Which calendars does Calerto support?

It syncs with Apple Calendar and Google Calendar.

Does Calerto send my calendar data to a server?

No, the product states that your calendar data never leaves your device.

Is there a paid tier?

Yes, a Pro version can automatically set alarms for your entire week. Pricing details are not listed here.

Calerto for Mac

Full-screen meeting alerts for your Mac

Productivity

Collaboration and Communication

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Listing details

HiCyou directory record

Listed

Listed website: apps.apple.com
Directory record created: Sep 13, 2026
Last record update: Sep 13, 2026

Listing information

Overview
7 key features
3 use cases

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What is Calerto for Mac

Calerto for Mac is a meeting alarm app that turns your calendar events into full-screen alerts you won't miss. It syncs with Apple and Google Calendar, lets you set custom prep time per meeting, shows a menu bar countdown to your next meeting, and can auto-alarm your whole week with Pro. Calendar data stays on your device.

Key Features

Full-screen meeting alerts instead of dismissible notifications

Custom prep time per meeting

Apple Calendar and Google Calendar sync

Menu bar countdown to the next meeting

Pause alarms without losing them

Pro auto-alarms for the whole week

Automatic launch at login (toggleable)

Use Cases

Avoid missing back-to-back meetings while working in other apps
Get on-time reminders with prep lead time before calls
Track upcoming meetings at a glance from the menu bar

Why do startups need this tool?

For busy founders and remote teams, missed meetings cost momentum. Calerto's unmissable full-screen alarms and menu bar countdown help you stay on schedule without checking your calendar constantly, and local-only data handling keeps scheduling private.