Graphophone — fact sheet
=========================

What it is
  A private, local-first AI journal. Reflection, summaries, and
  ask-your-journal Q&A run on a model that ships with the app and
  on the user's device. Nothing about an entry leaves the device
  by default.

Platforms
  iOS and Android first; macOS, Windows and Linux build from the
  same codebase. None is released yet — graphophone.app/download
  carries the current status of each.
  One Flutter codebase, one Rust core (900+ tests).

Encryption
  Argon2id passphrase KDF + XChaCha20-Poly1305 AEAD with HKDF-SHA256
  subkey derivation. Per-entry AAD-bound seal in addition to a
  whole-DB encrypted SQLite vault.

Business model
  Free, with no advertising on any tier; replies read aloud with an
  on-device voice are free too. Graphophone Depth sells capability:
  the Max 4B and Ultra 7B on-device models, hands-free conversation,
  Perspectives, Insights across a year, your own model server, and
  the proactive weekly read. Monthly,
  yearly, or a one-time Lifetime Pass. Prices are store-set.
  Bring-your-own-key cloud is planned, not in this build; when it
  ships it will be opt-in, never the default, and free.

What it is NOT
  Not a SaaS. There is no Graphophone server that touches entries.
  Not an ad-tech company. There is no advertising anywhere in the
  product, and no endpoint that could serve one.
  Not for sale to data brokers. There is no collected data to
  sell: entries are encrypted on the device, and no Graphophone
  server ever receives them.

Founders
  Built by erikglimpse.

Contact
  hello@graphophone.app
  https://graphophone.app

Logos
  Provided as monochrome SVG plus a transparent PNG icon at 512px
  and 1024px. Use either the mark on its own or the wordmark on
  light backgrounds. Do not recolour the accent.
