Notion Calendar (formerly Cron) is a premium calendar app that doubles as a task scheduling layer — pulling Notion database items directly onto a calendar and allowing users to time-block tasks with precision. Acquired by Notion in 2023, it was rebuilt to connect the workspace and the calendar into a unified view of work and time. Its multi-calendar display, availability sharing, and keyboard-first design make it one of the most thoughtfully engineered scheduling tools for knowledge workers who plan their tasks by time-blocking.

Reference:

Cron Calendar on Wikipedia

https://calendar.notion.so