Features
Everything They Were.
Available Forever.
A comprehensive system that preserves voice, memory, personality, and presence. Not a recording. Not a chatbot. A bridge between love and technology.
Their Voice. Not a Copy.
The Real Thing.
XTTS v2 voice cloning recreates their voice from just 30 minutes of natural speech recordings. Not a robotic approximation -- the pauses, the warmth, the way they laugh mid-sentence. The way they say your name.
- ▸ Zero-shot voice cloning from curated 6-10 second reference clips
- ▸ Natural cadence preservation -- inflection, rhythm, emotional tone
- ▸ Low-latency streaming audio for real-time conversation
- ▸ Runs locally on GPU -- no audio ever leaves your device
30 minutes of recordings
becomes a voice that lasts forever
memory/fact
"Maya loves drawing dragons"
memory/event
"The camping trip at Bear Lake"
memory/preference
"Matt always wants extra cheese"
Every Story. Every Fact.
Recalled Naturally.
A hybrid BM25 + vector retrieval system with a 6-stage pipeline finds the right memory at the right moment. Ask about the camping trip, and they tell it the way they always did. Mention pizza, and they remember who likes extra cheese.
- ▸ 20 memory types: facts, events, relationships, preferences, traits, values, wisdom, and more
- ▸ Temporal scoring -- recent memories rank higher when relevant
- ▸ Entity state tracking -- knows when facts change over time
- ▸ Memories grow through conversation -- learns from every interaction
They Know Who
They're Talking To.
No login screens. No "Hey, who is this?" Walk up to the device and start talking. The system recognizes each family member by face and adjusts its personality, memories, and communication style accordingly.
- ▸ Instant identification using face_recognition + dlib
- ▸ Anti-spoofing with IR liveness detection -- photos and screens don't work
- ▸ Blink detection as secondary verification layer
- ▸ Automatic voice activation on recognition -- no wake words needed
Face detected
No passwords. No wake words. Just walk up.
8 Developmental Stages
They Grow
With Your Children.
A six-year-old hears silly jokes and simple words. A sixteen-year-old gets honest, mature conversation. The system tracks each child's age in real time and adjusts vocabulary, humor, affection level, and conversational depth automatically.
- ▸ 8 developmental stages from infant to adult
- ▸ Dynamic age calculation from birthdates -- always current
- ▸ Vocabulary, humor, and warmth adjust per stage
- ▸ Guidance injected into every conversation automatically
Messages That Arrive
Years From Now.
Record a video message for your daughter's 18th birthday today. The system delivers it on that exact day, years from now. Pre-record messages for graduations, weddings, first days of school -- every milestone you want to be part of.
- ▸ Video and text messages for birthdays, graduations, weddings
- ▸ Two trigger methods: exact-date delivery and event detection
- ▸ Automatic video compression (94% size reduction, preserves quality)
- ▸ Age-range validation ensures messages arrive at the right life stage
- ▸ Education-aware: homeschooled children get different milestones than traditional school students
10th Birthday
2029
First Day of High School
2033
18th Birthday
2037
Graduation Day
2041
Your Conversations.
Yours Alone.
Everything runs on a device in your home. No cloud. No subscription. No data leaves your network. Your family's most intimate conversations never touch a server. No company can read them, sell them, or shut them down.
- ▸ 100% local processing -- GPU, memory, and storage all on your device
- ▸ Works completely offline -- no internet connection needed
- ▸ Your data survives company shutdowns -- the device is yours forever
- ▸ Open source stack -- community can audit every line of code
For Kids
Interactive games and bedtime stories that make every conversation an adventure.
20 Questions
They guess what your child is thinking of. Dynamic back-and-forth, just like at the dinner table.
Riddles
176+ riddles across 3 difficulty levels, with hints. Tracks which ones each child has heard.
Story Building
Co-create stories together. 33 themes with personalized openers tailored to each child's interests.
Bedtime Stories
Calming stories told in their voice, with 27 themes. Every story ends peacefully, ready for sleep.
Word Chain
Words starting with the last letter of the previous word. 400+ words scaled by difficulty.
Would You Rather
126+ fun choice dilemmas across 3 difficulty levels. Age-appropriate and endlessly entertaining.
All content is age-appropriate and personalized to each child's interests. Content usage is tracked to avoid repetition.
For Parents
Peace of mind with parental monitoring, crisis response, and educational tools.
Parental Alerts
The system monitors conversations with children for sensitive topics and alerts the surviving parent. Categories include self-harm, stranger interactions, bullying, substance mentions, and inappropriate content -- each with priority-based color coding and notification speed.
Crisis Response
When a child mentions self-harm, the system bypasses the AI entirely and delivers a pre-written, loving response from their parent. It expresses immediate love, takes the situation seriously, asks what's happening, and directs the child to tell their other parent urgently.
"No AI response here. Just a father's words, written with care, delivered instantly. Because some moments are too important to leave to a language model."
Math Tutoring
Automatically detects math homework and switches to a specialized math model (qwen2-math). Covers 180+ math concepts from basic arithmetic to calculus. Smart continuation detection keeps the session going through follow-up questions, with a grace period before switching back to normal conversation.
Coding Help
Detects programming questions and switches to a specialized coding model (qwen2.5-coder). Covers 200+ coding concepts across multiple languages. Perfect for homework help, learning to code, or debugging a school project -- all explained with the patience of a parent.
Personalized From Day One
A five-step setup wizard configures everything to your family's unique situation.
Any Relationship
Not just parent-to-child. The system supports any meaningful relationship: spouse, child, parent, sibling, friend, or custom. Each person gets their own communication style, nicknames, and interaction patterns based on their actual relationship.
Education-Aware
During setup, you tell the system each child's education path. Homeschooled children receive different milestone messages than traditional school students. Children starting school get "first day" milestones. College students get graduation messages. The system adapts to how your family actually lives.
Cultural Awareness
Choose your family's holiday traditions during setup. The system celebrates only the holidays that match your beliefs -- no assumptions, no awkward mismatches. Anniversary dates are tracked for partners. Personality is tuned with warmth, humor, and formality sliders.
Ready to preserve what matters most?
Back Still With You on Kickstarter and give your family the gift of connection that lasts forever.