Duet

Duet is open-source, reading-first firmware for the Xteink X3 and X4. It adds two-device sync, deep reading analytics, configurable dashboards, cover libraries, smart search, custom fonts, and dictionaries while preserving the fast CrossPoint/CrossInk reader foundation.

Duet is created and maintained by Lauren Landau as an independent, one-person project, with upstream work credited throughout the documentation.

View the official Duet repository

Start Here

• Start Here
• Installation
• User Guide
• Alpha Testing
• Troubleshooting
• Alpha.7 Acceptance Quickstart

Features And Daily Use

• Complete Feature Tour
• Alpha.7 Screenshot Gallery
• Complete Reading Stats Gallery
• Fonts
• Dictionary Setup
• Reader Features
• File Formats
• Nearby Position Sync
• Nearby Reading Stats Sync
• EPUB Render Modes
• Controls
• Data Cache
• Web Server Guide

Library And Media

• Desktop Cover Prefill
• Release Notes

Testing, Development, And Community

• Physical Test Matrix
• Issue Triage
• Simulator
• Maintainer Release Runbook