Privacy: what 1B Calendar connects to and where your data is

What 1B Calendar connects to

Only to the services you add: Google, Microsoft, Apple (iCloud), your CalDAV servers and the .ics links you subscribe to, over encrypted connections (HTTPS), straight from your computer.

And, to check for updates, one file on 1bytesystems.com. That request carries none of your data — no events, no accounts, no identifier; like any connection, our server sees your IP address and the app's version. You can turn the check off (chapter 10).

Signing in with Google or Microsoft happens in your browser, on their pages; your browser then hands the result back to 1B Calendar on your own computer.

Where your data is

Your events and settings are stored on your computer: on Linux in ~/.local/share/1bcalendar, on Windows in %LOCALAPPDATA%\1Byte Systems\1B Calendar.

Passwords and sign-in keys are stored encrypted (AES-GCM), and the key that opens them is kept in your system's keychain (Secret Service on Linux, Credential Manager on Windows).

Your agenda and other 1B apps

With Share my agenda with 1B Dock and 1B Mail (in Settings › 1B apps), those apps can show your next events. Only titles and times, and only on this computer; turn it off if you prefer.

Remove an account or everything

Settings › Accounts › Remove account › Remove from this computer deletes that account's events and keys from your computer; nothing is deleted in the service.

To remove everything, uninstall the app and then delete the data folder above.