Your life is forever.
Eien keeps it that way.
Capture photos, voice, video, and moments. Eien uses AI to weave them into a living timeline — keeping you and your loved ones' memories forever.
Your life, as an eternal timeline.
One day the people you love will be gone — their voice, their laugh, the way they looked at you. Capture it now. Eien keeps it forever.
Give it a try. Click any title, caption, or tag to make it yours.
Eien is ready to capture this moment. Add a photo, voice recording, or a few words — and it becomes part of your forever timeline.
Three steps to forever.
Your memories become part of a permanent, living system. One that grows with you — and never lets go.
Capture
Photos, voice, video, text — or let Eien Lens capture automatically. Every moment, effortlessly preserved forever.
Eien Weaves
Eien's AI places each moment on your timeline — organizing, tagging, and connecting across years of memory into one eternal record.
Forever
Your timeline lives forever. Your loved ones' voices, faces, and moments — permanent. Always there when you need them.
Everything you need
to keep them forever.
Eien Thread
Your complete life timeline. Every moment a node. Every year a chapter. Scroll across decades — forever.
Eien Recall
Find any moment instantly. Any face, any place, any conversation. Search your forever in seconds.
Eien Insight
AI detects patterns across years of memory — surfacing life chapters and connections hidden across time.
Eien One
The wearable AI camera. Voice-triggered today, autonomous tomorrow. 'Hey Eien, record this.'
Eien Legacy
Their voice. Their wisdom. Their love. Preserved forever — surfaced by Eien when you need them most.
Private by Design
End-to-end encrypted. Nothing shared without your permission. Your forever belongs only to you.
Your forever belongs to you.
Not to a platform.
Eien records nothing by default. Only the moments you choose become part of your timeline. AI helps organize and understand those moments — but your memories, your identity, and your forever always remain entirely under your control.
Some moments are too important to only be remembered by one person.
Eien is building two features that change what a life archive can be. Neither exists anywhere else.
Hear them again.
The people you love can leave messages, voice recordings, and moments inside your timeline — surfaced by Eien when you need them most.
Not a notification. Not a reminder. An AI that understands when a hard moment calls for a voice you miss.
How are you doing today? Anything on your mind worth capturing?
"Life's a bitch and everything seems to be against me lately."
Your dad left you something.
"Hey son, if you're hearing this — I just want you to know I'm proud of how far you've come. I'm still here, in every moment you saved."
Your story, told by everyone who lived it with you.
Invite your circle — family, close friends, anyone who holds a piece of your story. They add voice, video, photos, and memories to your helix directly.
Eien connects their moments to yours — building a timeline that captures your life from every angle, not just the one you could see.
"I remember the night before your first day of school. You were so nervous — you made me promise three times the bus would come."
Shared by Mom · 1997
"Found this in my phone. The night you pitched your first startup. None of us slept."
Shared by James · 2019
"Dad drove four hours to be there when we got the term sheet. Didn't tell me he was coming."
You · 2019
Every moment added by your circle is tagged to that person — so Eien can graph the relationships, emotions, and threads that connect you across years. A life story built from all the people who shaped it, not just the one who lived it.
Join the waitlist to get early accessKeep them forever.
Start with Eien.
Join a small group building their forever timelines in private beta. We're making sure every memory is kept right before we open the doors.
Questions about Eien.
What is Eien?+
Eien is a sentient AI memory companion that keeps your life — and the lives of your loved ones — forever. You capture moments with photos, voice, video, or text, and Eien preserves them permanently.
What does Eien mean?+
Eien (永遠) is Japanese for eternal permanence — the idea that something continues forever. Pronounced EE-EN. Your memories aren't just stored. They're permanent.
Can I add moments from my past?+
Yes. You can add memories from any point in your life — childhood, milestones, travels, relationships. Eien holds them all, permanently.
Does Eien record everything automatically?+
No. Nothing is recorded without your knowledge. Eien One captures when you ask — and eventually learns what matters to you. You're always in control of your forever.
How does Eien's AI work?+
Eien AI organizes moments across time, detects patterns in your life chapters, connects people and places across years, and surfaces the right memory when you need it most.
What is Eien Legacy?+
Eien Legacy preserves the people you love beyond their lifetime. Their voice, their wisdom, their love — kept forever, surfaced by Eien during the moments you need them most.
What is Eien Circle?+
Eien Circle lets family and close friends contribute memories to your timeline. Their perspective, their moments, their voices, their photos — woven into your permanent record from every angle.
Who owns my memories?+
You do. Always. Eien is end-to-end encrypted. We will never sell, share, or train on your memories. Your forever belongs only to you.