CrossPoint Sync is a wireless companion app for the XTEink X4 e-ink reader. Transfer books, manage your device library, and clip web articles — all over your local WiFi network, no cables required.

WIRELESS FILE TRANSFER
Send EPUBs to your e-ink reader over WiFi. Uploads are chunked and streamed over for reliable, fast transfers.

DEVICE FILE BROWSER
Browse the full file system on your e-ink reader directly from your Android. Navigate folders, create new folders, delete, rename, move files, and download books back to your phone. Swipe actions make file management quick and intuitive.

WEB CLIPPER
Save any web article for your e-ink reader by sharing to CrossPoint Sync. It extracts the article text, downloads images, and converts everything into a clean EPUB that's ready to read on your device. Clips sync automatically the next time you open the app.

UPLOAD QUEUE
Queue multiple books for transfer and watch them upload one by one with real-time progress tracking. The queue persists across app launches — add books now and they'll transfer automatically when your device connects later.

SHARE EPUB
Share EPUBs from any app — Files, email — directly into CrossPoint Sync's upload queue. Files are picked up automatically and transferred to your device.

SLEEP BACKGROUND CUSTOMIZATION
Set a custom sleep screen image on your e-ink reader. Pick any photo from your library, preview it, and upload it to your device as the sleep background.

ADDITIONAL FEATURES
• Configurable upload paths for books and clipped articles
• Dark mode support
• Swipe-to-delete and swipe-to-save file actions
• Breadcrumb navigation with swipe-back gesture
• Device info display: hostname, IP, firmware version