Proton Calendar: Secure Events app icon

Proton Calendar: Secure Events

Private calendar: Reminders, schedule planner, calendar widget, time-management

Proton Technologies AG · me.proton.android.calendar

5.0 (5 ratings) 1M+ downloads v2.34.1 122.9 MB Android 6.0+ PEGI 3 · Everyone

Download APK 122.9 MB All versions
  • Signature matches the Google Play version Details

At a glance

Latest version
v2.34.1 (360)
Updated
Sep 30, 2026 (8 days ago)
APK size
122.9 MB
Requires
Android 6.0+ (API 23)
CPU support
x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category
Productivity (app)
Listed since
Aug 20, 2021 (at least)
Permissions
13 (2 sensitive)
Website
protonmail.com
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

Proton Calendar: Secure Events is an app by Proton Technologies AG in the Productivity category, listed since at least August 2021. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

It asks for 13 permissions, 2 of them sensitive: camera and read contacts. It asks for the same permissions as version 2.34.0.

Ratings

5.0out of 55 ratings
  • 5 ★100%
  • 4 ★0%
  • 3 ★0%
  • 2 ★0%
  • 1 ★0%

Ratings from users of the source store — not collected or verified by AAPKs.

What's new in v2.34.1

Minor fixes and improvements.

Description

From the listing uploaded by “appupdater”.

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

Version history

6 versions are listed, going back to v2.24.0.

v2.34.1 LATEST Sep 30, 2026 122.9 MB TRUSTED v2.34.0 Sep 7, 2026 122.9 MB TRUSTED v2.33.2 Sep 8, 2026 123.3 MB TRUSTED v2.33.0 Oct 4, 2026 123.3 MB TRUSTED v2.30.1 Apr 26, 2026 120.7 MB TRUSTED

All 6 versions

Security & authenticity

Security rating: Trusted

Signing certificate

  • Signature matches the Google Play version Checked by the source store on Sep 30, 2026.
  • Certificate issued to “Proton Technologies AG” This is the certificate of the Google Play version.
  • Same certificate as the 3 other versions checked

Store checks and file details

  • Developer signature not checked yet Sep 30, 2026
  • Validated against Google Play Sep 30, 2026
  • Signed byCN=Proton Technologies AG, OU=Proton Technologies AG, O=Proton Technologies AG, L=Geneva, ST=Geneva, C=CH
  • Signing certificate (SHA-1)D8:E1:EE:3F:F3:A7:F6:EC:46:88:3C:89:80:32:FE:03:C2:3E:EC:20
  • File MD5d52efc38898a9dfbc91cf45e1c91c2de
  • Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (3 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (13)

Proton Calendar: Secure Events requests 13 permissions, 2 of them sensitive.

Required hardware & features

Proton Calendar: Secure Events APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Proton Calendar: Secure Events APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 3 other versions checked. After downloading, check that the file's MD5 is d52efc38898a9dfbc91cf45e1c91c2de.

Tags

proton android calendar productivity

More Productivity apps