Rectoly doesn't replace your reference manager. It opens the papers you've collected in Mendeley or Zotero, and sends the annotations you make back to that library.
Sign in with your Mendeley or Zotero account and your collections, papers and attachments appear as they are.
The “Across papers” tab lists the annotations of every paper in one place, and searches full text, handwriting and notes together. Free on iPad and iPhone.
Highlights and notes sync to Mendeley or Zotero as ordinary annotations. Open the paper on your lab computer and they're there.
Downloaded papers read fine without a connection. And without signing in at all, you can open PDFs that are already on the device.
No moving files, no emailing yourself. Open the library and the same papers are there.
The Zotero edition opens papers in group libraries too.
Downloaded papers and their annotations are stored on the device.
Download it free from the App Store and try everything. If it earns a place in your day, buy it once. No subscription.