Your personal contact lists and your calendars are amongst the most valuable and private information you can have, yet currently they are being stored WITHOUT end-to-end encryption.
Infinite Disk provides a common end-to-end encrypted personal information storage that works across all your devices.
Currently the secured syncing of your Contacts and Calendars to Infinite Disk is implemented with the open sourced EteSync software.
IMPORTANT:
During installation, please allow ALL permission prompts and set LOCAL for both Sync Contact and Sync Calendars & Reminders.
If you would like to continue using iCloud for calendars and reminders and use EteSync in parallel, a fake DAV account for EteSync is required (based on iOS 15.4.1).
1. iOS Contacts
To protect your iOS Contacts you can synchronise them to Infinite Disk under end-to-end encryption by following the steps below.
Open the Settings app.
Scroll down and open Contacts -> Accounts -> Add Account -> Other -> Add CardDAV Account.