Now on Android

Rectoly on Android, straight from this site

Phones, tablets and E Ink devices such as Boox. The app does not go through an app store — it downloads from here, and installing takes a minute.

Rectoly for Mendeley Rectoly for Zotero

Free for 14 days. One purchase then covers your phone, tablet, computer and iPad.

Rectoly for Mendeley · Available now
Rectoly for Zotero · Available now

Reading on Android

Recorded on an Android tablet. The same app runs on phones and E Ink devices.

Reading Mode

Two-column PDFs reflowed into one column at your width.

Highlight and underline

Select, then mark. Every annotation stays anchored to the original page.

Reading Mode beside the original PDF page on an Android tablet

Beside the original page

The reflowed text and the PDF page, side by side, with the same marks on both.

Install

From the .apk to the first screen

Android does not install a file from a website on its own — it asks first. This is the whole sequence.

On Android

The download is the app package itself — an .apk file, well over 100 MB.

Open the .apk from your browser's downloads, or from the Files app.
Android asks whether to allow installs from that app (Install unknown apps). Allow it, go back, and tap Install.
Google Play Protect may then say it blocked the app to protect your device — it says that for any app it has not seen on Google Play. Tap More details, then Install anyway. If instead it offers to scan the app, let it and continue. Then open Rectoly.
It asks you to sign in on Zotero's or Mendeley's own sign-in page, which opens inside the app. Rectoly never shows a password field of its own.

What it runs on

Android 9 or later, 64-bit (arm64) — phones, tablets and E Ink devices such as Boox. HarmonyOS NEXT cannot install Android apps. SHA-256: Rectoly for Mendeley · Rectoly for Zotero

Good to know

If Install anyway does not appear, turn off Scan apps with Play Protect for a moment in the Play Store (your profile › Play Protect › settings), install, and turn it back on.
Updates come from this site, not from a store. Rectoly checks for a new version when it starts and tells you; install the new .apk over the old one, and your library and notes stay.
This copy is for devices without Google Play. If your device has Google Play, prefer the Play version once it is published there — and if you install it later, remove this copy first: the two are signed differently, so neither can update the other.
On an E Ink device such as Boox, turn on E Ink optimisation under Settings › Reader.

The first time you open it

Rectoly reads the library you already have. There is nothing to import and nothing to move.

With the same Mendeley or Zotero account you use everywhere else

Your papers arrive

The library syncs both ways, and synced papers stay readable offline

14 days free

Then one purchase, which also unlocks your tablet and phone

Rectoly on Android, straight from this site