Start with the decision you need to make
Several saved copies of the same image are a reason to check duplicates in Photos. Several travel or portrait shots may instead have different expressions, gestures, and light. You can compare them and keep more than one.
A Mementide similarity group is comparison assistance. It does not identify the same set as Apple’s Duplicates collection or establish that any photo should be deleted.
For duplicates, check Apple Photos first
Apple Photos can identify and merge duplicate photos and videos. Detection depends on the system indexing your library. The absence of a Duplicates collection does not settle the value of visually similar shots.
Controls can differ by system version. Follow Apple’s duplicate-merging guide for current instructions.
For related shots, compare with Mementide
- Allow access to the photos you want to compare. Limited Photos access works too.
- Actively start analysis from the similar-photo comparison entry on Home.
- Consider the full scene, expressions, and context. Observations are suggestions, not a verdict.
- Keep one or several. Deletion still requires your submission and system confirmation.
Similarity analysis handles photos, within allowed access and device-resource limits. iCloud originals may need retrieval. One round is not a scan of your entire library.
Are photos uploaded for comparison?
Mementide photo analysis and similarity comparison happen on device, without uploading photos to developer servers. Apple may retrieve an iCloud original according to your settings.