1. About this policy
This page explains how information about players is handled in the game "Dropjong" (known in Japan as "Tenrakuhai"), provided by maosun-dev ("the Developer"), in both the iPhone app and the web version.
2. Information the Developer collects
The Developer does not collect personal information such as your name, email address, or location.
Your on-device ranking, Yaku Collection, language, and sound settings are stored only on your device and are never sent to the Developer (see section 4 for Game Center leaderboards). If you delete the app (or clear the site data in your browser for the web version), these records are erased.
3. Ads (iPhone app)
The iPhone app shows ads using Google AdMob, provided by Google LLC. To show ads, the following information may be sent to Google:
- Advertising identifier (IDFA), only if you choose "Allow" in the tracking prompt
- IP address and device information such as model and OS version
- Usage data such as ad impressions and taps
- Approximate location inferred from your IP address
Google uses this information to deliver ads, measure their performance, and prevent fraud. If you do not allow tracking, the advertising identifier is not sent and you will see ads that are not based on your interests. You can change this at any time in iPhone Settings > Privacy & Security > Tracking.
For how Google handles information, see the following pages:
The web version has no ads.
4. Global leaderboards (Game Center, iPhone app)
The iPhone app shows global leaderboards through Game Center, provided by Apple Inc. If you are signed in to Game Center, your score is sent to Apple together with your Game Center nickname and shown on the leaderboard to other players. The Developer does not receive your nickname or other such information. If you do not want to use Game Center, you can sign out in iPhone Settings > Game Center. For how Apple handles information, see the Apple Privacy Policy.
5. Use of GitHub Pages
The web version is hosted on GitHub Pages, provided by GitHub, Inc. When the iPhone app starts, it also loads an ad-frequency settings file from GitHub Pages. In these cases GitHub may keep access logs such as your IP address for security purposes. See the GitHub General Privacy Statement for details.
6. Children
This game is not directed at children under 13. The Developer does not knowingly collect personal information from children under 13.
7. Changes to this policy
If this policy changes, we will announce it on this page. For significant changes, we will also mention it in the app update notes.
8. Contact
For questions about this policy or the game, please email: