Personal AI · Second Brain · Not for everyone
MYStacy
She's not for everyone.
She's for you.
AES-256-GCM encrypted
No data sold. Ever.
Works via SMS
What Stacy does
01 — Intelligence
Not a feature.
A relationship.
Stacy is a named, persistent AI with memory. She doesn't just respond — she knows. Every task, contact, conversation, and pattern you've ever shared becomes part of how she thinks about you.
001
🧠
Stacy — Your AI
A named, persistent AI assistant with memory and personality. Not a chatbot — a relationship. She captures thoughts in under 2 seconds and operates with full context of your life.
002
📡
Contact Intelligence
Passively reads every inbound communication and builds rich relationship profiles on every person you interact with. No manual input. It just knows who matters.
003
💬
SMS Agent
Text Stacy from anywhere. She responds, captures tasks, and acts — no app required. Your second brain travels with you in your pocket at all times.
004
⚡
Quick Capture
Brain-dump anything in under 2 seconds. Voice, text, idea — captured before you lose it. Stacy organizes it, prioritizes it, and surfaces it when relevant.
005
🔒
Encrypted by Design
Client-side AES-256-GCM encryption. Your data never touches AI raw. Supabase stores only ciphertext. Your thoughts stay yours — always.
006
🎯
Tasks + Projects
A unified task system connected to AI, not siloed from it. Stacy knows your deadlines, your blockers, and what to prioritize — before you have to ask.
Who it's built for
02 — The User
Built for minds that
can't afford to slow down.
Mystacy is not for everyone. It's for the physician running a practice and a side business. The founder managing five priorities simultaneously. The operator who is drowning in information and losing leverage to noise.
The Physician
"I see 30 patients a day. I can't be managing software between charts. I need one thing that handles everything."
Physician · Practice owner · Clinic founder
The Founder
"I run three businesses simultaneously. My brain is at capacity. I need a second brain that actually works."
Entrepreneur · Operator · Builder
The Senior Operator
"I've tried every productivity tool. None of them know me. I need something that gets smarter over time."
Executive · Attorney · Financial advisor
Not for you if…
"You want a to-do list. You want another chatbot. You want something free. Stacy is none of those things."
Mystacy is premium, intentional, and rare.
How it works
03 — The Experience
She works.
You think.
01
You get access — by invitation only
No public signup. You either get invited or you wait. Exclusivity is the first feature.
02
Stacy learns who you are
She reads your patterns, your contacts, your communications. Passively. No manual setup required.
03
You capture anything, anywhere
Text Stacy via SMS. Use the app. Voice memo. Under 2 seconds from thought to captured — wherever you are.
04
She handles what you shouldn't be doing
Task prioritization, contact intelligence, briefings, follow-ups. She runs the operating layer so you operate at the thinking layer.
05
She gets smarter every week
Every interaction deepens her model of you. After 90 days, she anticipates before you ask. That's the compounding advantage.
M
Y
S
T
A
C
Y
The name contains a secret.
The first four letters spell MYSTERY. It's not accidental. The system knows things about you that you haven't told it directly. That's not surveillance — that's intelligence. The mystery is what makes it feel alive.
Pricing
04 — Investment
Premium pricing.
Premium outcomes.
No freemium. No trial. The price is the first signal that this is not another productivity app. If you're the right person, it's the best money you'll spend.
Essential
$99
per month · billed annually
For the professional who needs Stacy in their corner — personal use, one device, full intelligence.
  • Stacy AI assistant — full memory
  • Quick Capture — voice & text
  • SMS Agent — text Stacy anywhere
  • Task & Project management
  • Contact Intelligence Layer
  • AES-256-GCM encryption
Most Popular
Professional
$199
per month · billed annually
For the operator running multiple things simultaneously. Everything in Essential, plus deeper intelligence.
  • Everything in Essential
  • Multi-model AI Chat (Claude, GPT-4o)
  • Gmail + Calendar integration
  • Advanced contact intelligence
  • Priority SMS response time
  • Stacy personality customization
  • Weekly AI briefing digest
Sovereign
$299
per month · billed annually
For the founder or physician who needs a complete cognitive infrastructure. Nothing held back.
  • Everything in Professional
  • Dedicated onboarding session
  • Custom Stacy personality build
  • Priority support — 4hr response
  • Early access to new features
  • Quarterly strategy review call
  • White-glove data migration
Do you have
a Stacy?
The people who do don't talk about productivity tools. They just operate differently. Faster. Clearer. With more leverage than the people around them. Now you know why.
Request Access ↓
Invite-only · No card required · We respond personally