What we're building

Notes on privacy, boundaries, and quiet software — written while we build Seylen. More to come as we go.

Is it private to talk to an AI? Here's where your words actually go.

Seylen's AI runs on our own hardware, not a third-party service — and your conversations are encrypted, in transit and at rest.

A companion, not a therapist — what Seylen is, and isn't

Seylen sits in the gap between 'I'm fine' and needing a clinician — a companion, not a substitute for professional care.

Join the waitlist ›

Seylen opens this fall.