We build on a simple conviction: the most personal technology ever made should be private, run on your own device, and stay yours. Here is how we think about it.
Your thoughts shouldn't live on someone else's server.
A real companion sees your messages, your habits, your relationships, your doubts. That kind of intimacy only earns trust if you stay in control of it. So TAU runs entirely on your device, and your memory belongs to you — nothing leaves your phone unless you explicitly choose to. No silent sync, no profile built about you in the background, nothing sold.
The computation comes to you — not the other way around.
For a decade the deal was: send your data to a datacenter, get intelligence back. We invert it. TAU runs a leading open-source model entirely on your phone, so the intelligence lives where your life already is. No connection required. Nothing in transit to intercept.
You should be able to see, edit, and delete everything it knows.
Memory is the feature — and memory you can't inspect is surveillance with better manners. TAU keeps its model of you in plain view. Open the Memories screen, read it back in your own words, change what's wrong, remove what you'd rather it forget. You hold the key.
Built to make you more capable — not more dependent.
The easy business of companion AI is engineered loneliness: streaks, nudges, manufactured longing. We refuse it. No engagement tricks. No notifications designed to pull you back. No data sold. TAU's only job is to leave you better off when you put the phone down.