For Mac and Windows

For things you only need for now.

Press ⌘C twice and what you copied goes into a small space at the edge of your screen, right beside what you're comparing. No new file, no saving, nothing to clean up afterwards.

Coming soon to the Mac App Store and the Microsoft Store. Free to download; KnackTack Pro is a one-time purchase, with no subscription.

Shown on a Mac. On Windows you press Ctrl+C twice, and spaces work the same way.

Sound familiar?

A few minutes of comparing. Eight steps of setup.

Your software vendor has sent a link to its new terms, and you want to push back before you renew. To make your case, you need last year's PDF agreement, the new terms in your online account, and a competitor's terms on its website, all in view at once. Three sources, three different wordings, and none of it belongs in your email.

The same thing happens when you compare prices across shopsfill in a form from an emailcheck a translation against the originalcompare two screenshots

The usual way 8 steps

  1. Find the payment clause on page 2 of last year's PDF, copy it
  2. Open TextEditNotepad, make a new document, pasteExtra app, extra file
  3. Find the billing section in the new online terms, copy, another new document
  4. Copy the competitor's pricing terms, a third document
  5. Arrange three windows beside your email, and find them again each time they slip behindHard to keep side by side
  6. Write your reply
  7. Close up: “Do you want to keep this new document?” Delete. Delete. Delete.Close up: “Save changes to Untitled?” Don't save. Don't save. Don't save.Clutter to clean up
  8. Vendor writes back tomorrow? Do it all againGone after shutdown

With KnackTack 2 steps

1

In each of the three, select the part you need and press ⌘C twice.Each one slides to the right edge of your screen and stays on top, labeled with where it came from.

2

Write your reply with all three in view.When the vendor answers tomorrow, they're still there.

That's it. No file names, no Save dialog, nothing to tidy up later.

Recorded on a Mac. On Windows the same steps use Notepad and Ctrl+C.

How KnackTack fixes it

Built for keeping something in sight, not for keeping files.

01 Open an app, make a new file

No new file. Just press twice.

Press ⌘C twice in any app, and what you copied slides into a space on the right edge of your screen. A single ⌘C still copies as usual.

  • Text, links and images, screenshots included.
  • Prefer the mouse? Choose Put What You Copied in a Space from the KnackTack menu bartray icon.
A space on the right edge of the screen holding a copied paragraph
02 Scratch files mixed in with real ones

Nothing to name. Nothing to clean up.

No file name, no Save button, nothing left in your Documents folder. Everything saves as you type, and a space clears itself 7 days after your last edit.

  • Deleted too soon? Bring it back from Recently Deleted.
  • Need a real file after all? Share the space as a .txt, .rtf or .png file, or drag it to your desktop.
Spaces showing days left, with no file names or Save button
03 Gone after a restart

Still there tomorrow.

Restart or shut down for the night. Your spaces come back with their content, size and place on screen.

  • A day before a space expires, it reminds you, with a Pin button.
  • Pinned spaces never expire.
Spaces back after a restart, one showing an expiry reminder with a Pin button
04 Hard to see side by side

Right beside what you're comparing.

Spaces stay on top and line up along the right edge, so they never slip behind the page you're reading. Make them see-through if you like.

  • With Pro, keep up to 10 spaces and lay them out Side by Side. PRO
  • Tuck them into the screen edge when you need the room.
05 Back to the source

One click back to where it came from. PRO

Each space remembers the page you copied from. Click the address at the bottom of a space, and your browser opens that page, scrolled to the text you copied and highlighted.

  • Check the original wording before you quote it.
  • Jump between sources without hunting through tabs.

Privacy

What you copy stays on your computer.

An app that sees what you copy should earn your trust. So KnackTack is built to know as little as possible, and to tell no one.

No account

Nothing to sign up for. No email address, no login.

Never uses the network

KnackTack itself makes no internet connections. Links you click open in your own browser.

No tracking at all

No analytics, no crash reporting, no ads, no usage logs. Not even on your own computer.

Stays on this computer

Spaces, sources and settings live only on your computer. Nothing to sync, nothing to leak.

Why KnackTack asks for Input Monitoring. macOS needs your permission before an app can notice a key press. KnackTack only listens for ⌘C, so it knows when you press it twice. It doesn't record any keys, and it never changes or blocks them. If you'd rather not grant it, use a keyboard shortcut instead, and the permission isn't needed at all.

What KnackTack watches on the keyboard. To notice when you press Ctrl+C twice, KnackTack watches for that one key combination and nothing else. It doesn't record any keys, and it never changes or blocks them. It never asks for administrator rights. Prefer a keyboard shortcut instead? Then KnackTack stops watching the keyboard altogether.

Read the full privacy policy →

Pricing

Free to use. Pro, once.

Everything you've read about works in the free version, one space at a time. KnackTack Pro is a single purchase. No subscription, no trial that runs out.

Free

$0forever

  • 1 space at a time
  • Press ⌘C twice, or use your own shortcut
  • Stays on top, adjustable opacity
  • Saved automatically, back after restart
  • 7-day expiry, reminder and Pin
  • Source app and website, tuck away, share as a file
  • Recently Deleted keeps the last 5

KnackTack Pro PRO

One-timepurchase, yours to keep

  • Everything in Free, plus
  • Up to 10 spaces at a time
  • Side by Side: lay every space out at once
  • Pile: stack spaces and pull them open
  • Jump back to the exact spot on the web page
  • Recently Deleted keeps the last 10

Buy KnackTack Pro inside the app. Purchases and refunds are handled by the Mac App StoreMicrosoft Store. KnackTack Pro is bought separately for Mac and for Windows.

Mac and Windows

Same idea, at home on both.

KnackTack for Mac

Put in a space
Press ⌘C twice
Lives in
The menu bar
Requires
macOS 14.6 Sonoma or later
Coming soonfor Mac

KnackTack for Windows

Put in a space
Press Ctrl+C twice
Lives in
The system tray
Requires
Windows 11, version 22H2 or later
Coming soonfor Windows

Questions

Good to know

Is KnackTack a clipboard manager?

No. A clipboard manager keeps a history of everything you copy. KnackTack keeps nothing unless you ask: only what you copy by pressing ⌘C twice goes into a space. Everything else you copy is left alone.

Does a single ⌘C still work normally?

Yes. One press copies exactly as before, and KnackTack does nothing. Only two quick presses put what you copied in a space.

What happens after 7 days?

A space clears itself 7 days after your last edit, and each edit starts the 7 days over. A day before, it shows a reminder with a Pin button. Pinned spaces never expire. Expired spaces go to Recently Deleted, so you can still bring them back.

I use DeepL. Will they clash?

DeepL also responds to ⌘C pressed twice, so both may open. KnackTack lets you know if DeepL is installed. If you'd like to keep them apart, switch KnackTack to a keyboard shortcut in Settings.

More answers on the support page.

Copy twice. Compare.
Move on.