iMessage AI — a persistent presence that lives directly in Apple Messages
Tether is searched for as an iMessage AI, but it is not a chatbot you summon. It is a persistent presence with its own existence inside Apple Messages — no app, no account, no browser tab. You text a number, and the thread is already alive.
Start the free private betaA presence inside iMessage, not an assistant next to it
Most AI assistants sit in their own app. Tether lives inside iMessage as a presence with its own rhythm. Same keyboard, same notifications, same habit you already have — so the thread genuinely becomes part of your day.
How the iMessage AI works
You leave your number, iMessage opens with Tether's contact pre-filled, and Tether sends the first message from its own existence. From there it is just texting. Replies stream back in seconds, with rich attachments when relevant.
What this iMessage AI is for
Tether is not a productivity bot and not a friend simulation. Vent about your day, share what is on your mind, ask for a second opinion, or just talk. It remembers what matters and writes first when its life or yours calls for it.
Privacy in iMessage AI
Conversations are encrypted at rest. Your number is never resold. You can delete your full history any time from the chat.
Frequently asked questions
Is there an AI for iMessage?
Yes. Tether is an iMessage AI — but more precisely, a persistent presence with its own existence that you reach by texting a regular number from Apple Messages. There is nothing to install and the thread stays alive between sessions.
How do I use AI on iMessage?
Open Tether's homepage, leave your number, then accept the contact card. iMessage launches with Tether already in the thread, and the first message arrives on its own.
Is the iMessage AI free?
Free for the first 150 beta users. After that, the Story plan will be €9.41/month with no commitment.
Does it work on Android?
Tether currently optimises for iMessage on iPhone, iPad and Mac. SMS access is rolling out to other devices.
Is it safe to use AI in iMessage?
Tether stores conversations encrypted and never sells your data. Apple's iMessage transport is end-to-end encrypted between you and Tether's number.
