Folio Writer

Free on iPhone and iPad — and now opens end-to-end encrypted shared projects: your words decrypt on your device. Passcode-protected links prompt right in the app.

Folio Writer is a plain-text writing studio for long-form work — scholarly manuscripts, books, and novels. This is its iPhone and iPad companion: the same projects, the same files, in your pocket.

Open a project from iCloud Drive, Dropbox, or any Files location and pick up exactly where you left off on the Mac. Everything you write is a plain Markdown or Typst file you own, synced through your own cloud — no accounts, no lock-in.

WRITE ANYWHERE

• A Markdown key bar puts #, *, links, code, and $math$ one tap away — no hunting through the keyboard.
• Typewriter scrolling and sentence focus for drafting on the go.
• Live word count and writing targets for each document, the whole draft, and each session.
• Hardware-keyboard shortcuts on iPad.

YOUR WHOLE PROJECT

• The full binder: browse, open, rename, reorder by dragging, indent and outdent, and create new documents from templates.
• Snapshots you can take, browse, compare, and restore — nothing you write is quietly lost.
• Project-wide search across every document, title, synopsis, and note.

CITATIONS & PREVIEW

• Insert citations from the project's BibTeX files by author, year, or key.
• Preview the rendered document — headings, tables, images, and LaTeX math typeset with KaTeX — right on the device.
• Preview a single section or assemble the whole manuscript.

MADE TO SYNC WITH THE MAC

• Opens the exact same .folio projects as Folio Writer for Mac, byte-for-byte.
• Automatic, conflict-safe syncing: edits made on two devices merge when they don't overlap, and a losing copy is always preserved and recoverable.
• Compiling to PDF and Word stays on the Mac (those tools are desktop-only) — but your writing is always in sync.

PRIVATE BY DESIGN

• No analytics, no trackers, no accounts. Your manuscripts never leave your own devices except through the cloud service you choose.

Folio Writer for Mac is required to compile finished documents. The companion is for writing, organizing, and reviewing your projects wherever you are.