Questions, bug reports or feature ideas — we read every email. 使用问题、Bug 反馈或功能建议——每封邮件我们都会认真阅读。
On your device by default. If you turn on iCloud sync in Settings, data is mirrored to your private iCloud database that only your Apple account can access. We run no servers and cannot see your data. 默认只存在你的手机上。若在设置中开启 iCloud 同步，数据会镜像到你的私人 iCloud 数据库，只有你的 Apple 账号能访问。我们没有服务器，也无法看到你的数据。
Settings → Privacy → iCloud sync & backup. The change takes effect the next time you launch the app; existing local data uploads automatically. 设置 → 隐私 → iCloud 同步与备份。开关在下次启动 App 时生效，已有的本地数据会自动上传。
Meaningful associations need enough data — that's statistical honesty, not a delay tactic. Each trigger also needs 5+ occurrences before it appears in analysis. 有意义的关联需要足够的数据支撑——这是统计上的诚实，不是故意拖延。此外，单个诱因也需要出现 5 次以上才会进入分析。
No. Photos are processed entirely on-device (including ingredient-label OCR). They sync to your private iCloud only if you enable sync. 不会。照片全部在设备端处理（包括成分表 OCR 识别）。只有你开启同步后，照片才会进入你的私人 iCloud。
Settings → Your data → Export all data (CSV). Export is free for everyone, always. 设置 → 你的数据 → 导出全部数据（CSV）。导出永久免费。
Subscriptions are managed by Apple: iPhone Settings → your name → Subscriptions → Itchwise → Cancel. Or in-app: Settings → Subscription → Manage subscription. 订阅由 Apple 管理：iPhone 设置 → 你的姓名 → 订阅 → 肤记 → 取消订阅；或在 App 内：设置 → 订阅 → 管理订阅。
In-app: Settings → Subscription → Restore purchases (make sure you're signed in with the same Apple ID). Still stuck? Email us. App 内：设置 → 订阅 → 恢复购买（请确认使用的是同一个 Apple ID）。仍未解决请发邮件给我们。
No. Itchwise is a tracking tool. It records what you enter and computes statistical associations on-device. It does not diagnose, treat, or give medical advice — always consult your dermatologist. 不是。肤记是记录工具，只记录你输入的内容并在设备端做统计关联分析；不做诊断、不提供治疗或医疗建议——任何医疗问题请咨询皮肤科医生。