Slapss is a macOS app that takes over your screen with a full-screen alert the moment a meeting starts, so you can't miss it. It offers one-tap joining for Zoom, Teams, Meet, and Webex by reading the meeting link from the calendar event, plus full-screen overlays for macOS Reminders. It reads calendars locally (iCloud, Google, Outlook, Microsoft 365, Exchange Online) and sends no data anywhere, with no tracking or account required.
What it's for
Getting a full-screen alert when a meeting startsJoining video calls with one tap from the alertGetting reminded about macOS Reminders tasks with one-tap completionSetting a custom lead time before meetingsAvoiding missed meetings during deep focus workPausing alerts while presenting or screen sharing
Features 19
- "Open in Calendar" button on agenda rows
- "Presenting Now" toggle to pause alerts while screen sharing
- Automatically reads meeting join link from calendar event
- Choice of which calendars trigger alerts
- Customizable lead time for when the alert fires
- Filter to show alerts only for accepted meetings
- Full-screen meeting alert takeover on every display
- Full-screen overlays for macOS Reminders
- Join button directly in the notification banner
- Keyboard shortcuts (Return to join, Esc to dismiss)
- Local, on-device calendar reading with no data collection
- Menu bar countdown to next meeting
- One-tap completion of reminders from the alert
- One-tap join for Zoom, Teams, Meet, and Webex
- Scrolling agenda view for busy days
- Selectable themes (Sunset, Ocean, Forest)
- Snooze options within the full-screen alert
- Support for six languages with instant switching
- Works with any calendar in the macOS Calendar app (iCloud, Google, Outlook, Microsoft 365, Exchange Online)
At a glance
free tier
TypeDesktop app
DeploymentInstalled (local)
PlatformsmacOS
Integrations
GooglemacOS CalendarmacOS RemindersGoogle MeetZoomiCloudExchange OnlineMicrosoft TeamsMicrosoft 365WebexOutlook
Resources
Pricing
Slapss is stated to be free forever with no subscription, no in-app purchase, and no trial.
FreeFree
Free forever, no subscription, no in-app purchase, no trial, no analytics, no account.
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