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Features

Everything Taskglass does, shown working.

Taskglass tells you what's slowing, heating or draining your Mac, and what to do about it. Every card below is the app's own interface, with simulated numbers.

macOS 14+6 MBOne-time purchaseUp to 3 Macs

Apps, not processes.

Helpers sit under the app that launched them, so Chrome is one row with one honest total, not forty lines of “Helper (Renderer)”.

Apps & Processes

612 processes grouped into 341 rows. Helpers live under the app that owns them.

NameCPU Memory
    • and 36 more helpers, each under 1% CPU

321 more rows, all idle. The numbers here are simulated.

Know what it is before you quit it.

Plain English for 214 macOS processes: what it is, why it's busy and what to do. The “Is this safe?” badge reads the code signature.

WindowServer

Apple · Part of macOS · PID 401

Part of macOS

Signed by Apple. This is a genuine part of macOS.

What is it?

Draws every window, menu and animation you see on screen, and routes your clicks and keystrokes.

Why it gets busy
  • Many open windows, or apps that redraw constantly (animated web pages, video, games)
  • Several or high-resolution external displays, especially at scaled resolutions
  • Transparency and motion effects, Stage Manager, or many desktops with live content
What you can do
  • Close windows and browser tabs you don't need, especially ones playing video or animation
  • Quit apps one at a time and watch whether WindowServer drops, to find the trigger
  • Turn on Reduce transparency and Reduce motion in System Settings > Accessibility > Display

Don't quit this

Force quitting WindowServer instantly logs you out and closes all your apps, so unsaved work is lost.

More about WindowServer

Hear about a runaway app before your fans do.

Smart alerts for runaway CPU, memory that keeps growing and heat. Quit the culprit right from the notification.

Slack is using a lot of CPU

now

92% of a core for 5 min. This drains battery and heats your Mac.

Simulated. The real alert appears in Notification Center.

30 days of history, with the moments marked.

CPU, memory pressure, temperature and power for the last 30 days. Taskglass marks the moments that matter, so you can see what spun up the fans during a call.

CPU · last 24 hours

Today, 2:12 PM

CPU
70%
Temp
73°
Power
28 W

Your Mac is running hot

zoom.us was screen sharing while Chrome played video.

Drag across the chart, or use the arrow keys.

Battery drain by app, in watts.

Real per-app power on Apple Silicon, not an “energy impact” score. See what drained the battery since you unplugged, and your battery's health.

Power right now

Whole Mac
11 W

What drained your battery

Google Chrome used 60% of the energy your apps used since you unplugged.

  • Google Chrome60%
  • zoom.us17%
  • Slack9%
  • photoanalysisd6%
  • Claude4%

40+ temperature sensors.

CPU, GPU, SSD, battery and more on Apple Silicon, with fan speed alongside. No admin rights needed.

43°
CPU average
47°
Hottest core
41°
Graphics
  • Memory40°
  • SSD38°
  • Battery35°
  • Wi-Fi42°
  • Palm rest31°

Memory pressure first.

Pressure is what slows a Mac, not “used” memory. The RAM Advisor turns 30 days of it into one answer: is your memory enough?

Memory

What's really using your 16 GB, and whether you need more.

Normalmemory pressure51%

macOS has room to spare. High "used" memory is fine: macOS keeps files cached so apps open faster.

Where your memory is

13 GB used of 16 GB
  • App memoryUsed by your apps right now.9.7 GB
  • WiredLocked for macOS itself; can't be moved or compressed.2.1 GB
  • CompressedSqueezed by macOS to make room. Some is normal.922 MB
  • Cached filesRecently used files kept for speed. Freed instantly when needed.2.2 GB
  • FreeTruly unused. On a Mac this is usually small, and that's fine.1.1 GB

RAM Advisor

16 GB is enough for how you work.

You hit memory pressure 2% of the time, usually when many heavy apps are open together.

Time under pressure
2.4%
Peak swap
1.8 GB
Peak used
15.1 GB
Observed
29d 14h

Using the most memory

Network and disk, per app.

How much data is moving, and which apps are writing to your SSD.

Network & Disk

How much data is moving, and which apps are writing to your SSD.

Network

Download
1.6 MB/s
Upload
199 KB/s

Disk activity

Read
8.7 MB/s
Write
2.4 MB/s
Macintosh HD412 GB free of 994 GB

Apps using the disk

Also included

Small things you'd miss.

  • Quit and Force Quit

    Quit an app or a single process from the Explain panel. Parts of macOS are protected, so you can't break your Mac by accident.

  • Exact numbers for system processes

    An optional read-only helper measures macOS's own processes, like WindowServer and kernel_task, exactly. It can't change or quit anything.

  • download
    6 MBdownload
    CPU in background
    0.2%CPU in background
    CPU, window open
    ~2.5%CPU, window open

    Native and light

    Native Swift, a 6 MB download. About 0.2% CPU in the background and ~2.5% with the window open.

  • Updates built in

    Updates install from inside the app, and a short “What's new” sheet shows what changed.

    • No account
    • No analytics
    • History stays on this Mac

    Nothing leaves your Mac

    No account and no analytics in the app. It goes online only to activate your license and check for updates. Read the privacy policy

    • English
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    • 日本語
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    Speaks 9 languages

    The app follows your Mac's language, or pick one in Settings › General › Language.

Pay once. Use it on 3 Macs.

One license covers up to 3 Macs, with every 1.x update and a 30-day money-back guarantee.

Launch pricing: 100 left at $5, then $9