A Google Calendar app for Mac, with your tasks on the same day

Google does not make one: on a Mac, Google Calendar runs in the browser. You can add your Google account to Apple Calendar, or use a desktop app such as Musli, which syncs both ways with Google Calendar and adds your tasks to the same day.

Yes: add your Google account in System Settings → Internet Accounts and Apple Calendar shows it. That gives you a calendar; Musli adds tasks as time blocks, your next meeting with a Join button in the menu bar, and Plan my day.

It depends on where your calendars live. Apple Calendar is free and built in. Fantastical connects many calendar services on a subscription. If you live in Google Calendar and want to plan your tasks into the same day, and to pay once, Musli is built for that.

Yes. The Mac app is a universal build that runs natively on both.

No. Musli works with Google Calendar. If your calendar is in iCloud, Musli is not the right fit yet.

Yes. Musli is out for macOS, Windows and Linux. You buy it once for $49 and download it right after paying; updates arrive inside the app.

No. Musli is a one-time purchase of $49: you pay once and the app is yours. There is no monthly or yearly plan.