Dedup2

Find near-duplicate photos and videos, shrink oversized ones, and backfill missing gps from nearby shots — all on your iPhone. Your media never leaves your device.

Dedup2 cleans up and enriches your photo library — and your media never leaves your device. Detection, quality scoring, and compression all run on your iPhone using Apple's on-device Vision.

FIND DUPLICATES Burst shots, retakes, and accidental copies pile up fast. Dedup2 uses Apple Vision feature prints to detect photos that look alike — not just exact copies — and groups them into clusters you can review at a glance.

Unlike the Duplicates album built into Photos, which only surfaces exact matches, Dedup2 finds visually similar photos: slightly different burst frames, retakes from a half-step to the side, and edited or re-saved copies Photos treats as separate images.

• Adjustable sensitivity — High, Medium, or Low — to control how similar photos must be before they're grouped • Automatic quality ranking marks the weaker photo in each pair, using megapixels, subject focus, face quality, and aesthetic score • Auto-select as you scroll: the lower-quality photo is marked for you, so cleaning up is just tap-and-confirm • Browse duplicates scoped to a specific year or album to tackle your library in pieces • Find duplicate videos too (experimental): a Photos/Videos switch groups near-identical clips — re-shares, repeated takes, 4K/1080p exports of one source — and flags the weaker clip by resolution, duration, and bitrate

COMPRESS LARGE PHOTOS AND VIDEOS Modern cameras produce enormous files. Dedup2 lists the photos and videos taking up the most space and resizes them to a sensible target — recovering storage while keeping quality high.

• Photos: choose a target of 4, 8, 12, or 24 MP • Videos: choose a target resolution of 720p, 1080p, or 4K — switch between Photos and Videos in the Compress tab • Sort by potential savings, resolution, file size, or date • All metadata is preserved — GPS location, timestamps, color profiles, and EXIF data stay intact • Compressed copies are saved to your library; originals move to Recently Deleted, recoverable for 30 days

BACKFILL MISSING LOCATIONS Screenshots, downloads, AirDrops, and photos taken with Location Services off often have no GPS. Dedup2 finds photos missing a location and borrows coordinates from another photo you took around the same time — so a GPS-less shot can inherit where you were.

• Configurable matching window, from ±5 minutes up to ±4 hours • Every suggestion is reviewable: compare target and donor photos, see the time gap, and preview the proposed spot on a map before applying • Sort by closest match or photo date, and scope to a year or album • Screenshots are excluded by default • Reversible — a filled-in location can be reverted in Photos at any time

PRIVATE BY DESIGN There is no account and no cloud. Analysis, quality scoring, and compression all happen locally — your media is never uploaded. The Location feature uses Apple Maps for place names and map previews, sending a photo's coordinates (never the photo itself) to Apple, like the built-in Photos app.

SAFE AND REVERSIBLE Nothing is deleted or changed without your confirmation. Removed originals go to Recently Deleted (recoverable for 30 days), and filled-in locations can be reverted in Photos — so you can always change your mind.

WORKS WITH iCLOUD PHOTOS If your library lives in iCloud, Dedup2 can fetch iCloud-only photos and videos so they're analyzed too — not just the items already on your device. You stay in control: choose Wi-Fi only (the default), Wi-Fi & cellular, or off for a strictly local scan, all from Settings.

FAST AND SMART Dedup2 caches its analysis so repeat scans are quick. Items are processed in batches and results stream in as they're found — no waiting for the whole library to finish.

Requires iOS 18 or later.

Free up space, fill in missing locations, and keep your best shots — all in one private, on-device app.

COMPLIANCE Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://tianle91.com/2026/06/09/Dedup2-Privacy-Policy.html