Document with multiple comments

.NET for iOS & Android Comments View and Respond to Comments Directly in Documents

Easily start and participate in conversations with PSPDFKit’s proprietary real-time comment collaboration, or choose PDF-native comments and replies for improved asynchronous collaboration.

How It Works

Comments and Reviews

In addition to a comment timeline, each reply has a review state to help decision-making processes.

Get a feel for what’s possible with our demo.

Which One Is for You?

PSPDFKit for .NET for iOS & Android provides support tailored for different use cases: real-time commenting for server-backed applications, and conventional annotation-based comments and replies for standalone apps.

Explore All Features

A Nice Little Chat


View and add comments to a discussion in a document with a vibrant, modern user interface. Now everyone can have their say using their phone or tablet, wherever they are.


The Replies component provides all standard note type icons and colors, which can be set from the style menu.

Review States

Users can leave review states on any comment — for example, to say whether they agree or disagree with a proposed change.

Real-Time Synchronization

Initiate real-time comment discussions when collaborating on documents with multiple reviewers.

Documentation Learn how to easily get Replies up and running in your project.

Ready to Get Started?

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