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PowerPhotos vs Duplicate Annihilator for Photos: catalog facts
PowerPhotos	Duplicate Annihilator for Photos
Paid Paid licence with a free trial download; existing users get a 50% upgrade discount to…	Paid Paid app with a downloadable version to try before buying.
macOS	macOS
Merges Photos libraries while keeping edits and metadata Finds and removes duplicate photos	Works directly with the Apple Photos library Collects duplicates in an album for review before deletion
macOS only and tied to Apple Photos Full use requires a paid licence	Only works with Apple Photos on macOS Paid software
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.