Dainvo

Dainvo is a desktop planner app for planning your calendar, schedule, tasks, and
meetings in one place. 2 way sync allows you to create and update events, tasks, and meetings without switiching apps. Created so you can all of yoour scheduling and planning information is viewable in one place and nothing important gets missed.

Obsidian daily notes integration allows you to create, edit, update your daily notes right from your calendar. You can also view all your obsidian tasks easily in one place and schedule it on your calendar.

Connect Obsidian, Google Calendar, Microsoft 365, Apple Calendar, CalDAV, Todoist,
TickTick, Zoom, Webex, and Google Meet. Dainvo keeps working data on your
device and uses account sign-in for license activation and provider
connections.