Month Navigator, from AptoTools.

For macOS 14 or later

Check next month without opening Calendar.

Month Navigator adds a back and a forward arrow to the calendar widget in your Notification Center. Tap them to move through months. That is the whole app.

Download Month Navigator

Version 1 is free. No account, no sign-up, no trial to run out.

Requires macOS 14 or later.

The arrows move the month. Nothing else changes, and Calendar never opens.

Both widget sizes

Both sizes carry the same two arrows, beside the month.

Month Navigator showing August in the small widget size.
Small widget size
Month Navigator showing August in the medium widget size.
Medium widget size

What it asks from your Mac

No calendar access

It never asks to read your calendar, so there is no permission prompt to approve.

Nothing leaves your Mac

It makes no network calls. There is nothing to send, and nowhere to send it.

macOS 14 or later

It needs macOS 14 or later. On an older Mac it will not run, and we would rather say so before you download it.

Move through months from Notification Center

It shows dates, and nothing else. One widget, two arrows, no settings to learn.

Download Month Navigator

Checking the download yourself: the SHA-256 of MonthNavigator.dmg is 03c8a02d3a9a932aba88a8ba302c9b7a0ddf9946bec70d65b9e3b58c74479ebe.