How personalisation works

What you write — and what we receive

When you complete a journal entry, that text is processed to generate your next prompt. The content of your entries is not permanently stored on our servers as readable text — it becomes an abstract emotional profile that describes patterns, not words. No one at Aletheia reads your entries.

The emotional profile

Over the course of your 30-day process, the system builds an emotional profile: a description of your recurring themes, the rhythm of your process, and the areas that seem most alive for you. This profile lives in our database linked to your account — you can always export or delete it from Privacy & data. It does not contain your exact words. It is an interpretation, not a transcript.

How prompts are generated

Each journal prompt is generated by combining: (1) the 30-day narrative arc designed for your journal, (2) your current emotional profile, and (3) the day's context. The result is a prompt that, over time, feels more attuned to you — not because the system has analysed you, but because it has learned what kinds of questions move you.

The reflective Companion

The Companion is an open dialogue space within your journal. The conversations you have with it are not stored in full on any server. When you close the session, a brief summary — one or two sentences — is generated and incorporated into your emotional profile for continuity. The Companion has no memory between sessions beyond that summary. It is not an agent with access to your full history.

What we never do

• Share your data with advertisers or commercial third parties.
• Use your emotional content to train AI models.
• Sell your emotional profile or any derivative of it.
• Make inferences about your mental health beyond what you choose to write.
• Send you advertising based on your emotional state.

Your controls

From Privacy & data you can: disable personalisation (you'll receive generic prompts from the narrative arc), disable the Companion, export your full emotional profile as JSON, or request complete deletion of your account and all its data.