"Best" depends on what you refuse to tolerate. For most people that means: no yearly bill,
a real preview before delete, and zero fake threats. Here's a clear checklist — then how Duply fits.
What to look for
Preview before cleaning — you should see every item and uncheck what to keep
Honest pricing — one-time or clearly free; not "free" that becomes $40/year
On-device privacy — a cleaner shouldn't need an account to scan your disk
Native feel — built for macOS, not a slow web wrapper
No scare tactics — red urgency banners are a sales funnel, not a feature
Duply is built for the middle path: clean junk, find duplicates, map storage,
uninstall leftovers — preview everything, pay $4.99 once, stay on-device.
Details: Mac disk cleaner.
Want the short version? Native, private, preview-first. One coffee, once.