# Tuta Calendar:  Secure Planner — Encrypted Events & Reminders

> Secure, encrypted calendar for private event planning and reminders. (iPhone/iPad app by Tutao GmbH.)

- Source: https://appshunter.io/ios/app/tuta-calendar-secure-planner/id6657977811 (this page in markdown: same URL + `.md`)
- Developer: [Tutao GmbH](https://appshunter.io/developer/922429608)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Rating: 4.60/5 from 158 App Store ratings · 66 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 44 MB
- Languages: Russian, Afrikaans, Albanian, Armenian, Belarusian, Bangla, Bosnian, Breton, Bulgarian, Esperanto and 51 more
- Released: 2024-10-02
- Data updated: 2026-08-30
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/tuta-calendar-secure-planner/id6657977811/reviews.md

## What is Tuta Calendar?

PROTECT YOUR PRIVACY WITH TUTA CALENDAR – FREE, SECURE & ENCRYPTED PLANNER

Take control of your schedule with Tuta Calendar, the world’s most secure calendar app, trusted by privacy-conscious users worldwide. With quantum-safe encryption, your events, reminders, and schedules stay private. Fast, open source, and free: Tuta Calendar is built with the highest security standards. Plus, it’s perfectly integrated with the Tuta Mail app.

WHY CHOOSE TUTA CALENDAR?

Stay Secure

• Quantum-Safe Encryption: Your entire schedule, including event details and reminders, is fully end-to-end encrypted – only you can access it.
• Zero Tracking: No ads, no profiling, no data sharing. Your calendars are yours.
• Zero-Knowledge Architecture: We can’t see your events, meeting times, or attendees. Your schedule is invisible to us.
• Secure Event Sharing: Share events securely with Tuta users or external calendars via password-protected invites.
• GDPR-Compliant & Hosted in Germany: Protected by strict European privacy laws.

Boost Your Productivity

• Sync Across Devices: Your events instantly update on mobile, web, and desktop.
• Recurring Events: Schedule daily, weekly, monthly, yearly, or custom repeating events.
• Multiple Calendar Views: Easily switch between agenda, daily, 3-day, weekly, or monthly views.
• External Calendar Sync: Subscribe to external calendars – updates happen automatically.
• Unlimited Calendar Management (paid feature): Manage multiple calendars and toggle visibility effortlessly.
• Offline Access: View and manage your schedule even without an internet connection.

Simple & Intuitive

• User-Friendly Interface: Modern, clean design with light and dark modes.
• Quick Navigation: Create, edit, or delete events in just a few taps.
• Smart Event Reminders: Get encrypted notifications to ensure you never miss an appointment.
• Email Integration: Link calendar events directly to your Tuta Mail account for seamless scheduling.

PRICING

Tuta offers a free plan for everyone, plus premium plans with extra features, available monthly or yearly. Every subscription includes Tuta Mail and Tuta Calendar, seamlessly syncing across all your devices.

• Free – Secure, encrypted email and calendar at no cost.
• Revolutionary – 20 GB, unlimited calendars, calendar invites and sharing, custom domains, and more.
• Legend – 500 GB, unlimited calendars, calendar invites and sharing, 30 email addresses, and advanced features.

No matter which plan you choose, your communication remains end-to-end encrypted, private, and completely free from tracking.

BONUS: GET TUTA MAIL WITH THE SAME ACCOUNT

Your Tuta account gives you access to Tuta Mail, the encrypted email service with the same quantum-safe security as your calendar. One account, two essential privacy tools – completely free.

WHO IS BEHIND TUTA?

Freedom fighters committed to protecting freedom of speech and your right to privacy!

• Developed & Hosted in Germany: Adheres to strict GDPR data protection laws.
• Private by Design: We can’t access your data – secure password reset ensures your privacy.
• End-to-End Encrypted from the Ground Up: Every event, contact, and reminder is encrypted by default.

TRUSTED BY SECURITY EXPERTS

"Tuta provides an exceptional level of security and privacy... If security is your priority, there’s not much better than Tuta."
— TechRadar

"Since Tuta is open source and has amazing products in development, I moved my email there."
— Journalist Dan Arel

"Tuta’s email security is unmatched. Its mobile apps are fast and user-friendly, with fair pricing and a free option."
— CyberSynchs

JOIN MILLIONS WHO TRUST TUTA

Protect Your Schedule: Download Tuta Calendar today and join millions who trust us for secure, encrypted time management.

