Practical app guides
Ways to sort your iPhone photo library: built-in tools and apps
A library full of duplicates, a library with no albums and a library full of almost-identical memories are different problems. Choose the tool for the job before granting another app access to your photos.
Start with Apple Photos for detected duplicates. Consider Slidebox for album organisation, CleanMyPhone for suggested cleanup groups, and Lighter for completely free manual photo sorting, with no ads, account or tracking and review before deletion.
| Option | Consider it for | Approach | Payment model | Trade-off |
|---|---|---|---|---|
 Apple Photos | Detected duplicates | Merge items in Duplicates | Included with iPhone | Detected duplicates are not every similar shot. |
 Slidebox | Albums and favourites | Gestures and album sorting | Free download; in-app purchases | Check paid feature limits in the app. |
 CleanMyPhone | Suggested cleanup groups | Finds duplicates, similar shots and other clutter | Free download; subscription features | Suggestions still need your judgement. |
 Lighter | Manual keep/delete review | Chronological photo sorting with saved progress | Completely free; no ads, account or tracking | No automatic duplicate detection; excludes videos and hidden photos. |
Match the tool to the photo problem
Apple Photos: try the built-in duplicate tool first
Apple Photos detects duplicate photos and videos and offers a merge action in the Duplicates collection. Apple says the collection does not appear if no duplicates are found. It is a good first check because it requires no extra download. It does not settle which expression or moment you prefer in several different shots. Read Apple’s duplicate-merging instructions.
Slidebox: useful when the destination is an album
Slidebox combines photo gestures with album sorting, favourites and comparison of similar shots. Its listing describes working directly with the Photos library. Consider it if “where should I put this?” is your main question. It is a free download with in-app purchases; inspect current limits and purchase options before organising a large library. See Slidebox on the App Store.
CleanMyPhone: useful when you want suggestions
MacPaw’s CleanMyPhone lists scans for duplicates, similar images, blurred photos, screenshots and large videos, plus automatic categories. The listing says photo processing stays on the device and that users choose what is removed. It is a free download with subscription features. This is a broader approach than manually reviewing every photo, but a suggested group cannot tell you which imperfect memory matters. See CleanMyPhone on the App Store.
Lighter: completely free manual sorting, without ads or an account
Lighter is completely free, with no ads, no account and no tracking. It is an iPhone and iPad app for manually sorting photos from oldest or newest first. Swipe left to mark a photo for deletion and right to keep it. Undo a choice, open a photo for a closer look and return later with progress saved locally.
A swipe alone never deletes a photo. Review the marked selection, confirm in Lighter, then approve the Apple Photos deletion request. Full or limited Photos access is supported. Lighter does not upload photos and has no account, ads or tracking. It requires iOS or iPadOS 18 or later. It is not an automatic duplicate finder, does not organise albums and excludes videos and hidden photos. If you want scan-generated suggestions, a different option fits better. See Lighter on the App Store.
A practical order of work
- Name the problem. Duplicates, finding photos and deciding what to keep need different tools.
- Try the built-in option. You may not need another app.
- Test a small group. Check a tool’s selection and deletion flow before using it on years of memories.
- Review uncertain photos at full size. Sharpness is not the only reason to keep a photo.
Keep the photo if you are unsure. There is no target number you need to delete. Our keep-or-delete guide gives examples for repeated shots, screenshots and imperfect memories.
Before you delete
Does deleting on iPhone also delete from iCloud?
With iCloud Photos enabled, deletions sync to other devices using the same Apple Account. iCloud Photos is not a separate archive that preserves a photo you delete. Back up anything you still need before cleanup. Read Apple’s deletion guidance.
Can deleted photos be recovered?
Apple normally keeps deleted photos and videos in Recently Deleted for 30 days. Permanently deleting them there removes that recovery option. Do not empty it just to finish a cleanup quickly.
Which app frees the most space?
We have not run a storage benchmark. Results depend on the library and what you choose to remove. A manual photo-only sorter and a tool that also handles large videos cannot be ranked fairly without the same test library and conditions.
Sources and method
This is a research-based comparison, not a hands-on test of every app. We checked official U.S. App Store listings and developer or Apple documentation on 28 October 2026. Features describe those sources; recommendations are our judgement about fit. The shortlist covers distinct approaches, not every available app, and is not a ranking of measured results.
Payment models are shown instead of a single headline price because storefronts, eligibility and offers vary. Check the current purchase screen and required iOS version. Developer descriptions and App Store privacy labels are not independent audits.
- Apple: merge duplicate photos
- Apple: delete and recover photos
- Slidebox on the App Store
- CleanMyPhone on the App Store
- Lighter on the App Store
Related: all practical app guides. Found an error? Send a correction.
Disclosure: Lab&Co develops Vocab First and Lighter, which are included where relevant. We have a financial interest in Vocab First subscriptions. Lighter is free. These guides use direct links, not affiliate links, and no app has paid for placement.