Why is my Mac slow? Ask Tidy My Mac

Why is my Mac slow? The usual reasons

A slow Mac rarely has one mysterious cause. It is usually one of a handful of things, and each leaves a trace you can measure:

• One app keeping the processor busy, often a browser tab, a sync tool or an app stuck in a loop, long after you stopped using it.
• Memory pressure. When RAM runs short, macOS compresses memory and moves some of it to the SSD, which is much slower than RAM.
• Heat. A hot Mac slows its own processor down to cool off.
• Too many startup items, which make the Mac slow to start and keep working in the background afterwards.
• A nearly full disk. macOS and apps start failing when the startup disk fills up.

Finding which one applies usually means reading Activity Monitor, Storage settings and Login Items side by side. Ask reads the same kind of numbers for you and answers in a few plain sentences.

What Ask looks at

Ask doesn't guess from general advice about Macs. It works from the facts the other sections of Tidy My Mac have already gathered on this Mac:

The answer is two or three sentences, followed by up to four findings, most important first. Each finding names what was found, with its numbers, and has a button that opens the section that deals with it. Ask suggests three starting questions: Why is my Mac slow?, Why is my disk full? and Why does my Mac take long to start?, and you can type your own in any language Apple Intelligence supports.

Answers from measurements, not guesses

Ask is told to answer only from what those sections returned, and never to make up a number, an app or a folder. If something hasn't been scanned yet, it says so and points you to the section that finds out. Running a Smart Scan first gives it the most to work with.

Ask never cleans, deletes or changes anything. It explains and points; the fixing happens in the section it links to, where you see the full list before anything is removed. Each answer carries a reminder to check the numbers in that section before you act, because a language model can still get a detail wrong.

Every question starts fresh, so ask each one in full rather than as a follow-up to the last.

On your Mac, with Apple Intelligence

Ask needs a Mac that supports Apple Intelligence, with Apple Intelligence turned on in System Settings. Right after you turn it on, macOS may still be downloading the model; Ask tells you when that is the reason it can't answer yet.

Without Apple Intelligence

On a Mac without Apple Intelligence, Ask shows what Tidy My Mac's own rule-based checks say instead: an app that has kept the CPU busy, memory pressure, heavy swap, a Mac running hot, a battery that macOS says needs service, or an SSD that reports a problem. Each comes with a link to Performance. If nothing stands out, it says so.