Tuta Calendar
Beginner RecommendedTuta Calendar is one of the best Google Calendar alternatives. End-to-end encrypted calendar, integrated with Tuta email.
Information verified on July 22, 2026
Description
Tuta Calendar is a fully end-to-end encrypted calendar included with every Tuta account. Events, descriptions and participants are encrypted. Even Tuta can't read them. Available on iOS, Android, Windows, macOS, Linux and web. Extended sharing and multiple calendars require a paid subscription.
Key features
- Full E2E encryption
- Encrypted notifications
- Encrypted invitations
- Multi-platform
- Open source
Strengths
- + Full E2E encryption (events, descriptions, participants)
- + Included with free Tuta account
- + Multi-platform (iOS, Android, desktop, web)
- + Open source
Weaknesses
- − No CalDAV protocol (no interoperability)
- − Multiple calendars reserved for paid subscribers
- − Tied to Tuta services
Recommended for
- Tuta users wanting an integrated encrypted calendar
- Google Calendar replacement with encryption
Tuta Calendar vs Google Calendar: the comparison
| Criterion | Tuta Calendar | Google Calendar |
|---|---|---|
| Price | Free (1 calendar), paid for extended features | Free |
| Targeted ads on your data | No | Yes (Google ad profile) |
| Source code | Open (auditable) | Proprietary |
| Migration difficulty | Easy (2/5) | — |
Comparison
Tuta Calendar encrypts more than Proton Calendar (participants and descriptions included). EteSync offers CalDAV but requires more setup. Nextcloud Calendar is self-hostable but without native E2E encryption.
This topic is chapter 5 of my book
It answers these questions, among others:
- how do you move your calendars without losing shares and invitations?
- maximum encryption or the freedom to choose your app: how do you decide?
- and what hides in twenty years of accumulated calendar entries?
Forthcoming 22/10/2026 from Éditions Eyrolles
Frequently asked questions
How much does Tuta Calendar cost?
Free (1 calendar), paid for extended features
How do you switch from Google Calendar to Tuta Calendar?
Estimated difficulty: Easy (2/5). Event import possible. No CalDAV: migration from Google Calendar via ICS file.
Who is Tuta Calendar for?
Tuta users or those seeking a simple end-to-end encrypted calendar.
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