Privacy Policy

Crown: Hair Progress · Qingdao Ketai Software Co., Ltd. · Effective July 10, 2026

TL;DR — We collect nothing.

Crown does not collect, transmit, sell, or share any of your data. There are no accounts, no analytics, no ads, no trackers, and no company servers. Your photos and records stay on your device and — if you enable sync — in your own private iCloud.

Crown 不收集、不上传、不出售、不共享你的任何数据。没有账号、没有统计分析、没有广告、没有跟踪器、也没有我们的服务器。你的照片与记录只保存在你的设备上；若开启同步，则保存在你自己的私人 iCloud 中。

1. Data stored on your device / 存储在你设备上的数据

Progress photos, treatment plans, reminders, weekly notes, measurements and settings are stored locally in the app's private container. We have no access to them.

进度照片、治疗方案、提醒、周记、测量与设置均保存在 App 的本地私有容器内，我们无法访问。

2. iCloud sync / iCloud 同步

If you enable iCloud sync, your data is stored in your personal, private iCloud database (CloudKit private database) tied to your Apple ID. It is encrypted in transit and at rest by Apple. Only your devices can read it — we cannot.

开启 iCloud 同步后，数据保存在与你 Apple ID 绑定的私人 CloudKit 数据库中，由 Apple 负责传输与存储加密。只有你自己的设备能读取，我们不能。

3. Camera & photos / 相机与照片

The camera is used only to take standardized progress photos inside the app. Photos are saved to the app's private storage; they are added to your system photo library only when you explicitly export or share them. Face-alignment guidance runs entirely on device using Apple's Vision framework.

相机仅用于在 App 内拍摄标准化进度照片。照片保存在 App 私有存储中，只有当你主动导出或分享时才会写入系统相册。人脸对齐引导完全在设备端通过 Apple Vision 框架完成。

4. Apple Health / 健康数据

If you grant permission, Crown reads last night's sleep duration from Apple Health to add context to your weekly check-ins. This data is read on demand, displayed to you, and never written back or uploaded. You can revoke access anytime in Settings → Health.

如你授权，Crown 会从"健康"App 读取昨晚睡眠时长，用于周记参考。该数据即取即用、仅展示给你本人，不会写回或上传。可随时在设置 → 健康中撤销授权。

5. Notifications / 通知

Reminders (doses, photo day, appointments) are scheduled locally on your device. No push servers are involved.

用药、拍照日与复诊提醒均为本地通知，不经过任何推送服务器。

6. Purchases / 购买

Subscriptions and the lifetime purchase are processed by Apple through your Apple ID. We never see your payment details. Purchase state is verified on device with StoreKit.

订阅与买断由 Apple 通过你的 Apple ID 处理，我们不会接触你的支付信息。购买状态通过 StoreKit 在设备端校验。

7. Children / 未成年人

Crown is not directed at children under 13 and does not knowingly collect information from anyone (it collects nothing from everyone).

Crown 不面向 13 岁以下儿童，也不会在知情的情况下收集任何人的信息（事实上对所有人都不收集）。

8. Not medical advice / 非医疗建议

Crown documents change over time. It does not diagnose conditions, measure hair density, or provide medical advice, and it is not a medical device. Consult a qualified clinician for medical decisions.

Crown 仅记录随时间的变化，不诊断疾病、不测量毛发密度、不提供医疗建议，也不是医疗器械。医疗决策请咨询专业医生。

9. Changes / 政策变更

If this policy changes, the updated version will be posted at this address with a new effective date.

政策如有变更，将在本页面发布并更新生效日期。

10. Contact / 联系我们

Qingdao Ketai Software Co., Ltd. · aiagentmem@gmail.com