Made for iPhone Duo

Notes that connect over time

The notebook that folds up like the real thing. Plan your week, save a recipe, map a trip or sketch out an idea, all in one place, on the phone that's already in your pocket.

Papertrail app iconComing soon to the App Store

An opened iPhone Duo showing a two-page spread with hand-drawn sketches The front screen of a folded iPhone Duo showing a yellow notebook cover with wave lines, and the camera on the printed dot

One notebook, every kind of page

Whatever you're working on, there's paper for it

Pick a paper and a page color, then write by hand, type, or do both on the same page. Search finds it all later.

Fast by design

Start in seconds

Good ideas show up at the worst times, so the notebook has to be quicker than the thought.

Why it exists

A notebook that's actually a notebook

iPhone Duo folds up like a pocket notebook and opens into a two-page spread, so I wanted an app that felt like one. I'm a content creator, so it started with storyboards. It quickly became where everything else went too: plans, lists, recipes, and notes to my future self.

Roger Seng

Opened

Open it, and it's a desk

Unfold your iPhone Duo and your notebook spreads across two facing pages, with everything on the shelf a tap away.

An opened iPhone Duo showing My Notebooks, a shelf of colorful notebook covers

Try it

Go on, open it

Tap the cover and draw on the page with your finger, mouse or stylus. Use the page button to change the paper. Nothing here is saved.

Everything a good notebook does

  • Paper for every job

    Planner, Journal, Project, Trip, Recipe, Reading Log and Storyboard. Most come in a version to write on and one to type on, and every page can have its own.

  • Starters and Surprise Me

    Start from a ready-made notebook, or let the dice pick a cover, name and paper. Press and hold a paper to keep it while everything else changes.

  • Ink stays ink

    Write with Apple Pencil and it saves as handwriting. Nothing gets converted unless you ask.

  • Search your handwriting

    Find what you typed or wrote by hand across every notebook. Handwriting is read right on your phone.

  • Share as a file

    Send a page as a JPG or PDF, or a whole notebook as a PDF.

  • The page carousel

    Pinch partway to fly through every page. Add one, hold and drag to reorder, or swipe up to share, bookmark, duplicate or delete.

  • Taped-in photos

    Tap a photo to move, resize or rotate it, and layer it above or below the others.

  • Highlight behind the words

    Marker sits under your text, so nothing you wrote gets covered.

  • Text anywhere

    Add plain text with one tap, drag it anywhere on the page and turn it to any angle.

  • Type, Draw or Select

    Every notebook opens with no tool in your hand, so pages just turn. Double tap to start typing, or pick a tool and its options appear beside the page.

  • A real page turn

    Pages curl under your finger, with paper on the back. Pinch or swipe past a cover to close the notebook.

  • Pages that grow

    Start with one page and add more whenever you like. The back cover has a button for a new one.

  • Bundles

    Keep related notebooks together, and arrange them your way.

  • Bookmarks

    Mark a page and jump straight back to it.

  • Undo and Redo

    Step back and forward through text, ink, photos and boxes while you work.

  • Nudges

    Type @nudge tomorrow at 5pm on any line and get a reminder.

  • Backups you control

    Back up on a schedule to a folder you choose in iCloud Drive.

  • Patina

    Covers scuff and fade and pages yellow as a notebook gets used.

A storyboard page with a watercolor sky, and a row of watercolor swatches above the drawing tools

Nothing is final

Plans change. Most apps turn a pen stroke into something you can only erase, but Papertrail keeps every line editable. In Select, tap a line, or hold and drag to circle several, then change their color and thickness, drag them somewhere better, or pinch to resize.

Tap a photo to move, resize or rotate it, and send it forward or back when you're layering a page. Undo and Redo cover all of it.

Only on iPhone Duo

Designed around the fold

A sealed page, folded like an envelope with a red wax seal

Seal what's private

Some things are just for you. Seal a single page or a whole notebook. A sealed page folds shut like an envelope, stamped in wax with your own initials, and opens only with Touch ID or your passcode.

It closes again when you leave the app. Search skips what's inside, and reminders from a sealed page stay vague on your lock screen.

Papertrail Plus

Papertrail is free. Plus is $2.99 a month or $24.99 a year, and every new subscriber gets the first 14 days free.

Free forever

  • Unlimited notebooks and bundles
  • Pen, marker, text and Apple Pencil
  • Every paper, including Storyboard
  • Photos and text anywhere
  • Search, seals, nudges and bookmarks
  • Backups and page saving
  • Starters and Surprise Me

Plus adds

  • Custom cover colors, materials and patterns, including emoji
  • Any page color you like
  • Your own photos as covers and page art
  • Watercolors, in any color you like
  • Coming to Plus: sync across devices and version history

Your notes stay yours

There are no ads and no tracking, and Papertrail doesn't send your notebooks to any server of ours. They live on your phone, plus any backup you choose to make. Read the Privacy Policy.