Website: https://tuta.com
Open Source Code: https://github.com/tutao/tutanota
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

## Key features

- Quantum-safe end-to-end encryption
- Zero tracking and zero-knowledge architecture
- Secure event sharing
- Cross-device syncing
- Multiple calendar views
- Smart event reminders
- Offline access

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Legend (Yearly) | $99.99 | per year |
| Revolutionary (Yearly) | $39.99 | per year |
| Legend (Monthly) | $9.99 | per month |
| Revolutionary (Monthly) | $3.99 | per month |


## What do users think of Tuta Calendar?

Overall sentiment: mixed

**Pros**

- 🔒 Privacy and security focused
- 👍 Streamlined and minimalist design
- 🔄 Calendar subscriptions work well
- ✨ Good color schemes and views
- ✅ Private alternative to big tech
- 👨‍👩‍👧‍👦 Good for family use
- 💡 Well-designed and functional
- 💯 Privacy protection is a priority
- 🚀 Fast and efficient
- 🌟 Updates improve functionality
- 🔒 Data safety is a priority
- 😊 User-friendly interface
- ✨ Visually appealing design
- 🌟 Great encrypted calendar

**Cons**

- 🐛 Frequent crashes and bugs
- ⚠️ Requires account/login
- 📅 Widget not working/limited
- ❌ No watch app support
- ⏳ Slow loading/reloading events
- 🔕 Double reminders from Tuta Mail/Calendar
- 📉 Data loss issues
- 🗓️ Missing holiday support
- 🤔 Calendar subscriptions can duplicate entries
- 🚫 Cannot delete calendars/subscriptions
- 😵 Cryptic error messages
- ♿ Poor readability for low vision
- 🖱️ UI issues with text size and color
- 📅 Default appointment length is 30 mins
- 🗓️ Week view limited to 8 hours
- 🚫 No on-device notes/non-login option
- 🤏 Cannot zoom/pinch to adjust time intervals
- 👆 Cannot move events by dragging
- ❓ Account creation issues (clock puzzle)
- 🗂️ Calendar entries not saving
- 🎨 Limited color coding for appointments
- 📅 App icon doesn't show current date
- 🔢 Day numbers not bold enough
- 📅 Month view shows only 4-5 letters of event
- 🗓️ No quick access to distant dates
- 😊 No emojis in events
- 🚫 FaceID login issues for free accounts
- ❌ Not user-friendly for planning
- 🗄️ Free tier lacks family planner
- 😫 Login issues (invalid credentials)
- ❓ Widget blank at times
- 📅 Widget only shows one day
- 🚫 No option to open locations in other map apps
- 📅 No week numbers displayed
- 🚫 No month view widget
- 📅 Limited display of event details
- 🤔 Usability issues compared to native apps

**Commonly reported bugs**

- App crashes frequently
- Widget is not working or is blank
- Calendar events not saving or changes not saving
- App logs out automatically and shows invalid credentials
- Double reminders for appointments
- Lost important information/data
- Calendar subscriptions duplicate entries
- Cannot delete calendars or calendar subscriptions
- Cryptic error messages
- App constantly crashing on opening
- Login issues
- FaceID login not working for free accounts
- Account creation issues (clock puzzle)
- Search function doesn't work on app
- Events from calendar subscriptions not syncing
- App ignores OS font size settings
- Issues with recurring events being duplicated
- Calendar entries not visible without connection
- Events reload every time the app opens

**Most requested features**

- App for the Watch
- Icon shows current date
- Ability to see holidays marked
- Import from Apple calendar
- Adjustable app opening view (e.g., month view)
- Default appointment length setting
- Color code appointments on the same calendar
- Widget that shows more than one day
- Widget that shows entire month
- Ability to see monthly and agenda view simultaneously
- Option to zoom/pinch time intervals
- Move event blocks by dragging
- Custom settings for specific days of the week
- Week numbers displayed
- Full-featured calendar
- Option to open locations in other map apps
- More customizability in UI
- Better readability for low vision users
- Adjustable text size respecting OS settings
- More compact week view
- Display more event details in month view
- Quick access to distant calendar days
- Emojis in events
- Family planner in free tier
- On-device notes/non-login option
- Support for holidays by country/region
- Dark mode option
- Advanced analytics dashboard
- Ability to expand week view to include more than 8 hours
- Sync with other calendar apps
- More robust search functionality on mobile app

## Recent user reviews (10 of 66)

All indexed reviews: https://appshunter.io/ios/app/tuta-calendar-secure-planner/id6657977811/reviews.md

### 5/5 — Quick impressions

*2026-08-14*

It’s been keeping up with regular events and vital updates, even when I don’t. It’s more efficient in use than SOME megacorp brand browsers which will remain anonymous, and the reminders can wear any alarm sound effect I want.

