PHI Sentinel is an AI companion that lives in your ear. It understands your emotions from your voice, speaks only when it matters, and keeps your secrets forever.
Join the Waitlist"PHI doesn't change your will.
It gives you a choice in the moment
you wouldn't otherwise have one."
Real transcript from a live test. March 2026. Not scripted — generated by PHI in real time.
PHI is quiet 90% of the time. It speaks only when it has something genuinely worth saying. Because silence is the default — not noise.
Real-time voice emotion analysis detects stress, tension, and calm — all processed on your phone, never in the cloud. PHI feels what you feel.
Your voice, location, and memories never leave your device. PHI sends only anonymous context to the cloud — never who you are or what you said.
Year 1: an assistant that learns. Year 3: a companion that knows you. Year 10: your legacy. PHI's goal is to eventually become unnecessary.
The cloud never sees who you are, where you are, or what you said. It sees a 1KB anonymous context vector. That's all it needs to help. That's all it gets.
Powered by native Rust & Kotlin core · Offline audio processing < 5ms · 12,000+ lines of production code
Every AI companion on the market sends your data to their servers. PHI is the only one that doesn't. Your voice stays on your phone. Your memories stay encrypted. Your life stays yours.
PHI Sentinel was designed and built by Marek Adamski — solo founder, product visionary, non-programmer who managed two AI systems to write 12,000+ lines of production Rust and Kotlin. The prototype works. Now it needs a team.
Rust/Kotlin, audio DSP, mobile AI. Someone who wants to build the future of companion intelligence.
€500K to hire CTO, build beta, launch to 1,000 users. UK SEIS eligible — 50% tax relief for investors.
We're building something that's never existed before. Join the waitlist and be the first to know when PHI is ready.