NimbleCal is built to be great at core calendar work (events, recurrence, reminders, privacy). Here are a few things it does not support right now.

Collaboration and sharing

• Sharing entire calendars (live collaboration) is not available.
• External calendar subscriptions (like CalDAV or webcal:// subscribe links) are not available.

Tasks and notes

• NimbleCal focuses on calendar events (VEVENT). It does not support tasks/todos (VTODO) today.

Invites (email delivery)

• If you import an .ics invite file, NimbleCal can help you accept/decline locally, but it does not send email replies (iTIP) in this version.

See: Troubleshooting imports

Native apps

• There are no native iOS/Android apps today. NimbleCal is a web app.

Tip: You can still install it like an app on most devices.

See: Install NimbleCal (app)