Never miss a meeting again. Slapss watches your calendar and takes over your screen the moment your next meeting starts: a full-screen alert that's impossible to bury, ignore, or forget.
WHY PEOPLE USE SLAPSS
Full-screen takeover alert you can't miss
Optional alerts on every connected display for multi-monitor setups
Configurable heads-up before each meeting, from 1 to 30 minutes
One-tap Join for Zoom, Teams, Google Meet, and Webex links, right in the alert or the notification banner
Snooze for 1 minute, 5 minutes, or until the event ends
Press Escape or Return to dismiss instantly
Optional: only alert for meetings you've actually accepted, tentative and declined stay quiet
"Presenting Now" toggle pauses the alert while you're screen sharing, so meetings never crash your demo
MAKE IT YOURS
Three themes: Sunset, Ocean, and Forest
Available in English, Turkish, Spanish, German, Italian, and French, auto-detected on first launch
Full VoiceOver and keyboard support, with Reduce Motion and Reduce Transparency built in
WORKS WITH YOUR CALENDARS
macOS Calendar, including iCloud, Google, and Exchange accounts synced through Calendar.app
Native Microsoft 365 and Exchange Online sign-in, no setup required
Jump to any meeting in Calendar.app with one tap
REMINDERS TOO
Reminders from Reminders.app appear in your agenda and get their own full-screen alert at due time. Mark them done without leaving your current app.
BUILT FOR MULTIPLE GOOGLE ACCOUNTS
Set a Google account per calendar so Meet links always open with the correct profile.
LIVES WHERE YOU WANT IT
Sits quietly in your menu bar, no Dock clutter
Show your next meeting in the menu bar, or just the icon
Launch at login, so you're covered from the moment you sit down
Slapss is free and unlimited. No accounts, no feature gating. Your calendar data never leaves your Mac.
This app hasn’t received enough ratings or reviews to display an overview.
Now its perfect for me
TalkingFlyingBananna
With the addition of setting full screen alerts to appear before the event, I will now arrive early to online meetings. The range only allows up to 60 seconds early, which may not work for those who are not remote like me and may need a few minutes to walk to a meeting. While I don’t need it, I can see value in having the “show alert” option with more options to snap people out of their flow to make it across a building/campus on time.
Developer Response
Thanks for the feedback! There's actually a setting for this already in Settings (gear icon, bottom of the popover), under Alerts, you'll find "Show alert early" with options for 15, 30 and 60 seconds before the meeting starts.
Almost Perfect!
Jayden J Wilhelm
Love the vibe and UI. Would be perfect if it had 3, 5, and 10 minutes prior full screen alert options. Following!
Fixed: Snooze could appear to do nothing on the full-screen alert in macOS 27 beta. The snooze choices now open reliably inside the alert.
Fixed: Calendars now reappear in Settings without restarting Slapss after you remove and re-add a macOS Calendar account.
Version 1.8.2
The developer, Can Cetin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More