What should a Mac photo cleaner actually solve?
A serious cleaner should solve library quality, not only disk usage. Users need fewer duplicates, fewer blurry shots, better structure, and faster retrieval. Storage savings matter, but clarity and maintainability are the long-term value metrics.
The best tools align detection methods with real-world photo problems: exact duplicates from sync, similar images from burst or edits, and noisy captures from motion or low light. If those categories are not handled explicitly, cleanup remains incomplete and clutter rebounds quickly.