FullScreen Reminder

The macOS app that makes sure you never miss a calendar event by flashing a full-screen overlay right before it starts.

Download on the Mac App Store

What Is FullScreen Reminder?

FullScreen Reminder connects to your macOS Calendar and presents a full-screen reminder on every connected display a few minutes before an event begins (default: 1 minute).

Getting Started

  1. Install

    Download and install from the Mac App Store.

  2. Grant Permissions

    On first launch, grant Calendar and Notification permissions when prompted.

  3. Keep Working

    Use your Mac as usual. When an event is 1 minute away, the full-screen overlay appears.

  4. Dismiss

    Click the Close button in the upper-right corner to dismiss the overlay.

Plans & Features

Feature Free Premium
Full-screen event alerts
Multiple-display support
Events displayed per day 2 Unlimited
Upgrade inside the app: Menu Bar ▸ Subscription

FAQ

The overlay didn't appear — what should I check?

  • Calendar access might be disabled. Enable in System Settings › Privacy & Security › Calendars.
  • Focus mode can silence notifications. Add the app to Focus › Allowed Apps.
  • Confirm the event starts within the reminder window (default: 1 minute).

Can I change the reminder time or colours?

No. FullScreen Reminder is intentionally simple and has no customisation options.

Does it affect battery life?

The app stays idle until an event is close. CPU usage is negligible.

How many events can I see on the Free plan?

Two full-screen alerts per calendar day. Upgrade to Premium for unlimited events.

Troubleshooting

Privacy & Security

We never collect or store your calendar data. All processing happens locally on your Mac.

Read our full Privacy Policy →

Release Notes

v1.1
February 2026
  • Version update and settings view improvements.
v1.0.0
19 April 2025
  • Initial release featuring full-screen alerts, multiple-display support, and 1-minute default reminder window.
  • Free plan limited to 2 events per day; Premium removes the limit.