Minimal Month is a clean Notion month calendar with today circled.
Start the week on Sunday or Monday, show week numbers if you want them, and add an optional caption.
It reads the date from your device’s clock, so there is nothing to enter and nothing to sync between devices.
It works in the Notion app on phones too; give the block enough height. New to embeds? Add a widget to Notion. Blank or clipped? Try these fixes.