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Snow that piles up on your Mac.

Zaspa is a little menu bar app. Snow drifts across your screen, builds up on top of your windows and your Dock, and slides off when you drag a window around. Every now and then Santa flies past.

Download for Mac Free

Version 0.1.0 · 686 KB · macOS 14 Sonoma or newer, Apple silicon or Intel

Try it on another winter

Free to download in 4K (3840 × 2160). The next version of the app will have them built in.

Go on, mess with the weather.

These are the real settings from Zaspa's menu. Change them here and the snow on this page follows along.

Snowfall

Left alone, Zaspa changes the weather by itself: flurries, calm spells, heavy snow. Pick a level if you'd rather decide.

Wind

Drag it either way. In the app a strong wind also blows the powder off the drifts.

Lights

In the app they hang under the menu bar, along the Dock or around the window you're using. The string at the top of this page listens to these buttons too.

Santa

In the app he comes every 8 to 15 minutes, rides along your Dock and drops a present. Click the present. There's always a toy inside.

found in the presents so far:

A few more things it does

  • Drifts that ride along

    Drag a window slowly and its snow comes with it. Yank it and the whole drift falls off.

  • Snowballs

    Rub the cursor along a drift until a ball forms. Let go and it drops and rolls across the windows underneath.

  • Snow on the Dock

    Sweep it off with the cursor. Leave three snowballs side by side on the Dock and they turn into a snowman.

  • A reindeer behind the notch

    On MacBooks with a notch he peeks out every few minutes. Keep an eye on the Mac at the top of this page.

  • Widgets, Spaces, a second screen

    Snow settles on desktop widgets, follows you between Spaces and falls on every display you've got.

  • Out of your way

    Clicks go straight through the snow and full-screen apps stay clear. On battery Zaspa slows down to save power.

About your data

There isn't any. Zaspa never connects to the internet. No account, no tracking, no checking for updates.

It only looks at where your windows are, so it knows where to put the snow, and that never leaves your Mac.

Zaspa

Getting it running

  1. Download

    Zaspa.dmg lands in your Downloads folder.

  2. Drag it to Applications

    Open Zaspa.dmg and drag Zaspa onto the Applications folder next to it.

  3. Open it

    A snowflake shows up in your menu bar and it starts snowing. The settings live behind that snowflake.

Early test build

This version isn't notarized by Apple yet, so the first time you open it macOS says it can't check Zaspa. To open it anyway:

  1. Click Done (or OK) in that message.
  2. Open System Settings → Privacy & Security and scroll down to Security.
  3. Next to the line about Zaspa, click Open Anyway and confirm with your password or Touch ID.

You only have to do this once.

Snow on the Dock is off until you switch it on in Zaspa's settings. macOS then asks you to give Zaspa Accessibility access, which it uses only to find where your Dock is and how big it is. You can take that back any time in System Settings → Privacy & Security → Accessibility.

Questions people ask

Is it really free?

Yes.

Which Macs does it run on?

Any Mac on macOS 14 Sonoma or newer, with Apple silicon or an Intel processor.

Will it slow my Mac down?

It draws on the graphics chip and drops its frame rate on battery and when nothing is moving. If you want it lighter still, choose Light snowfall.

Can it start when my Mac starts?

Yes. Turn on Launch at login in Zaspa's settings.

How do I get rid of it?

Click the snowflake in the menu bar and choose Quit. To uninstall, drag Zaspa from Applications to the Trash.