**Developer response:** Your positive feedback on our secure and private mail really brightened our day - thank you!

### 1/5 — Registrierung nicht möglich

*2026-07-30*

Ich kann mich leider nicht registrieren mit dem iPhone. "Ein Fehler ist aufgetreten."Bitte versuchen Sie es später erneut " Und"Type Unknown Error" werden mir angezeigt.
Was kann ich tun?

**Developer response:** Hallo, das ist seltsam und sollte natürlich nicht so sein. Könnten Sie sich bitte über die Support-Funktion in der App oder direkt unter hello@tutao.de an uns wenden, damit wir Ihren Fall genauer untersuchen und Ihnen so schnell wie möglich helfen können?

### 4/5 — Event integration and repetition bugs

*2026-07-23*

Event integration from other websites could be easier (for now, as Tutacalendar cannot process iCal files, I first have to add events to my apple calendar and then import the calendar file into Tutacalendar on desktop as importing files is not possible on the mobile app…). Also, there are some bugs such as when adding a repetitive event (i.e. weekly), if it is later erased the app keeps sending reminder for inexistent events.

**Developer response:** Thanks for your detailed feedback! Just to clarify, Tuta Calendar now supports importing .ics files directly on mobile, so you no longer need to go through Apple Calendar first. You can also subscribe to public calendars via an ICS URL. We’re sorry about the recurring-event reminder issue and appreciate you reporting it. We’re continuously working to improve Calendar.

### 3/5 — Buggy, but works

*2026-07-23*

I keep having to reset the app everytime I want to add a calendar to this, bit annoying

**Developer response:** Hi, that is odd and of course should not be that way. Could you please contact us via the support function in app or directly at hello@tutao.de, so we can have a closer look at your case and help you asap.

### 1/5 — not working-not a review

*2026-07-17*

Hey there, I’m not able to log into account just after creating it. Even though password saved. Not sure what to do, can’t even delete the address just created. I really just like support, but don’t know how to get it.

**Developer response:** Hi, that is odd and of course should not be that way. Could you please contact us via the support function in app or directly at hello@tutao.de, so we can have a closer look at your case and help you asap.

### 4/5 — Watch Support

*2026-06-29*

I would love to see an App for the Watch.

**Developer response:** Thanks for your feedback and support of Tuta! We deeply respect your input, and we will try to combine your feedback with our roadmap, in order to provide a better experience!

### 1/5 — Still crashes and account

*2026-06-11*

The fact that it still crashes and when managing to launch, requires an account is an absolute no go

**Developer response:** Hi, that is odd and of course should not be that way. Could you please contact us via the support function in app or directly at hello@tutao.de, so we can have a closer look at your case and help you asap.

### 1/5 — How is it ‘private’ and ‘secure’ when you ask for email?

*2026-06-08*

Makes no sense

Edit: thanks for the reply. To clarify, I can’t use the calendar without logging in. I don’t think an account is needed to put in my plans on a calendar

**Developer response:** Hi, we never ask for email, phone number or any other personal info. Could you please elaborate and report abuse via the app or at abuse@tutao.de.

### 1/5 — Keine Termine und leicht einen sitzen

*2026-04-25*

Tuta Kalender muss ein großer Fan oder Verehrer von Karl Lagerfeld sein. Anders kann ich mir nicht erklären, dass ich jeden einzelnen Tag als Ansicht in meinem großen Widget auf dem Startbildschirm erhielt: heute keine Termine mit einer kleinen Zeichnung von einem Mann, der zurückgelehnt in einem Sessel saß und sich anscheinend ein Gläschen genehmigte. Dass ich aber tatsächlich teilweise 3, 4 oder auch 6 Termine im Kalender drin stehen hatte? Das wollte mir weder das Widget noch die App so recht verraten, denn auch Benachrichtigungen oder Erinnerungen erhielt ich keine. 
Dasselbe übrigens auf meinem Android Smartphone und Android Tablet. 
Kurzum: Jetzt habe ich wirklich keine Termine mehr und Dank meiner neu gewonnenen Freizeit am Tage nun öfter mal leicht einen sitzen.

**Developer response:** Hallo, das ist seltsam und sollte natürlich nicht so sein. Könnten Sie sich bitte über die Support-Funktion in der App oder direkt unter hello@tutao.de an uns wenden, damit wir uns Ihren Fall genauer ansehen und Ihnen so schnell wie möglich helfen können?

