iOS 18 或更新版本 · 一次买断，无订阅 Requires iOS 18 or later · One-time purchase
滑动去留、整理即归档、相似照片分组对比。 全程在你的 iPhone 本地完成，不上传任何照片数据。 Swipe to keep or delete, file the keepers into an album as you go, and compare near-duplicate bursts side by side. It all runs on your iPhone — no photo ever leaves it.
整理照片之所以做不完，是因为它没有终点。 轻轻把整个相册切成一小组一小组，每一组都能在几分钟内真正结束。 Cleaning up a photo library usually fails because it has no finish line. Feather cuts the library into small batches, and each one can genuinely be finished in a couple of minutes.
盲盒随机、去年今日、按月、按媒体类型（截屏 / 实况 / 自拍 / 人像等）、按相簿。 先决定「看哪一批」，再开始滑。 Shuffle, On This Day, by month, by media type (screenshots, Live Photos, selfies, portraits), or by album. Decide which batch you're facing before you start.
向下轻滑就把这一张归入相簿，中途横移还能改目标。 不用整理完再回照片库做第二遍。 A downward swipe files the photo into an album; slide sideways mid-gesture to aim at a different one. No second pass in the Photos app.
连拍与重复照片自动聚成一组，并且进组时已经替你选好推荐保留的那张—— 你只需要否决，不需要从头挑。 Bursts and repeats are clustered automatically, and the group opens with a recommended keeper already chosen. You only pay the cost of overriding it.
删除时实时显示已释放空间。照片进入系统「最近删除」， 30 天内随时可以完整恢复。 Freed space is shown as you go. Photos move to the system "Recently Deleted" album and can be restored in full within 30 days.
轻轻没有服务器，没有账号体系，没有任何分析或广告 SDK。 所有照片分析——包括相似度比对——都使用 iOS 的系统框架在你的设备本地完成。 Feather has no server, no account system, and no analytics or advertising SDKs. All photo analysis — including similarity matching — runs through Apple's on-device frameworks, on your iPhone.
唯一会产生网络流量的情形，是把你自己存在 iCloud 里的照片下载回本机以便分析。 方向是「你的 iCloud → 你的设备」，由 Apple 的系统框架完成， 照片不会、也无法流向我们或任何第三方。扫描时界面会实时显示下载了多少张， 并标明「只下载，不上传」。 The only network activity it can cause is downloading your own photos from your own iCloud library so they can be analysed. The direction is iCloud → your device, handled by Apple's frameworks. Nothing flows to us or to any third party — we have no server to receive it. The scan screen shows how many photos were fetched, labelled "download only, never upload".
App Store 隐私标签：不收集数据 App Store privacy label: Data Not Collected
