隐私政策

适用版本：1.0 · 更新日期：2026-10-16

本机处理

大水理论是一款本地饮水照片日记，无需注册账号。不集成广告、用户追踪或第三方分析 SDK，不向开发者服务器上传照片、饮水记录或使用数据。

保存什么

你拍摄或选择的照片、填写的水量、记录时间与日期保存在本机。照片经压缩保存，不保留原始 EXIF。App 不识别或验证饮水量，不提供医疗或健康建议。

权限

相机用于拍摄照片，你可以拒绝并选择已有照片。系统照片选择器仅提供你选中的图片。保存分享图片到相册时，系统可能请求相关权限。

分享和备份

主动分享或导出时，内容发送到你选择的应用或位置，适用相应服务的隐私政策。系统设备备份可能包含 App 数据。.dashui 完整备份包含照片和记录，不加密，请妥善保管。没有云端自动同步；卸载或换机后恢复依赖外部完整备份或可用系统备份。

删除和保留

可删除单条打卡。为支持恢复，前一次索引、迁移前原文件和历史照片可能继续保留在本机。卸载会移除 App 本机数据；外部备份、分享内容及系统备份需在对应位置另行管理。

本说明网站

本网站由 Cloudflare 托管。访问网页时，托管服务可能处理 IP 地址、浏览器信息等网络请求数据，以提供网页和安全防护。此行为与 App 内的本地饮水记录分开，App 不会将照片和饮水记录发送至本网站。我们没有在本网站添加统计或广告脚本。

政策更新

如后续版本增加联网或同步功能，将更新本政策和相关说明。

Privacy Policy

Applies to version 1.0 · Updated: October 16, 2026

On-device processing

Dashui Theory is a local water photo diary. No account is required. The app has no ads, tracking, or third-party analytics SDKs and does not upload your photos, water records, or usage data to developer servers.

What is stored

Photos you take or select, amounts you enter, and entry dates and times are stored on your device. Photos are compressed without original EXIF metadata. The app does not detect or verify water intake and provides no medical or health advice.

Permissions

The camera is used to take entry photos. You may decline and select an existing image instead. The system photo picker only provides the images you select. Saving a shared image to Photos may require system permission.

Sharing and backups

When you choose to share or export, content goes to the app or location you select, under that service’s privacy policy. System device backups may include app data. Complete .dashui backups include photos and records and are not encrypted. Keep them safe. There is no automatic cloud sync. Recovery after uninstalling or replacing a device requires an external complete backup or an available system backup.

Deletion and retention

You can delete individual entries. Previous record indexes, pre-migration files, and historical photos may remain locally to support recovery. Uninstalling removes the app’s local data. Manage external backups, shared content, and system backups separately at their destinations.

This website

This website is hosted by Cloudflare, which may process network request information such as IP addresses and browser information to deliver and protect the site. This is separate from local app records. The app does not send photos or water records to this website. We have not added analytics or advertising scripts.

Policy updates

This policy and relevant notices will be updated if a future version introduces networking, sync, or other data processing.