Comparisons

One index or two

Updated 2026-07-31 · 4 min read

Running a second file index is a real decision with real costs. Here is when it is worth it and when it is not.

What a second index costs

• Disk — a filename index is small (hundreds of MB), a content index is not
• A background process watching for changes
• Money, for the good ones
• A little cognitive overhead — two hotkeys, two mental models

None of it is free, and pretending otherwise does nobody a service.

When it is clearly worth it

• You search by filename many times a day — the speed compounds
• You routinely need ~/Library: mail attachments, app data, container files
• You work with external/archive drives that are usually unplugged
• Your disk is large enough that Spotlight-backed search has become slow
• You came from Everything and the loss is a daily papercut

When it is clearly not

• Spotlight already finds what you need at a speed you do not notice
• You search a few times a week
• Your files live in a few folders you know well
• You mostly search *content* (phrases in documents), which Spotlight does well and a

filename index does not do at all

The honest test

For one week, notice every time file search disappoints you — slow, incomplete, or outright wrong. If that is once or twice, keep your money; Spotlight is fine and free. If it is several times a day, the papercuts are real and a second index removes a specific, recurring friction.

Not either/or

The common setup is both: Spotlight for content, launching, maths and system search; a filename index for locating files fast and completely. They share nothing, conflict nowhere, and each covers the other's weakness. Adding one does not mean abandoning the other — and for most people who add one, that is exactly why it sticks.

Common questions

Is it worth paying for a file search app if I have Spotlight?

Only if Spotlight's specific failures — speed, ~/Library, external drives, filename ranking — cost you time regularly. Otherwise Spotlight is fine.

Do two search indexes slow a Mac down?

A filename index is light and event-driven. The overhead is minor; the question is whether the benefit justifies any at all.