How much of your workday goes to AI assistants, measured on a Mac

27 September 2026 · 6 min read

To measure your time spent using AI at work on a Mac, you need two numbers: time in any assistant you run as a desktop app, and time on assistant websites inside your browser. macOS shows the first reasonably well and folds the second into one big browser total. A record that splits browser time by site, read at the end of each day for a week or two, gives you both. Then the useful question becomes whether that time replaced work or added to it.

Why the number is hard to guess

AI assistants blur into the rest of the day. You ask a question in one window, paste the answer into a document, check it, ask again. None of it feels like a separate activity, so nobody remembers it as one. At the end of the week, the honest answer to “how long did I spend with the assistant” is usually a shrug.

The time hides in three places:

A desktop assistant app. This is the easy case. It is an app like any other, and anything that counts time per app will list it.
An assistant in a browser tab. This is the common case, and the hard one. To most time records it is just more browser time, mixed in with email, documents and everything else you do on the web.
Assistant features inside other apps. When a writing or coding tool offers suggestions inside the app you are already using, the time belongs to that app. Apple’s Writing Tools, for example, work inside the app you are writing in, so the time counts as that app. That is fair: you were writing.

What macOS already shows you

Screen Time is the free starting point.

Open System Settings and choose Screen Time.
Open App and Website Activity. If it is off, turn it on; it only records from that moment forward.
Look at the app list for today or the past week. A desktop assistant app shows up with its own time.

Screen Time can also list websites you visited in Safari, which helps if Safari is where you use an assistant. It is less helpful for a working day spread across other browsers, and it is built for general screen use rather than for reading a workday at a glance. How to use Screen Time on a Mac for work goes through what it does well and where it stops.

Counting assistant time with Punchcard

Punchcard is a Mac menu bar app that notices which app is in front during your day and prints a receipt at the closing time you set: your top five lines with time on each, the rest as MISC, and a day total. Out of the box it records app names only, never window titles, page contents or keystrokes. That matters here, because what you type into an assistant can be private.

For a desktop assistant app, nothing needs setting up. If it is one of your five biggest lines, it prints with its own time.

For assistants in the browser, switch on Itemize websites in Punchcard’s Settings. Browser time then prints as the sites you used, each on its own line, competing with apps for the top five. A few details decide how the number reads:

Only the site name is kept. The record says which assistant site you were on, never the full address, the page title or what you asked.
It works in several browsers, but not Safari. The supported ones are covered in tracking website time in other browsers. Safari time stays one line, for a reason about private windows explained in why website time tracking skips Safari.
Private windows are never read. Time in an incognito or private window stays on the browser’s own line.
Visits under a minute stay on the browser’s line. A quick one-question lookup will not get its own line. That keeps the receipt readable, and it means the assistant line is time you actually sat with it.

The day total never changes either way; itemizing only splits the browser’s time into its parts.

If you want more detail, the CSV export has one row per session with a start and end time, and the site when itemizing is on. Filter it for the assistant’s site name and you can see whether the time came in one long stretch or in dozens of short visits scattered across the day. Those are different habits, and they call for different fixes.

Reading the number honestly

The receipt tells you how long, not how well. Thirty minutes in an assistant might have replaced three hours of drafting, or it might have been thirty minutes of rephrasing the same question. Two comparisons help.

Assistant time against the task it serves. If you use an assistant for writing, look at the assistant line next to your writing app’s line over the same days. If both grew, the assistant is adding work. If the writing line shrank and the day total did not grow, it may be saving time.

Before and after. If you started using an assistant recently, or want to try a week without one, the day totals and lines on either side of the change are your evidence. How to tell if a productivity change actually worked covers setting up that comparison fairly.

Also watch for assistant time that lands at the end of the day. Late rounds of “one more try” at a prompt can feel productive without being so, and they are easy to spot on a receipt that prints at your closing time.

A two-week check

Switch on Itemize websites if your assistant lives in a supported browser, and approve the one-time macOS prompt for that browser.
Work normally for two weeks. Do not try to use the assistant more or less than usual.
Each evening, glance at the receipt. Note the assistant line, if it made the top five, and the day total.
On the second Sunday, read the week roll. Compare the assistant’s share of the week with what you would have guessed on day one.
Decide one thing: keep going as you are, move assistant use to a set part of the day, or cut it back for a task where it was not helping.

Tracking and the CSV export are free and never expire. The first two receipts are free too; printing after that needs a license.

Questions

Can Punchcard see what I type into an assistant? No. It records the app name and, with Itemize websites on, the site name. Never page contents, titles, full addresses or keystrokes.

My assistant is in Safari. What will I see? One Safari line with all your Safari time. Screen Time’s website list is the better place to check individual Safari visits.

Does counting a desktop assistant app need any permission? No. Counting apps needs no macOS permissions at all. The one optional permission is Automation, and only if you switch on itemized browsing.