Curated experience for iPhone Duo

Books at your fingertips

A foldable phone held open like a book, displaying Folio’s two-page reader and a curling paper page.

Unfold to explore

Thousands of books. One fold away.

Browse free classics across the full screen. Fold it shut, and the cover stays with you.

Explore screen with free classic books on the unfolded iPhone Duo
Frankenstein cover on the folded iPhone Duo

How it works

PDF to book in three steps.

  1. Step 1

    Share a PDF to Folio

    From Safari, Files, or Mail, tap Share, then Folio.

  2. Step 2

    Find it on your shelf

    It lands in your library, ready to open.

  3. Step 3

    Unfold and read

    A two-page spread with real page turns.

Thoughtful details

Everything you need. Nothing you don’t.

Free. Private. Yours.

No account, no ads, no tracking.