Markdown writing.
Your storage.
A native iPhone & iPad writing app in the spirit of Ulysses — without the subscription, and without anyone else holding your words.
Read the setup guide Storage options Coming to the App Store
Plain text that reads beautifully
Everything you write is pure markdown — styled live in a bookish serif, with your headings, emphasis, and quotes visible as you type. Nothing proprietary underneath.
Three-pane library
Groups, sheets, editor — the layout writers know. Projects, nested folders, keywords, favorites, and full-text search keep long work organized.
Real code highlighting
Fenced code blocks get true Tree-sitter syntax highlighting in ~28 languages. Prose in serif, code in mono — in the same sheet.
Version history
Every meaningful save is a version you can preview and restore. Rapid saves coalesce so history stays readable.
Writing goals
Ulysses-style word and character targets on any sheet or group, with progress rings and deadlines.
Export anywhere
DOCX, HTML, and markdown export. Split and merge sheets at headings. Typewriter mode, focus mode, custom themes.
Offline-first
Everything saves on-device instantly. Sync reconciles in the background — no network, no problem.
The only writing app that asks where you want your words
On first launch, Odyssey asks where your library should live — and walks you through connecting it. Switch any time; your library migrates with one tap.
| On this device | Total privacy. No account, no server, no setup. |
| iCloud | Private sync between your Apple devices. |
| Sync API | Self-hosted server (FastAPI + Postgres, MIT-licensed) with token auth. |
| PostgreSQL | Direct connection to your own database. Tables auto-created. |
| MySQL / MariaDB | Same, for the MySQL family. |
| DynamoDB | Serverless AWS table you own. Pennies a month. |