Photo Cleanup vs Apple Photos: Which Finds More Duplicates?

Apple Photos has a built-in Duplicates album and it works well — for exact copies. Photo Cleanup handles the broader category: visually similar photos that differ at the file level. If you only have exact duplicates from syncing between devices, Apple Photos is enough. If you have burst sequences, repeated shots, or near-duplicate screenshots, Photo Cleanup finds what Apple misses.

What “Duplicate” Actually Means

The word duplicate hides a meaningful distinction. There are two kinds of duplicate photos:

Exact duplicates: Two files that are byte-for-byte identical. Same pixels, same metadata, same file hash. These happen when you sync a photo from iCloud, copy it between devices, or share it to yourself. One is a literal copy of the other.

Similar photos: Two files that are visually almost identical but technically different. Burst mode frames. Two shots of the same subject taken a second apart. A screenshot and a cropped version of the same image. These are not copies — they are distinct files that happen to look nearly the same.

Both kinds waste storage. But they require different detection methods to find.

Fact: Apple’s Duplicates feature launched in iOS 16 and uses perceptual hashing to find exact or near-exact file copies. It does not use image-content analysis for visually similar shots.

The Comparison

Where Apple Photos Wins

Apple Photos’ Duplicates feature has one clear advantage: it’s built in and requires no additional app. For people whose duplicates come primarily from syncing — iCloud, AirDrop, importing from a camera — Apple’s tool handles it with a single “Merge” tap.

The merge action is also smarter than a simple delete. When Apple merges two exact duplicates, it keeps the version with the highest quality and preserves metadata (favorites, albums, captions) from both copies. You don’t have to think about which one to keep.

Fact: Apple Photos Duplicates album uses the same perceptual hashing that powers iCloud’s deduplication layer. Two photos merged this way retain all associated metadata from both originals.

For exact duplicates, Apple Photos is the right first pass. Use it, run it, let it merge. It’s free, it’s fast, and it requires zero decisions.

Where Photo Cleanup Wins

Once exact duplicates are cleared, the bulk of wasted storage typically comes from similar photos — and that’s where Photo Cleanup’s detection approach matters.

Photo Cleanup uses Apple’s Vision framework to generate a feature print for each image. A feature print is a compact mathematical representation of an image’s visual content — edges, colors, textures, spatial relationships. Two photos of the same subject taken one second apart will have very similar feature prints even though their files are completely different.

This is the category Apple Photos cannot handle. Burst sequences. Two shots of a meal where you adjusted the angle slightly. A dozen attempts at a group photo where everyone finally smiled in one of them. Photo Cleanup surfaces these groups and lets you compare them side by side.

Fact: Apple’s Vision framework — the same framework used by Photo Cleanup — is used in production by apps like Halide, Darkroom, and various document scanning apps for content-aware image analysis.

The review experience is also different. Apple Photos offers a Merge button. Photo Cleanup shows you each photo in a group, tells you which one it recommends keeping and why (resolution, recency, whether it’s favorited), and waits for your confirmation. Nothing is deleted without your explicit approval.

See How It Works for the full detection pipeline detail.

The Honest Answer: Use Both

This is not a competition where one tool wins. They solve different problems.

Use Apple Photos first to clear exact duplicates. Open Photos, tap Albums, scroll to Utilities, tap Duplicates, merge everything. Takes two minutes. Done.

Then use Photo Cleanup to find the similar photos that Apple missed — the burst frames, the repeated attempts, the near-duplicate screenshots. These are the photos that require judgment, which is why Photo Cleanup’s design centers on reviewing one group at a time rather than bulk-merging blindly.

The combination covers both categories. Apple Photos handles exact copies instantly. Photo Cleanup handles the messier, harder-to-find similar shots at a pace that keeps you in control.

What Photo Cleanup Does Not Do

It’s worth being direct about the limitations.

Photo Cleanup does not offer a one-tap “delete all duplicates” mode. This is a deliberate design choice. Similar photo detection involves judgment calls — the app might group two photos that you consider meaningfully different. Requiring per-group review means you stay in control. Read more about the design philosophy.

Photo Cleanup also does not merge metadata the way Apple Photos does. When you delete a photo, it goes to Recently Deleted. The kept photo retains its own metadata only. If you’ve captioned or favorited a photo you subsequently delete, that metadata is gone.

Fact: Both apps use PHAssetChangeRequest.deleteAssets for deletions, which moves photos to Recently Deleted rather than permanent deletion. The 30-day recovery window applies to both.

Why Not Apple Photos for Everything?

The core limitation is architectural. Apple Photos’ Duplicates feature is designed for the sync-and-backup use case — finding photos that ended up in your library twice because of how you moved them between devices. The algorithm is optimized for that specific problem.

Similar photo detection requires a different kind of analysis: comparing image content rather than file identity. That’s a more expensive computation, and it produces results that require human review to be safe. Apple hasn’t built that into the Photos app, possibly because it’s harder to do safely at scale.

Photo Cleanup fills that gap. It’s not a replacement for Apple Photos — it’s a complement. See why Photo Cleanup exists.

FAQ

Does Photo Cleanup replace Apple’s Duplicates feature?

No — run Apple’s Duplicates first, then Photo Cleanup. Apple handles exact copies quickly and with a smart merge. Photo Cleanup handles similar shots that require visual comparison. Using both covers the full spectrum of duplicate types.

Will Photo Cleanup find duplicates that Apple already merged?

No. Once Apple merges two exact duplicates, only one copy remains in your library. Photo Cleanup only analyzes photos currently in your library.

Is it safe to delete photos that Photo Cleanup suggests?

Yes. Deletions go to Recently Deleted in the Photos app and stay there for 30 days. You can restore any photo within that window. Photo Cleanup never permanently deletes anything — that only happens when Apple’s 30-day window expires or you manually empty Recently Deleted.

Does Photo Cleanup work offline?

Yes. All detection runs on-device using the Vision framework. Photo Cleanup does not require an internet connection for scanning or reviewing. See the Privacy page for details on what data stays on your device.