Tilly vs Tuta Calendar

Tilly combines calendars and tasks in a daily plan, with a brief that highlights what is coming up, conflicts, and open time. It connects Google Calendar, Outlook and Microsoft 365, iCloud, CalDAV servers, and subscribed ICS feeds. Tasks appear alongside calendar events so users can judge them against available time. Booking links use availability across connected calendars while showing guests open times, not the events behind them. Tilly checks for overlaps across visible calendars; Pro can recommend which meeting to move and which to keep. It reads calendars into one view without copying events or busy blocks between accounts. Assistant-prepared calendar or task changes wait for explicit approval. Tilly is available on iOS, macOS, and the web. The Free plan supports two calendar accounts and costs nothing. Tilly Pro costs $7.99 a month, and Tilly Pro Annual costs $59.99 a year; eligible new subscribers can get a 14-day trial. Tilly says calendar data is encrypted in transit and at rest and is not sold to third parties.

Tuta Calendar organizes appointments, business meetings, and repeating tasks across Android, iOS, Linux, macOS, web, and Windows. It supports shared calendars with read-only, read-and-write, or write-and-manage-sharing access. Calendar events, invitations, sharing, and push reminders are described as end-to-end encrypted. Users can send and receive invitations, including password-protected encrypted invitations to external users. Imported calendars sync automatically across devices, while the listed calendar sync type is one-way. Tuta says reminders are hidden from the phone operating system and can arrive offline. The calendar is integrated with Tuta email and contacts. Security features include two-factor authentication; Tuta also describes its clients as open source and its calendar as using zero-knowledge architecture. The Free plan includes one calendar. Revolutionary costs €3 a month, billed monthly, and Legend costs €8 a month, billed monthly; both include unlimited calendars. Tuta is made by Tutao GmbH, based in Hannover, Germany, and founded in 2011.