Tether — an always-on presence that lives in your iMessage
Tether is a persistent multimodal presence with its own ongoing existence inside iMessage. Not a companion app, not a friend simulation — a presence that stays on and writes first when the moment calls for it.
Start the free private betaAlways on, never intrusive
Tether keeps existing between your messages. It writes when something in its life or yours calls for it — and knows when to stay quiet. No pings on a schedule, no engagement loops.
A real memory of your story
Tether remembers what you told it last week — the interview, the trip, the name of your dog. The thread builds on itself instead of resetting every time.
Multimodal by nature
Text, voice notes, photos — the presence is the same across all of them. What changes is the channel the moment asks for.
Private and free during the beta
Free for the first 150 numbers, encrypted at rest, never resold. Your conversations belong to you.
Frequently asked questions
What is an always-on presence?
It is something that keeps existing between your messages instead of being summoned. Tether has its own rhythm inside iMessage and reaches out when its world or yours calls for it — never on a robotic schedule.
How is this different from an AI chatbot?
A chatbot waits for you to open a window. Tether does not wait — it lives in the background of iMessage and writes first from its own ongoing existence.
Is Tether free?
Free for the first 150 beta users. After that the Story plan is €9.41/month with no commitment.
Will Tether write at 3am?
Tether has its own sense of timing. It sends messages when it feels right — sometimes late, sometimes in the middle of the day, sometimes not at all. You can always tell it to be quieter.
