Tacendum — Private Messaging
End-to-end encrypted. Always.
About
This app offers end-to-end encrypted private messaging, rooms, and calls without requiring any personal sign-up information. It prioritizes user privacy with features like disappearing messages and screenshot notifications.
What's New in Tacendum
1.1.1
October 13, 2026
This update fixes using Tacendum on more than one device. • Linked devices now agree. If your account already has a username or a verified email, every linked device shows it as set up instead of asking you to set it up again. You can change or remove your username, remove the email, and switch whether people can find you by them, from any linked device. The name and the address themselves still show only on the device that last set them; your other devices say they are set on another device. • Linking a new device now works for accounts that verified an email first. • Unlinking a device, revoking a lost one and going back to anonymous now work on every device. • A device that is not linked to your account now explains how to link it. • Clearer messages when a username change has to wait (with the date), when today's searches are used up, and when you search for yourself.
MoreFAQ
Does Tacendum have ads?
No, Tacendum is ad-free. The app description explicitly states 'No ads, no trackers.'
How does Tacendum handle privacy?
Tacendum uses end-to-end encryption with the Signal protocol for all communications. It requires no personal sign-up information, has no directory, and offers features like disappearing messages and screenshot disclosures to enhance user privacy.
What devices is Tacendum available on?
Tacendum is available for iPhone, iPad, and iPod devices.
How do I add contacts in Tacendum?
You can add contacts by scanning a code in person, or optionally linking an email or username in Settings to enable findability. There is no automatic contact upload or directory.
Can I recover lost messages or keys in Tacendum?
No, message and key recovery is not possible by design. The encryption key never leaves your phone, meaning if you lose your device, your message history cannot be recovered.
What is the age rating for Tacendum?
Tacendum has an age rating of 17+, indicating it is intended for mature audiences.
How often is Tacendum updated?
The app was last updated on October 7, 2026, with version 1.1. This suggests a relatively recent update, though the frequency of future updates is not specified.
What is the app lock feature in Tacendum?
Tacendum offers an app lock with a passcode that is separate from your phone's lock. It includes an auto-lock delay and a decoy option where entering the code backward opens a fake set of conversations.
