数独隐私政策
Sudoku Privacy Policy
最后更新：2026年9月8日
Last updated: September 8, 2026
欢迎使用本应用。我们重视你的隐私。本政策说明本应用如何处理信息。
1. 总则
本应用主要为单机益智游戏。闯关和自由练习在设备本地完成。可选的对战功能（每日挑战、同一设备热座、在线房间）中，在线房间需要联网。
2. 我们收集的信息
单机模式不要求注册账号。闯关进度和主题偏好保存在你的设备本地。
若你使用在线房间，应用可能使用：
- 一个匿名 Firebase Authentication 标识，用于创建或加入竞速/回合制房间。房间数据（题目种子、棋盘、分数、用时）保存在 Google 托管的 Firebase Realtime Database。
我们不会出售这些信息，也不会用于广告。
3. 第三方服务
若你选择非系统字体，应用可能从 Google Fonts 下载对应字体。
在线房间可能使用 Firebase Authentication 与 Firebase Realtime Database。上述服务另有各自的隐私政策。本版本不使用 Apple Game Center 或 Google Play 游戏。
4. 儿童隐私
若你作为家长认为未成年人向我们提交了个人信息，请通过下方联系方式与我们联系，我们将在合理范围内协助处理。
5. 你的选择与删除数据
你可随时通过设备的「应用信息」清除本应用本地数据，或卸载本应用。
要删除可选的对战数据，请在应用「设置」中点「删除对战数据」。这会删除本机匿名 Firebase 账号。
6. 政策更新
我们可能不时更新本政策。更新后的版本将在本页面发布，并更新「生效日期」。
7. 联系我们
如有疑问，请通过 Caju 门户或 GitHub 组织 Cute-Satsuma 联系我们。
Thank you for using our app. We respect your privacy. This policy explains how the app handles information.
1. Overview
This app is primarily a single-player puzzle game. Campaign and free play run on your device. Optional battle features (the daily challenge, pass-and-play on one device, and online rooms) may need a network connection for rooms.
2. Information we collect
Single-player modes do not require an account. Campaign progress and theme preferences stay on your device.
If you use online rooms, the app may use:
- An anonymous Firebase Authentication ID to create or join race and turn-based rooms. Room data (puzzle seed, board, scores, timers) is stored in Firebase Realtime Database, hosted by Google.
We do not sell this information. We do not use it for advertising.
3. Third-party services
Optional fonts may be downloaded from Google Fonts if you pick a non-system typeface.
Online rooms may use Firebase Authentication and Firebase Realtime Database. Their own privacy policies apply to those services. This version does not use Apple Game Center or Google Play Games.
4. Children's privacy
If you are a parent or guardian and believe a child has submitted personal information to us, please contact us using the details below and we will assist within reasonable limits.
5. Your choices and deleting data
You may delete locally stored app data through your device settings or by uninstalling the app.
To delete optional battle data, open Settings in the app and tap Delete battle data. That removes the anonymous Firebase account on this device.
6. Changes to this policy
We may update this policy from time to time. The updated version will be published on this page with a revised effective date.
7. Contact us
Questions? Please contact us via the Caju portal or the GitHub organization Cute-Satsuma.