KOReaderSync

Piero Antonio Zecca

About this app

KOReaderSync gets your ebooks from your phone to your Kindle, wirelessly.

It transfers and synchronizes ebooks (and screensaver images) from your Android phone to a Kindle running KOReader, over Wi-Fi (SFTP). No cable, no cloud — everything stays on your local network.

KEY FEATURES
• Library sync: compares your phone's ebook folder with the Kindle's and uploads what's missing. Optional two-way mode (also downloads books that are only on the Kindle).
• Quick send: send individual files, or use "Share → KOReaderSync" from any app.
• Network scanner: finds your Kindle automatically (SSH port) — no need to hunt for the IP address.
• Custom screensavers: upload your own images to the Kindle's screensaver folder.
• Formats: EPUB, PDF, CBZ/CBR, MOBI, FB2, DjVu, TXT and more (handled by KOReader).
• Modern Material Design UI, light/dark theme.
• Multilingual: English, Italian, Spanish, French, German.
• Built-in guide.

HOW IT WORKS
On KOReader (on the Kindle) start the built-in SSH server (Menu → Tools → SSH Server) and connect to Wi-Fi. In the app, tap "Scan network" or enter the IP, then sync. Books are stored in /mnt/us/Books on the Kindle.

REQUIREMENTS
• A jailbroken Kindle running KOReader, with the SSH server enabled.
• Phone and Kindle on the same Wi-Fi network.
Note: this app does NOT jailbreak your Kindle and won't do it for you — you need a Kindle already set up with KOReader.

PRIVACY
No data collected. No ads, no tracking, no accounts. Your settings stay only on your phone; files go directly to your Kindle on the local network, never to external servers

What’s new

• Sync your ebook library between your phone and a KOReader Kindle over Wi-Fi (SFTP)
• Send single files, or use "Share → KOReaderSync" from any app
• Find your Kindle automatically with the built-in network scanner
• Upload custom screensavers
• Built-in guide, Material Design UI, light/dark theme
• Available in English, Italian, Spanish, French, German