Trinity — Privacy Policy
Last updated: 21 August 2026
Trinity collects nothing. It has no analytics, no crash reporting service, no advertising identifier, and no server of its own. The developer receives no data about you or your use of the app.
What Trinity is
Trinity is a client for the Matrix protocol. It is not a service. In the same way a mail app connects to a mailbox that belongs to you or your organisation, Trinity connects to a Matrix homeserver whose address you type when you sign in.
Your messages, photos, videos and call setup travel between your device and that homeserver. Who operates it, where it is, and what it keeps are decided by whoever runs it — which may be you.
What stays on your device
- Your session, so you do not sign in every time
- Your preferences: theme, text size, per-conversation notification sound
- A cache of images and stickers, which the system may clear when it needs space
- A short diagnostic log, visible in Settings, that records what the app's extensions did. It contains no message content and never leaves the device unless you choose to share it.
Signing out removes the session from the device.
Notifications
If you enable notifications, Apple issues your device a token, and Trinity gives that token to your homeserver so it knows where to deliver alerts.
The content of your messages is not sent through Apple's push service. A notification carries only identifiers; your device then retrieves the message from your own homeserver and shows it. Message text therefore never passes through push infrastructure.
Calls
Voice and video calls connect directly between the two devices whenever the networks allow it. When they do not, audio and video are relayed by the TURN server your homeserver provides. Call setup messages travel through your homeserver, like any other message.
Camera, microphone and photo library
Trinity asks for access to your camera and microphone only to take photos, record video and make calls, and for your photo library only when you choose to send something from it. Nothing is accessed in the background, and nothing is uploaded unless you send it.
Siri and CarPlay
If you allow it, Siri can read incoming messages aloud and send replies you dictate. This uses Apple's Siri service, governed by Apple's own privacy policy. Messages you have covered with a spoiler, or that are set to disappear, are never read aloud.
Children
Trinity is not directed at children and collects no information from anyone, regardless of age.
Changes
If this policy changes, the date at the top changes with it.
Contact
Questions about this policy can be sent to the address on the support page.