Google AdMob on Android is retained and deleted according to Google's own policies — see the Google Privacy Policy.
All server communication is encrypted in transit (HTTPS/WSS). Online match traffic is limited to anonymous game signals, and the progress wallet and player ID stored when you link an account are kept on an access-restricted server.
If this policy changes, the updated version will be posted on this page with a new effective date, and material changes will be announced in the App.
Under Article 30 of the Personal Information Protection Act of the Republic of Korea, we designate the following person as responsible for personal data protection.
You may contact this address for any request to access, correct, delete, or suspend processing of your personal data. We respond without undue delay.
Questions about this Privacy Policy? Use our contact form or email info@duoduel.co.kr.