Open a PDF file, select the markup tools from the toolbar, and start drawing or adding notes directly on the document.

Yes, use your pen or stylus on the toolbar to freely sketch or write annotations on your PDFs for a natural pen-and-paper experience.

It allows marking up, editing, signing PDFs, adding signatures, and organizing documents easily, suitable for professional workflows.

Go to the Document Builder feature, then select merge or reorder PDFs from the menu to combine your documents seamlessly.

Use the Measurement tools in Pro to calibrate your document scale and add linear or area measurements directly on the PDF.

Pro offers advanced tools like Store+Share, Measurement, Document Builder, and Hyperlinks to enhance your productivity and collaboration.

Open the app, go to Settings > Account > Subscriptions, and choose the Pro plan to activate the advanced features.

Ensure the app is updated, check your internet connection, or restart the app; if problem persists, contact support via Settings > Help & Feedback.

Yes, as long as you sign into the same Microsoft account and enable cloud syncing, annotations are available across devices.

The Pro subscription typically offers a free trial; check within the app under Settings > Account > Try Pro to access trial options.