Now on the App Store

Bring a true Apple Pencil experience to ZoteroBring a true stylus experience to Zotero

Rectoly for Zotero is an independent reader for iPad, iPhone, Android, Mac, Windows and Linux. It opens your Zotero library, lets you highlight and write with Apple Pencil, and sends every annotation back to Zotero.Rectoly for Zotero is an independent reader for iPad, iPhone, Android, Mac, Windows and Linux. It opens your Zotero library, lets you highlight and write with a stylus, and sends every annotation back to Zotero.

Free for 14 days · then $19.99, once · Mac: macOS 14.0 or later, Apple silicon · Android: Android 9 or later, 64-bit

Rectoly for Zotero — a paper in Reading Mode on iPad, beside its source page, highlighted and annotated with Apple Pencil
Rectoly on an Android tablet: a PDF opens in Reading Mode, gets a highlight and an underline, then sits beside its source page with a figure pinned

Respect the desktop. Upgrade the iPad.Respect the desktop. Upgrade the Android tablet.

Zotero is already the library. Rectoly is the reader — built so handwriting, highlights, and split view feel native, then sync straight back to the collection you maintain on your computer.Zotero is already the library. Rectoly is the reader — built so handwriting, highlights, and split view feel native on Android, then sync straight back to the collection you maintain on your computer.

A pro tool for an open library

Keep the Zotero workflow. Add the iPad experience it has been missing.Keep the Zotero workflow. Add the Android experience it has been missing.

Reading Mode

Two-column papers reflow into one clean column, and you work in that column: highlight, underline and write with Apple Pencil on it, pinch to zoom, and use the whole screen in landscape.Two-column papers reflow into one clean column, and you work in that column: highlight, underline and write with a stylus on it, pinch to zoom, and use the whole screen in landscape.

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Native Zotero sync

Talks to your Zotero library the way the desktop app does. Collections, attachments, and notes stay in one workflow.

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True Apple PencilA real stylus

Handwriting and highlights that keep up with you — with palm rejection and precise ink, the way iPad should feel.Handwriting and highlights with your stylus, placed exactly where you mean them — on Android tablets and E Ink devices.

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Read beside the figure

Pin a figure beside the text and keep reading instead of scrolling back to it. Or split the reader: Reading Mode on one side, the original page on the other.

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Your notes stay yours

Handwriting on the PDF syncs to Zotero as real ink annotations, so it is there on the desktop too. It is also backed up to iCloud with a restorable version history and exports as JSON.

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20 Languages

Localized for researchers worldwide. Available in English, Japanese, Chinese, Spanish, German, French, and 14 more languages.

New — translation that runs on your device

Every paper, in the language you read in.

Rectoly translates a paper into the language you read in, and the model that does the translating runs on your own machine. Download it once and translation keeps working with the network switched off — a paper under review, a draft nobody has seen, never leaves the device. And a tablet too small to run the model can hand the work to your computer and get the translation back.

English into 19 languagesRuns on the deviceWorks offlineThe paper never leavesOriginal ⇄ translationTranslated ahead of youYour computer can do the workIncluded in the purchase

See how translation works

A paragraph in Reading Mode with its translation below it
A PDF page switched from the original to the translation

See it in action

Your library, your annotations, and two pages side by side, in three short recordings.Three short recordings from an Android tablet.

Your Zotero library on iPad
A paper library on an Android tablet, browsed by collection

Your Zotero library, on iPadYour Zotero library, on Android

Browse collections and papers the way you already organize them on the desktop.

Highlights and underlines on a paper in Reading Mode
A highlight and an underline made in Reading Mode on an Android tablet

Highlight, note, write

Highlights, sticky notes, and Apple Pencil ink — with translucent highlights you can read through.Highlights, underlines and sticky notes, and handwriting with a stylus.

Reading Mode beside the original PDF page
Reading Mode beside the original PDF page on an Android tablet

Compare without the shuffle

Two pages or two papers, side by side, without switching tabs.

The reader, paid once

Zotero stays free. Rectoly is the paid reader on top of it: one payment, nothing to renew.

$ 19.99
One-time purchase · No subscription
Try every feature free for 14 days.
  • Native Zotero library sync
  • Full PDF reading & annotation
  • Apple Pencil that feels nativeStylus handwriting
  • Split view for comparing papers
  • Dark mode for late-night reading
  • Works offline once synced
  • On-device AI translation of the paper
Download on the App Store Download for Windows Download for Mac Download for Linux Download for Android

Questions about Rectoly for Zotero

Rectoly for Zotero is an independent reader for iPad, iPhone, Android, Mac, Windows and Linux. It opens the papers in your Zotero library, lets you highlight, annotate and write on them with Apple Pencil, and sends every annotation back to Zotero.

Is Rectoly an official Zotero app?
No. Rectoly is made by an independent developer and is not affiliated with or endorsed by Zotero. It signs in to your own Zotero account through the official Zotero API, and Zotero stays the home of your library. Zotero’s own iPad app keeps working alongside it.
Can I use Apple Pencil on Zotero PDFs?
Yes. Write on the PDF page or inside Reading Mode with palm rejection, a highlighter pen and an eraser. Double-tap and squeeze follow your iPad’s Apple Pencil settings. Handwriting is saved to Zotero as ink annotations, so it appears in the Zotero desktop reader too.
Do annotations made in Rectoly sync back to Zotero?
Yes. Highlights, underlines, notes and handwriting are written to Zotero as Zotero annotations and show up in Zotero on your computer after the next sync. Highlights made in Zotero on the desktop appear in Rectoly. Group libraries are supported.
What is Reading Mode?
Reading Mode reflows a two-column paper into one clean column that fits an iPad or iPhone screen, with the original PDF one tap away. You can highlight, add notes and write with Apple Pencil inside the reflowed text, and the annotations still belong to the paper in Zotero.
Does Rectoly work with ZotFile or ZotMoov linked files, or with WebDAV?
Linked files: yes. If the folder that ZotFile or ZotMoov moved your PDFs into is synced on the device (Dropbox, Google Drive, OneDrive), Rectoly opens them from there and sends the annotations to Zotero. File syncing through your own WebDAV server (Nextcloud, Jianguoyun and others) works on iPad, iPhone, Windows and Mac.
How much does Rectoly for Zotero cost? Is it a subscription?
The download is free, and every feature is free for 14 days. After that it is a one-time purchase of $19.99 with no subscription. One purchase covers iPad, iPhone, Android, Mac, Windows and Linux. Zotero itself stays free.
Can I read offline?
Yes. Downloaded PDFs and your annotations are stored on the device, so you can read and annotate on a plane or in the field. Changes are sent to Zotero the next time you are online.

What's next

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Also on Android phones, tablets and E Ink devices

Read with the same library and the same annotations. The app downloads from this site, and one purchase covers it together with iPad, Windows, Mac and Linux.