No advertising
Neither in the web app nor in the apps for Android and iPhone. There are no advertising networks and no advertising IDs.
Private Calendar
No ads · No trackers
Private online calendar. Without tracking.
No advertising, no analysis tools, no advertising cookies. Your appointments are end-to-end encrypted and stored on servers in Germany.
Week view · Tap the phone
Calendar content end-to-end encrypted
Hosted in Germany
Documented cryptography
Weekly view
Without tracking
What we don't do with your data.
Private Calendar is financed through Premium subscriptions, so there is nothing we need to analyse about you.
No analytics tools
No audience measurement, no analytics or advertising trackers. The apps also do not contain third-party crash reporting libraries.
No external integrations
Fonts and images come from our own server. When you open the page, no requests are sent to third parties.
No cookie banner
Only what is technically needed for sign-in and calendar is saved. No consent is required for this.
Logs gone after 7 days
A technical access log is for security purposes only and is deleted after seven days.
Appointments always encrypted
Even we can't read your appointments. They are encrypted on your device before they are uploaded.
The only third-party integration: Cloudflare Turnstile protects the contact form and the forms requiring no sign-in for account deletion, cancellation and withdrawal against bots. Details are in the Privacy Policy.
Features
Everything a calendar needs – without spying on you.
Appointments, tasks and reminders, neatly organized. And underneath, an architecture that treats your privacy not as an option, but as its foundation.
Store and sync end-to-end encrypted
For storage and synchronization, your events are encrypted on your device before being sent to the server. Calendar and master keys reach the server only in encrypted form, never in plain text.
Hosted in Germany
Your data remains under European data protection, on servers in Germany.
Offsite backup in Switzerland
The database backups are encrypted and geographically separated. You can also create your own exports.
Documented cryptography
AES-256-GCM, PBKDF2/HKDF, local keys and optional two-factor authentication; specification and relevant source code can be viewed.
Appointments, tasks & reminders
Plan appointments and tasks in a calendar and receive timely reminders. Browser, Android, iPhone or power saving rules can delay or suppress notifications. Premium adds several reminders per appointment, task deadlines and a working time counter with statutory breaks and weekly balance (desktop browser, Android and iPhone app).
Share & external iCal subscriptions
Share your own calendars with encryption and add external iCal subscriptions. The Android and iPhone apps retrieve these subscriptions directly and synchronize them with end-to-end encryption.
This is how Private Calendar protects your appointments
Encrypted before it leaves your device.
Calendar content is stored as encrypted blocks. With external iCal link subscriptions, the server receives neither the private link nor the source content in plain text.
Encrypted on your device
Every appointment is encrypted locally with AES-256-GCM before it is synchronized.
Sync encrypted
The server only stores calendar content as encrypted blocks. Link subscriptions are loaded directly from a signed-in Android device or iPhone.
Only you have the key
The key stays with you. Without it, the data remains permanently unreadable – for everyone.
Check open source cryptography yourself
The published security modules are open source under Apache 2.0. Source code, specifications and verification steps are available.
Pricing
Start for free. More if needed.
Both plans use the same end-to-end encryption. Premium increases limits and adds iCal subscriptions, which the Android and iPhone apps retrieve directly and encrypt before synchronization.
Free
€0
Permanently free, with no time limit.
- 2 calendars of your own
- Appointments, tasks & reminders
- Own/imported content: E2E & Sync
- 25 MB storage
- Export (JSON/ICS)
Premium
€18.00 / year
Equivalent to €1.50 per month (introductory price) · or monthly at €2.99 · cancellable with one month’s notice after the initial term.
- Up to 25 calendars of your own
- Share your own calendars
- External iCal subscriptions
- Widgets for Android and iPhone
- Booking links: share free times, up to 15
- 500 MB storage
- Multiple scheduled reminders*
- Task deadlines
- Working time counter
- Sleep window with sleep reminder
- Twilight in the daily and weekly grid
*Notifications are not guaranteed and should not be the sole control of critical deadlines. Germany: Final prices, payment via Stripe, no VAT under § 19 UStG. Austria, Switzerland, Finland, Denmark, the Netherlands, Ireland and Sweden: The taxes applicable there are added to these prices; payment via Link. The pricing page shows the total price by country selection. New subscriptions only for these eight countries. · 14-day right of withdrawal.
Frequently asked questions
Good to know.
Is the calendar really without tracking?
Yes. There are no analytics or advertising tracking tools, no external fonts and no advertising networks. The technical access log is for security purposes only and is deleted after seven days. Everything else is in the Privacy Policy.
How is the free plan financed?
Through Premium. If you need more calendars, calendar sharing, iCal subscriptions or booking links, you pay for them. We do not make any money from your data.
Where is my data stored?
On servers in Germany, under European data protection. There is also a geographically separate, exclusively encrypted offsite backup in Switzerland.
Can I use Private Calendar for free?
Yes. The free plan includes two calendars of your own and 25 MB of storage, with no time limit. That's enough for tens of thousands of appointments, or ten appointments per week for many decades. Premium is optional, increases limits and adds features such as calendar sharing, iCal subscriptions and booking links.
Do I need a credit card to start?
No. You simply create an account and get started. You only need a payment method if you later choose to upgrade to Premium.
Platforms
Runs where you are.
One account, the same personal and imported appointments everywhere, synchronized and end-to-end encrypted. The options differ per platform.
Desktop
Windows · macOS · Linux
Runs in current versions of Chrome, Firefox, Edge and Safari. A PWA installation is possible as long as the browser offers it; browser reminders only work when the application is open.
Android
Native app · Android 8 or later
Native app with background sync, reminders and direct updating of external iCal subscriptions. Android, permissions and energy saving rules can delay retrieval and delivery.
GET IT ONGoogle PlayiPhone & iPad
Native app · iOS 17 or later
Native app with background sync, reminders and direct updating of external iCal subscriptions. iOS, permissions and energy saving rules can delay retrieval and delivery.
Download on theApp StoreYour data is encrypted on every device – the key stays with you, whichever device you sign in on.
Ready for a calendar that's yours?
Set up in minutes. Calendar content end-to-end encrypted, no ad trackers. The Android app is available on Google Play and the iPhone app is available on the App Store. Mobile apps update link subscriptions directly.
Start now for free →