Apps like Tuta: Secure Private Calendar

Here are some great alternatives to Tuta: Secure Private Calendar by Tutao GmbH :
Proton Calendar: Secure Events
Proton Calendar: Secure Events
★4.5
The Family Core
The Family Core
★4.6
OurCal: Shared Calendar
OurCal: Shared Calendar
★4.3
Seecrypt Enterprise
Seecrypt Enterprise
★3.7
BotherMe&U Reminder Messenger
BotherMe&U Reminder Messenger
★4.0
EteSync - Secure Data Sync
EteSync - Secure Data Sync
★4.3
Calendar
Calendar
★4.3
Business Calendar 2 Planner
Business Calendar 2 Planner
★4.6
White Calendar
White Calendar
★4.4
Calendar 2025
Calendar 2025
★4.2
Fossify Calendar
Fossify Calendar
★4.4
xx messenger
xx messenger
★3.3
2025 Calendar Business Planner
2025 Calendar Business Planner
★4.8
Looping - Family calendar
Looping - Family calendar
★3.8
Calendar+ Schedule Planner
Calendar+ Schedule Planner
★3.9
Calendar 2025
Calendar 2025
★4.1