UBak（拾光备份）隐私政策
最后更新：2026-09-06
UBak 是一款把 iPhone 照片和视频原件备份到用户自己的 USB 存储设备的应用。
我们收集什么
- 不收集任何数据。UBak 没有账号系统，不连接网络，不包含任何分析或广告 SDK。
应用使用的权限
- 照片库（读取）：用于列出并读取你选择备份的照片和视频原件。这些内容只会写入你在系统文件选择器中授权的外接存储设备，不会发送到任何地方。
- 外接存储：通过 iOS 系统文件选择器由你显式授权。应用只在该位置写入备份文件与用于续传的记录文件。
保存在设备上的信息
- 备份设置、你选择的备份位置的书签、本次备份会话的进度，全部保存在你的 iPhone 本地，用于续传。
- 若应用崩溃，系统（MetricKit）会生成诊断信息并保存在本地，最多 5 份。这些信息不会自动发送。
反馈
- 应用内「反馈」功能会打开系统邮件草稿，收件人为开发者。邮件内容由你自行决定是否发送；可选附带的崩溃诊断只包含设备型号、系统版本、应用版本与调用栈，不包含照片、文件名或存储内容。
儿童
- 应用不面向 13 岁以下儿童收集任何信息（事实上不收集任何人的任何信息）。
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UBak Privacy Policy
Last updated: 2026-09-06
UBak backs up the original photos and videos on your iPhone to a USB storage device that you own.
What we collect
- Nothing. UBak has no accounts, makes no network connections, and contains no analytics or advertising SDKs.
Permissions the app uses
- Photo Library (read): to list and read the originals you choose to back up. They are written only to the external storage you authorize in the system file picker and are never sent anywhere.
- External storage: authorized explicitly by you through the iOS file picker. The app writes only backup files and the small record files needed to resume.
Information stored on your device
- Your settings, a bookmark to the chosen backup location, and the progress of the current backup session are stored locally on your iPhone so backups can resume.
- If the app crashes, the system (MetricKit) may produce a diagnostic report, kept locally (at most 5). These are never sent automatically.
Feedback
- The in-app Feedback screen opens a system email draft addressed to the developer. You decide whether to send it. Optional crash diagnostics contain only the device model, OS version, app version and call stacks — never photos, file names or storage contents.
Children
- The app does not collect any information from anyone, including children under 13.
Changes
- Any change to this policy will be reflected by updating the date on this page.
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