Writing that's kin to yours. Writekin ingests your own writing — Mail, Messages, documents, chat exports — curates it into a training corpus, fine-tunes a local language model (QLoRA on Apple Silicon via MLX), and then drafts and rewrites text that sounds like you. Everything happens on your Mac.
Overview — your corpus at a glance.
Compose — draft and rewrite in your voice.
Train — a local QLoRA run with a live loss chart.
Models — the on-device model library.
- Nothing leaves your machine. Ingestion, training, and generation are all local. There is no telemetry, no analytics, and no account.
- The auto-update check (Sparkle) requests one file — the release feed — and sends no system profile. That is the app's only network traffic besides model/tool downloads you explicitly start.
- Model weights download from Hugging Face on demand; the optional Messages-support tool downloads from its own official GitHub release, checksum-verified. Both happen only when you click.
- This repository exists so you don't have to take any of the above on faith: the source is the proof.
- Apple Silicon Mac (M-series). 16 GB unified memory minimum; 32 GB+ recommended for training larger models.
- macOS 14 or newer.
- Full Disk Access (user-granted) if you want Mail and Messages ingested.
Download the latest DMG from Releases, drag to Applications, open. The app guides you through source detection, Full Disk Access, and model download on first launch.
Messages support uses the open-source
imessage-exporter
(GPL-3.0), which Writekin downloads on demand — or use an existing
brew install imessage-exporter.
brew install xcodegen
xcodegen generate
open Writekin.xcodeproj # build the Writekin schemeThe full test suite (xcodebuild test -scheme Writekin) must pass
before submitting changes — see CONTRIBUTING.md (note the contribution
licensing terms there).
New to the codebase? Start with ARCHITECTURE.md — the pipeline, the
folder map, and the invariants that keep it honest.
Writekin is source-available, free for personal (noncommercial)
use under the PolyForm Noncommercial 1.0.0 license.
Commercial use requires a separate license — see NOTICE.md for
contact. Third-party components are listed in
THIRD_PARTY_LICENSES.md.