Last updated: August 2026 · Applies to SizeCap for iPhone, version 1.0
SizeCap collects no data. The app has no account system, no analytics, and no advertising. It contains no networking code of its own, so your videos stay on your iPhone.
When you pick a video, iOS hands SizeCap a copy through the system photo picker; the app never sees the rest of your library. Compression runs through Apple's video toolchain on the device. Nothing you pick is uploaded to me or to any third party, and your original video is not modified.
The compressed file is written to the app's own sandbox and goes wherever you send it: your Photos library or another app you share to. Once it leaves SizeCap, the receiving app's own rules apply. Working files are cleaned up when you start over or relaunch the app.
SizeCap asks for one permission: adding videos to your photo library, and only when you tap "Save to Photos". It never asks to read your library, because the system picker makes that unnecessary.
Nothing. There is no server, no crash reporter, and no analytics SDK. If you email me for support, I see what you choose to put in the email, and that stays between us.
If a future version ever changes any of this, the change will be listed here with a date, and the App Store privacy label will be updated to match.
最近更新：2026 年 8 月 · 适用于 iPhone 版 SizeCap 1.0
SizeCap 不收集任何数据。这个 app 没有账号体系、没有统计分析、没有广告，自身不含任何联网代码，你的视频不会离开你的 iPhone。
选视频时，iOS 通过系统选择器把一份副本交给 SizeCap，app 看不到你相册里的其他内容。压缩由 Apple 的视频框架在设备上完成。你选的内容不会被上传给我或任何第三方，原视频也不会被修改。
压缩后的文件写在 app 自己的沙盒里，去向由你决定：存入相册，或分享给别的 app。离开 SizeCap 之后，适用的是接收方 app 自己的规则。工作文件在你重新开始或重启 app 时清掉。
SizeCap 只申请一项权限：向相册里添加视频，而且只在你点「存入相册」时才会弹出。它从不申请读取相册，因为系统选择器让这件事没有必要。
什么都看不到。没有服务器、没有崩溃上报、没有统计 SDK。你写邮件找我时，我只能看到你自己写进邮件里的内容。
如果将来的版本改变了以上任何一条，会在这一页注明日期，App Store 的隐私标签也会同步更新。