An AI that
remembers you.Privately.
Your AI. Your memory. Your device.
01 / Continuity
You don’t start from zero.
Set a preference, come back to a goal, and share something new. TAU can use what you’ve told it to keep the conversation connected.
- Preference
“I prefer short, practical advice.”
- Practice
“I’m learning the piano.”
- Later
“I also like quiet cafés for reading.”
02 / As your life changes
Memory should stay current.
As your plans change, TAU can add useful context from the conversation. Review what it keeps in Memories, and edit or remove an entry whenever it stops being right.
03 / Under your control
See what your AI remembers.
Personal memory should be something you can open, understand and change.
- Read what’s there.View
- Keep it accurate.Edit
- Add what matters.Add
- Let something go.Delete
04 / Vanish
Some thoughts can be temporary.
A separate space for a conversation you don’t want saved in your persistent thread. Your existing memories remain.
- 01Swipe up. Let go.
At the bottom of your chat, pull upward and release to enter Vanish.
- 02Keep this conversation temporary.
These messages aren’t saved to your persistent chat and don’t create new memories.
- 03Return to your thread.
Repeat the gesture to exit. The temporary conversation is removed and your original history returns.
05 / Offline, by architecture
Your world.
Airplane mode.
After the one-time model download, core chat and personal memory work on your iPhone. No connection needed for the conversation.
~2.3 GB for the model. Download it once over an internet connection.
Your iPhone runs the model and stores your chat and personal memory.
Account services, downloads and external services still require a connection.
06 / Inside TAU
Local at its core.
A clear architecture behind a personal experience.
Explore our research →- Current model
- Qwen3-4B, running locally on your iPhone.
- Personal memory
- Persistent context you can view, add, edit and delete.
- Storage
- Conversations and personal memory in the app’s private storage on your device.
- Your control
- Manage memories individually. Use Vanish for a temporary conversation.
- Research
- TAU CORE is an internal research program. It is not the model powering TAU today.
A little more personal.
Two illustrated stories about continuity and change. Press play when you’re ready.
A Day With TAU
00:17Film description & transcript
One day. Same context. Start with one clear priority, take a break when you need it, then find a read that fits your evening, without losing the thread. You don’t start from zero. Intelligence that stays yours.
Illustrated scenes: a morning priority, a twenty-minute break and a short, practical read in the evening. The phone shows one continuing conversation.
You Change
00:20Film description & transcript
You changed. Your AI should too. When you say you’ve moved, it updates what it remembers. Miami makes way for New York, right in Memories. Your context keeps up with you. Even offline. Intelligence that stays yours.
In this illustrated scenario, Jordan tells TAU about a move from Miami to New York. Memories shows the current city as New York. The film then presents core chat in airplane mode, after the initial model download.
Choose your space
Personal, from day one.
$0forever
TAU remembers what matters.
On-device, with a focused memory. After the model download, the core experience works offline.
$9.99per month
or $59.99 a year
TAU remembers more of your life.
Longer history, a better use of memory, and the features still to come.
Questions
Which model does TAU run?
Qwen3-4B, an open-source language model. It downloads to your iPhone on first launch, then runs entirely on the device. Nothing you say is sent out for inference.
Does it work offline?
After that first download, yes. TAU's current core experience, chat and memory, works offline. The model, your conversations, and your personal memory live on your phone.
How large is the download?
The model is about 2.3 GB. That is a one-time download of the model files. Your conversations are never part of it.
Which iPhones does it run on?
iPhone 15 Pro or newer with at least 8 GB of memory.
Can Vecorps read what I say?
No. Conversations and memories stay in the app's private storage on your device. Vecorps does not receive or store your conversation history or personal memory as part of normal AI processing, so there is no server-side copy for us to retrieve.
What happens if I delete the app?
Uninstalling TAU erases the local database, including its memory of you. We cannot restore it. Deleting your account from Settings does the same, and also removes your account from our servers.
What is the difference between Free and Pro?
Free: TAU remembers what matters, with a focused memory, at $0. Pro: TAU remembers more of your life, with a longer history and a better use of memory. New features land in Pro. $9.99 a month or $59.99 a year, billed by Apple.
What is TAU CORE?
TAU CORE is Vecorps' internal model research program. It explores efficient and adaptive personal AI across several model scales. TAU today runs Qwen3-4B. TAU CORE is not the current app runtime. Explore Vecorps research
Be there from the beginning.
One email when TAU launches.