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The calendar with no account to sign up for

· 3 min read
Kash

Most apps greet you with a wall: sign in, or create an account. A calendar app doing that is quietly asking you to route your dentist appointments, your interviews, and your "lunch??" through a stranger's servers so it can hand them back to you later. KashCal never asks. There is no account, because there is nothing to sign into.

No account, because there are no KashCal servers​

This isn't a privacy setting you switch on. It's the shape of the app. There is no KashCal account to create, no KashCal server anywhere for your events to pass through, and no analytics, telemetry, or ad SDK riding along inside. There is, quite literally, nowhere for us to send your data, so there is nothing for us to collect. A privacy policy is easy to write when the honest version is "we don't have your data and never did."

Your calendar lives on your phone​

Your events sit in a secure database on your device that other apps can't read. The only things that ever leave your phone go to servers you chose: your events sync to your own calendar server, iCloud, Nextcloud, Fastmail, or any CalDAV service, and an RSVP goes to the organizer who invited you. Nothing else goes anywhere.

And when you're offline, none of that matters. KashCal is offline-first: everything you do lands instantly on the device, and it quietly catches up with your servers when there's a connection. A plane, a basement, a dead zone, the calendar still works.

Passwords that can't be lifted from a backup​

When you connect a calendar server, its password is encrypted on your device with AES-256, and the key lives in the Android Keystore, hardware-backed where the phone supports it. The key is tied to that one device, so a stolen backup can't be replayed onto another phone to reach your accounts. The trade-off is honest: move to a new phone and you re-enter your passwords. We think that's the right side of the line.

Permissions you can actually reason about​

KashCal asks only for what a feature in front of you needs, and it asks in context, with a plain reason. Contacts is for suggesting guests and showing birthdays. Calendar access is for showing the calendars other apps already keep on your phone. Decline any of it and the rest of the app keeps working. No all-or-nothing gate at the door.

Free, and open about it​

KashCal is free and open source under Apache-2.0, so "we don't track you" isn't a promise you have to take on faith. The source is right there to read. If we ever added a tracker, someone would see the commit.

Get KashCal free on F-Droid. No account, no ads, no catch. Read how privacy works in full.

Your calendar was never anyone else's business. Now it's built that way.