Sync your Proton contacts & calendar to Android with end-to-end encryption
About Sync Provider for Proton
Sync Provider for Proton is a productivity app developed by BEO.
Download Statistics
Sync Provider for Proton has been downloaded 26 times. In the last 30 days, the app was downloaded 22 times.
User Ratings
The app has no ratings yet.
App Information
Sync Provider for Proton costs $5.00 to download. The last update was on July 9, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play a couple of days.
Description
Sync your Proton Mail contacts and Proton Calendar events directly to your Android device — securely and automatically.
Sync Provider for Proton is an independent sync client that brings your Proton contacts and calendar events to your phone's native Contacts and Calendar apps. All data is protected with end-to-end encryption using OpenPGP, just like Proton itself.
KEY FEATURES • Two-way sync — Changes made on your phone sync back to Proton, and vice versa • End-to-end encryption — Your data is encrypted with your own keys before transmission • Native integration — Contacts appear in your phone's Contacts app; events appear in your Calendar app • Automatic background sync — Configurable intervals: 15 min, 30 min, 1 hour, 4 hours, or manual • Secure authentication — SRP protocol with two-factor authentication (TOTP) support • Contact groups — Proton labels sync as Android contact groups • Full calendar support — Recurring events, reminders, attendees, and multiple calendars • No tracking — Zero analytics, no ads, no third-party data sharing • Battery friendly — Uses Android's native sync framework with configurable sync windows
WHAT YOU NEED • A Proton Mail account (free or paid) • Android 10 or later
SUBSCRIPTION This app requires a monthly subscription. Subscription pricing is shown before purchase. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel your subscription anytime in Google Play Store > Account > Subscriptions.
PRIVACY & SECURITY • All contact and calendar data is encrypted end-to-end using OpenPGP • Your password never leaves your device (SRP authentication) • Sensitive credentials are stored in Android's hardware-backed Keystore • No data is shared with third parties — your data goes only to Proton's servers • No analytics, crash reporting, or tracking SDKs
DISCLAIMER This app is not affiliated with, endorsed by, or officially connected to Proton AG or any of its subsidiaries. "Proton", "Proton Mail", and "Proton Calendar" are trademarks of Proton AG. This app uses Proton's publicly available API to provide sync functionality.
SUPPORT Questions or issues? Contact us at support+spp@olausson.de or visit https://apps.olausson.de
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Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