### 5/5 — Einfach aber genial

*2026-04-19*

Weiter so genau das was man benötigt. Cool wäre noch, wenn das icon auf dem iPhone das aktuelle Datum angezeigt.

**Developer response:** Vielen Dank für Ihren wertvollen Vorschlag! Wir werden ihn an unser Team weiterleiten. Wenn Sie weitere Ideen haben, schreiben Sie uns gerne an hello@tutao.de – wir freuen uns darauf, von Ihnen zu hören!

## Frequently asked questions about Tuta Calendar

### What does Tuta Calendar do?

Tuta Calendar is a secure and encrypted planner app that helps you manage your schedule, events, and reminders. It uses quantum-safe end-to-end encryption to ensure that only you can access your calendar data, offering a high level of privacy and security.

### What are the key features of Tuta Calendar?

Key features include quantum-safe end-to-end encryption for all your data, zero tracking and zero-knowledge architecture, secure event sharing, cross-device syncing, multiple calendar views, smart event reminders, and offline access. It also integrates seamlessly with Tuta Mail.

### How much does Tuta Calendar cost?

Tuta Calendar offers a free plan that provides secure, encrypted email and calendar services at no cost. For users needing additional features like unlimited calendars and more storage, premium plans are available on a monthly or yearly subscription basis.

### What devices is Tuta Calendar compatible with?

Tuta Calendar syncs seamlessly across mobile, web, and desktop devices. This ensures that your events and schedule are always up-to-date no matter which device you are using.

### What are common use cases for Tuta Calendar?

Common use cases include securely planning personal appointments, managing work schedules, coordinating events with others through secure sharing, and setting up recurring reminders for daily, weekly, or monthly tasks, all while maintaining a high level of privacy.

## Version history (last 5 releases)

### 357.260824.1 — 2026-08-26

Minor bug fixes

### 357.260818.1 — 2026-08-20

General improvements and bug fixes

### 356.260806.1 — 2026-08-07

New improvements in Tuta Calendar:

- Timezone support for events
- Displaying reminders in the event preview
- Calendar alarms now respect 12/24 hour format
- Improved sync performance
- General performance improvements

A detailed list of the technical changes can be found on our client GitHub repository: https://github.com/tutao/tutanota/releases

### 356.260805.0 — 2026-08-06

New improvements in Tuta Calendar:

- Timezone support for events
- Displaying reminders in the event preview
- Calendar alarms now respect 12/24 hour format
- Improved sync performance
- General performance improvements

A detailed list of the technical changes can be found on our client GitHub repository: https://github.com/tutao/tutanota/releases

### 355.260720.0 — 2026-07-21

Calendar improvements:

- Timezone support for events
- Displaying reminders in the event preview
- Calendar alarms now respect 12/24 hour format
- Small bugfixes

A detailed list of the technical changes can be found on our client GitHub repository: https://github.com/tutao/tutanota/releases

## Apps similar to Tuta Calendar

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Calendars: Schedule Planner](https://appshunter.io/ios/app/calendars-schedule-planner/id608834326) | 4.7 (121,097) | Free | Productivity |
| [Pencil Planner & Calendar Pro](https://appshunter.io/ios/app/pencil-planner-and-calendar-pro/id1505638148) | 4.6 (12,459) | Free | Productivity |
| [Simple Calendar: ToDo Planner](https://appshunter.io/ios/app/simple-calendar-todo-planner/id1422994973) | 4.6 (6,358) | Free | Productivity |
| [Google Calendar: Get Organized](https://appshunter.io/ios/app/google-calendar-get-organized/id909319292) | 4.5 (131,463) | Free | Productivity |
| [Planner Pro - Daily Planner](https://appshunter.io/ios/app/planner-pro-daily-planner/id571588936) | 4.5 (13,215) | Free | Productivity |
| [Daily Schedule Planner - MyDay](https://appshunter.io/ios/app/daily-schedule-planner-myday/id1631348027) | 4.6 (762) | Free | Productivity |

## More apps by Tutao GmbH

- [Tuta Mail: Secure Email](https://appshunter.io/ios/app/tuta-mail-secure-email/id922429609)

All apps by Tutao GmbH: https://appshunter.io/developer/922429608

## Related topics

[tuta calendar](https://appshunter.io/ios/topics/tuta-calendar) · [tuta](https://appshunter.io/ios/topics/tuta) · [tutanota](https://appshunter.io/ios/topics/tutanota) · [tuta mail](https://appshunter.io/ios/topics/tuta-mail) · [calander planner events](https://appshunter.io/ios/topics/calander-planner-events)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*