About this app
Proton Calendar is an easy-to-use planner and a time-management tool that keeps your schedule private
Additional Highlights
✓ Schedule planner syncs automatically across browsers and devices
✓ Create recurring events on a daily, weekly, monthly, yearly, or custom basis
✓ Use as an appointment scheduler in local or foreign time zones
✓ Manage up to 20 calendars (paid feature)
✓ View your agenda from the home screen with the Proton Calendar widget
✓ Add multiple reminders for any event
✓ Use as a daily planner or monthly planner by switching between different views
✓ Choose to view your event schedule in dark mode or light mode
PRIVATE CALENDAR
✓ No ads, no trackers, and no data sharing with any third parties
✓ We can’t spy on your activities or misuse your data
✓ End-to-end encryption — fully encrypted data exchange between Proton Calendar users
✓ Zero-access encryption — event names, descriptions, and participants are encrypted on our servers
✓ Based in Switzerland 🇨🇭 — All your data is protected by strict Swiss privacy laws
USERS FIRST
Building an internet that puts people ahead of profits
✓ Funded by users, not advertisers — privacy is our business model
✓ Built by scientists and engineers who met at CERN and MIT and founded Proton Mail
✓ Used by high-profile journalists and organizations globally
✓ GDPR and HIPAA compliant
✓ Based in Switzerland and protected by some of the world’s strongest privacy laws
What others say about Proton Calendar
“Proton Mail has now made it stupid-easy to encrypt your schedule. Information about what you plan to do, where, and with whom, can be just as sensitive as the messages you send and receive.” Gizmodo
Downloads
1.2.3.4.5.6.7.8.9.0
LATEST
05/29/2026
Download
123.21 MB
1.2.3.4.5.6.7.8.9.0
LATEST05/29/2026
Supported Architectures
MD5 Checksum
50f96ef11c4519c1dced5b62e82c41cb
Minimum SDK Version
23
Version Code
348
Upload Date
May 29, 2026, 2:49:17 PM
1.2.3.4.5.6.7.8.9.0
04/25/2026
Download
123.21 MB
1.2.3.4.5.6.7.8.9.0
04/25/2026
Supported Architectures
MD5 Checksum
93e1cff45004e0686fe7afe6332ebbdf
Minimum SDK Version
23
Version Code
347
Upload Date
Apr 25, 2026, 11:57:19 AM
1.2.3.4.5.6.7.8.9.0
12/10/2025
Download
120.65 MB
1.2.3.4.5.6.7.8.9.0
12/10/2025
Supported Architectures
MD5 Checksum
55c8a93e23d0fd3a71da49595a4df593
Minimum SDK Version
23
Version Code
335
Upload Date
Dec 10, 2025, 6:46:17 PM
1.2.3.4.5.6.7.8.9.0
10/13/2025
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120.48 MB
1.2.3.4.5.6.7.8.9.0
10/13/2025
Supported Architectures
MD5 Checksum
1ed6fcfb27ed89aac4115fd4a389b1e1
Minimum SDK Version
23
Version Code
332
Upload Date
Oct 13, 2025, 3:18:11 PM
1.2.3.4.5.6.7.8.9.0
08/22/2025
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123.08 MB
1.2.3.4.5.6.7.8.9.0
08/22/2025
Supported Architectures
MD5 Checksum
4d3e4aafe2b5eba0136d6c28f7fc8ad9
Minimum SDK Version
23
Version Code
329
Upload Date
Aug 22, 2025, 10:15:55 PM
1.2.3.4.5.6.7.8.9.0
07/29/2025
Download
123.15 MB
1.2.3.4.5.6.7.8.9.0
07/29/2025
Supported Architectures
MD5 Checksum
9c9672274ffc5b1a5dff0a5af3ce3135
Minimum SDK Version
23
Version Code
327
Upload Date
Jul 29, 2025, 12:56:09 PM
1.2.3.4.5.6.7.8.9.0
07/03/2025
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117.2 MB
1.2.3.4.5.6.7.8.9.0
07/03/2025
Supported Architectures
MD5 Checksum
9d5c94339bf8c3ae79b8d2589bf61330
Minimum SDK Version
23
Version Code
321
Upload Date
Jul 3, 2025, 10:53:11 AM
1.2.3.4.5.6.7.8.9.0
06/17/2025
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117.04 MB
1.2.3.4.5.6.7.8.9.0
06/17/2025
Supported Architectures
MD5 Checksum
79f72eada867b8540746c62b10e8ddee
Minimum SDK Version
23
Version Code
320
Upload Date
Jun 17, 2025, 5:48:21 PM
1.2.3.4.5.6.7.8.9.0
12/23/2024
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109.8 MB
1.2.3.4.5.6.7.8.9.0
12/23/2024
Supported Architectures
MD5 Checksum
913ffd413eab6e347c7ab20b22c2bc51
Minimum SDK Version
23
Version Code
299
Upload Date
Dec 23, 2024, 2:14:06 PM
1.2.3.4.5.6.7.8.9.0
11/20/2024
Download
108.47 MB
1.2.3.4.5.6.7.8.9.0
11/20/2024
Supported Architectures
MD5 Checksum
cf6749c31a11597953dccd94b734ab6d
Minimum SDK Version
23
Version Code
292
Upload Date
Nov 20, 2024, 3:23:17 PM
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