Helicon

Annotate your EPUBs on iPad.

Helicon reads EPUBs and PDFs. In an EPUB, a pin in the margin holds a whole note, and a snipped figure becomes a pin you can draw on.

Join the beta on TestFlight

Or get the link and news by email.

Free, for iPhone and iPad with iOS 26 or later.

Pins and notes in the margin.

Hold a finger in the margin to drop a pin. Its note takes typing, Apple Pencil ink, a checklist or your voice. Helicon keeps your place in the book when you close it.

Take your notes with you.

Export a book's highlights and notes as Markdown, EPUB and PDF notes under the same headings, ready for your notes app.

What Helicon does today

  • Pins in EPUBs
  • Apple Pencil ink
  • Your place in the book, kept
  • Markdown export
  • EPUB and PDF notes in one export

Read more on the Helicon home page.

Try Helicon on your next book.

Join the beta on TestFlight

Or get the link and news by email.

Free, for iPhone and iPad with iOS 26 or later.

Questions or ideas? Chat with us on Discord.