TAU

An AI that
remembers you. Privately.

Personal AI for iPhone, with memory you can see, edit and delete.

Join the launch listExplore TAU →

Currently in prelaunch.

Illustrated TAU chat on an angled black iPhone: planning a simple morning with coffee, toast and time outside.

Under your control

See what your AI remembers.

Your saved context, visible and editable in Memories.

  • Read what’s there.View
  • Keep it accurate.Edit
  • Add what matters.Add
  • Let something go.Delete
Three illustrated TAU memory cards labelled Chat, Inferred and Manual: baking on quiet Sundays, quiet weekend plans and vegetarian dinners, each with edit and delete controls.

As your life changes

Memory should stay current.

Keep your saved context accurate. Add memories manually, or check, edit and remove them as things change.

Illustrated TAU Memories view with the indicator TAU is writing memories and editable work memories about focused task lists, friendly client emails and a design portfolio.

Continuity

You don’t start from zero.

TAU recalls what matters to you, like your preference for baking on quiet Sundays.

Illustrated TAU chat on iPhone: asked what the user likes on a quiet Sunday, TAU recalls a preference for baking simple pastries and suggests cookies.

Tone

Choose your tone.

Direct, Warm or Playful. Choose how you want TAU to respond.

TAU tone settings showing Direct, Warm and Playful, with Warm selected.

Vanish

Some thoughts can be temporary.

A temporary conversation. Your existing memories remain.

  1. 01
    Swipe up. Let go.

    Pull upward from the bottom of chat and release to enter Vanish.

  2. 02
    Keep it temporary.

    Messages aren’t saved to your thread and don’t create new memories.

  3. 03
    Return to your thread.

    Repeat to exit. The temporary chat is removed and your history returns.

Illustrated TAU Vanish on iPhone. An Ephemeral — won't be saved marker separates a temporary exchange about kindly declining dinner from the earlier chat.

Offline, by architecture

Your world.
Airplane mode.

After the initial model download, core chat and personal memory work on your iPhone without a connection.

Plans at launch

Start with TAU.

Free

$0

  • Up to 50 saved memories
  • Basic use of memories in conversation
  • Unlimited messages
Pro

$9.99per month

or $59.99 a year

  • Unlimited saved memories
  • Better retention and use of your memories in conversation
  • Unlimited messages
  • New TAU features included as they are released

Prices may change before launch.

Questions

Does it work offline?

Yes, after the initial ~2.3 GB model download. Qwen3-4B runs on your iPhone for core chat and memory. Accounts, downloads and subscriptions still need a connection.

Which iPhones does it run on?

iPhone 15 Pro or newer with at least 8 GB of memory.

Where are my conversations and memories stored?

In the app's private storage on your iPhone. They are not sent to a cloud model as part of normal core AI processing.

What happens if I delete the app?

Removing TAU removes its local chat and memory database. Vecorps does not hold a server-side copy of that history to restore.

What is the difference between Free and Pro?

Both include unlimited messages. Free saves up to 50 memories with basic use in conversation. Pro adds unlimited saved memories, better retention and use of those memories in context, and new TAU features as they are released.

What are the TAU research models?

Internal experiments in efficient and adaptive personal AI. They are separate from Qwen3-4B, the model in the current app. Explore Vecorps research

Be there from the beginning.

One email when TAU launches.

Privacy Policy