Personal AI.
Clear boundaries.
TAU keeps its core AI and personal memory on your iPhone. Account services, downloads and subscriptions have separate roles. Here is how those choices shape the product.
01Local and connected
Know what runs where.
TAU runs Qwen3-4B on your iPhone. Conversations and personal memory are stored in the app's local storage. They are not sent to a cloud model as part of normal core AI processing.
- On your iPhone
- Core model inference, conversation history and personal memory.
- Connected services
- Account management, the initial model download, Apple subscriptions and the website launch list.
These connected services can require network access. The offline core does not mean that every part of the product or website works without a connection.
02Offline core
Download once. Use the core offline.
After the initial model download, TAU's core chat and memory experience can work without an internet connection.
Local execution uses the phone's memory and storage. TAU requires a compatible iPhone with at least 8 GB of memory and an initial model download of ~2.3 GB.
03Memory control
What it remembers should be yours to change.
Useful memory should remain understandable. TAU's Memories screen lets you see the information it keeps, correct what is wrong, add something that matters and remove what you no longer want it to remember.
04Personal agency
Personal AI, not artificial relationship.
We build TAU for practical help, with no engagement tricks designed to manufacture dependence and no selling personal data. The standard is useful assistance that leaves the person in control.