Full-screen meeting reminder for Mac

Meetings you
can't miss.

A quiet banner in the corner never stood a chance against deep focus. Slapss sits in your menu bar, watches your calendar, and takes over your whole screen the second a meeting starts. You will not miss it.

Download on the App Store Free forever. No tracking. Open source.
01 / The problem

Notifications are built to be ignored. A small banner, a soft chime, gone in three seconds. By the time you look up, you are already late.

Slapss does the opposite. When it is time, it covers every display you have, with the one thing you need to see and a single tap to join.

02 / What it does

Everything you need.
Nothing you don't.

01

Full-screen takeover

The alert lands on every display at meeting time. Impossible to scroll past, impossible to miss. Press Escape and you are back to work.

02

One tap to join

Slapss reads the link from the event, so Zoom, Teams, Meet, and Webex are one click away the moment the alert appears.

03

Reminders too

Full-screen overlays for macOS Reminders, with one-tap completion right from the alert.

04

On your schedule

Set your own lead time so the alert fires exactly when you want, whether that is at the start or a few minutes before.

05

Eight languages

Switch language on the fly, no restart required.

Slapss menu bar popover showing the day's meetings
Slapss setup: language, theme and calendar access
03 / Works with your calendar

Outlook, Google, iCloud.
All at once.

01

Outlook and Microsoft 365

Sign in to Microsoft 365 inside Slapss, or use the Exchange account in macOS Calendar. Teams links join in one click, even behind Safe Links.

02

Google Calendar

No browser tab to keep open. Add your Google account to macOS once and every event gets a full-screen alert, with Meet opening in the right account.

03

For hyperfocus

If banners never reach you when you are deep in work, a full-screen alert with a buffer before the start does.

04

Compare the options

How Slapss stacks up against MeetingBar, Meetly, BigReminder and other meeting reminder apps for Mac.

Free forever.
No tracking, ever.

No subscription, no paywall, no analytics, no account. Slapss reads your calendar locally and sends it nowhere. There is nothing about you to collect, and that is the whole point.

And you don't have to take our word for it. Slapss is open source, so you can read the code and check.

04 / Questions
Is it really free?

Yes. No subscription, no in-app purchase, no trial that runs out. Free, for good.

Do you collect my data?

No. There is no tracking or analytics of any kind. Your calendar is read on-device and never leaves your Mac. Slapss is open source, so this is something you can verify rather than something you have to trust.

Is Slapss open source?

Yes, since version 2.0. The complete source code is on GitHub under the Apache 2.0 licence. The Mac App Store version remains the only official build — that is the one you should install.

Which calendars work?

Any calendar in the macOS Calendar app, including iCloud, Google, and Outlook, plus Microsoft 365 and Exchange Online. You choose which ones can trigger an alert.

How is Slapss different from MeetingBar?

Both are free and open source. MeetingBar is a menu bar calendar with full-screen alerts as an option. Slapss is built around the full-screen alert: every meeting, every display, with Microsoft 365 sign-in and Presenting Now. See the full comparison.

Is there a Windows or iPhone version?

No. Slapss is built for macOS only, focused on doing that one thing well.

Stop missing meetings.

Download on the App Store

I built Slapss to fix a problem I kept running into myself, and shared it so it can help others too. If it saved you a meeting or two and you'd like to say thanks, buy me a coffee. Thank you!