The Duplicate Challenge

How many copies of one photo are on your Mac?

Someone just found hundreds of copies of the same photo buried on their Mac — re-saved screenshots, AirDrops, WhatsApp re-downloads, backups of backups. Run Dup, find your number, and challenge whoever sent you here.

Find your number

Dup scans your Mac on-device — nothing is uploaded — and shows the most-duplicated file in your library. Free up to 250 MB of deletions without a license.

Dup is a Mac app. Find your number, post it, and tag a friend — see who's the bigger digital hoarder.