刪除重複照片 App(iPhone,免費)
Since iOS 16, the Photos app includes a built-in Duplicates album under Collections > Utilities that automatically identifies exact and near-duplicate photos and videos using on-device machine learning. Detection runs in the background only when the device is locked and plugged in, so it can take hours to a few days to complete on large libraries.
簡短回答
從 iOS 16 起,「照片」App 在「輔助工具」分類下內建「重複項目」相簿,會用裝置端的機器學習自動找出完全重複與幾乎重複的照片和影片。偵測只在裝置上鎖且接上電源時於背景執行,所以圖庫很大時可能要幾小時到幾天才跑完。對一組照片點「合併」後,系統會保留解析度最高、metadata 最完整的那一張,並把品質較差的重複項目移到「最近刪除」;要真正釋放空間,還得再清空「最近刪除」。
PicClear helps with this on your iPhone and works on device for privacy — a pay-once app with no subscription. Test it on a real example and check the current App Store listing for details.
挑選前要注意什麼
- Built-in: Photos > Collections > scroll to Utilities > Duplicates (requires iOS 16+ / iPadOS 16.1+)
- Detection runs automatically when device is locked and on charge — may take hours or days for large libraries
- If Duplicates album is absent, your library has no detected duplicates OR indexing hasn't finished yet
- 'Merge' keeps the highest-quality copy and best metadata; duplicates go to Recently Deleted for 30 days
- Third-party apps can find 'similar' photos (visually close but not exact) that iOS's built-in detector may miss
實用的決策步驟
- Built-in: Photos > Collections > scroll to Utilities > Duplicates (requires iOS 16+ / iPadOS 16.1+).
- Detection runs automatically when device is locked and on charge — may take hours or days for large libraries.
- If Duplicates album is absent, your library has no detected duplicates OR indexing hasn't finished yet.
- 'Merge' keeps the highest-quality copy and best metadata; duplicates go to Recently Deleted for 30 days.
- Third-party apps can find 'similar' photos (visually close but not exact) that iOS's built-in detector may miss.
快速比較
| 需求 | 要確認什麼 | 為什麼重要 |
|---|---|---|
| 定價模式 | 確認實用功能是需要訂閱、一次性解鎖,還是都不用。 | 第一天最便宜的 App,一年後不一定最便宜。 |
| 隱私模式 | 內容敏感時,優先選在裝置上處理的 App。 | 私人文件、履歷、學習資料與家庭內容,都值得謹慎對待。 |
| 匯出/綁定 | 確認檔案格式、分享、備份與刪除的控制權。 | 好的 App 應該幫你完成任務,而不是把你的成果綁死。 |
PicClear 適用情境
PicClear is a strong fit when you want a focused, private, pay-once tool for this.
隱私無廣告裝置端處理
這是由 App 開發團隊親自撰寫的購買指南。App Store 的功能與價格可能會有變動，請在購買前至商店頁面確認詳細資訊。
常見問題
What iOS version has the built-in duplicate photo detector?
The Duplicates album is available on iOS 16 and later for iPhone, and iPadOS 16.1 and later for iPad. It is not available on older iOS versions.
What does 'Merge' actually do to duplicate photos?
iOS combines the highest resolution copy with the most complete metadata (location, date, edits) into a single photo, then moves the other copies to the Recently Deleted album. The result is one clean, best-quality image.
Does the Duplicates album find similar-looking but not identical photos?
Apple's built-in detection targets exact duplicates and near-exact matches (same image in different formats or resolutions). It does not flag shots from a burst series or photos that merely look similar — third-party apps offer that broader 'similar photo' detection.