Synthius

Your digital shadow.

Synthius brings your memories, personality and life experience together in a digital self. Explore it, reflect with it and put it to work with compatible AI assistants.

Explore digital personas

Currently by invitation

“There are three things extremely hard: steel, a diamond, and to know one’s self.”

— Benjamin Franklin, Poor Richard’s Almanack (1750)

01 / Remember

Keep the details.

Add conversations, journals and documents, or start with an interview. Connect the events, relationships and preferences that make up your life.

Your records, with their sources

02 / Reflect

See your patterns.

Explore life timelines and emotional patterns in Mind Palace. Compare your answers with your persona’s in Big Five and other quizzes.

Timelines, reports & quizzes

03 / Move forward

Make change visible.

Add what happens next. Revisit earlier decisions, notice what’s different and think through your next step.

A memory that develops with you

Reflection

Talk it through
with Synthius.

Talk through a decision with your history in view. Explore a recurring pattern, revisit what mattered then and decide what you want to change now.

A conversation you can return to

Understand a pattern

“What keeps coming up when I change jobs?”

See what has changed

“What’s different from the last time I felt this way?”

Questions you could bring to Synthius

Personal assistance

An assistant
that acts for you.

Ask Synthius to handle email, tasks and meetings on your behalf, with your memories and preferences in mind.

Connect the services you use. Choose what Synthius can access and do.

Email & messaging

Read email, draft replies and send messages. Talk to Synthius directly in Telegram.

Gmail · Telegram · Slack

Meetings & planning

Arrange calls, manage your calendar and update tasks. Find meeting notes and follow up.

Google Calendar · Calendly · Zoom
Notion · Trello · Granola · Fathom

Routines & work

Research the web, publish posts and make calls. Create documents, update spreadsheets and schedule recurring work.

LinkedIn · Web tools · Vapi
Google Drive · Google Docs · Google Sheets

Explore Synthius

Digital copies of
historical figures.

Explore their memories and personality, open their reports and talk with them. Each copy is built from documented accounts of a real life.

Carl Jung

A Swiss psychiatrist who founded analytical psychology and explored the unconscious.

Fyodor Dostoevsky

A Russian novelist whose work explores faith, morality and the depths of human nature.

Winston Churchill

A British prime minister who led the country during the Second World War.

Carl Sagan

An American astronomer and science communicator who brought the cosmos to a wide audience.

AI reconstructions from documented sources. Available inside Synthius.

Memory, evidence & control

Personal memory.
Under your control.

Memory research informs how Synthius connects your experiences and personality. Open the evidence in Explorer and correct what needs changing.

Your cloud memory is encrypted. Choose what a compatible AI assistant may read or update, and revoke its access at any time.

Local sources mode uses Dendrite , our open-source desktop companion, to store and manage source files on your device.

Security Why memory needs a life in context