There is a dearth of dual-screen e-readers available to purchase in 2025. The only upcoming model is the Mooink V, but it doesn’t have a firm release date yet. However, another will be hitting crowdfunding soon: the Diptyx eReader. This is a Linux-based device developed by a single guy; it has no DRM or cloud storage, and it opens and closes like a real book.
The Diptyx runs two E INK screens on a hinge, each 5.83 inches on a side, with a resolution of 640 x 480 and 137 PPI. There is no front-lit display or color temperature system. It runs an ESP32-S3-N16R8 processor, 512MB of RAM, and 2GB of storage on an SD card. WIFI is the only thing about this device; it doesn’t have Bluetooth, speakers, or even a headphone jack. Each screen is powered by a 1,500 mAh battery.
Diptyx runs on custom, open-source firmware designed specifically for reading eBooks. Simply upload your digital books as EPUB files through the USB-C connector, and start reading. It features no DRM, allowing you to read books from any digital bookstore as long as they are in EPUB format. No internet connection, accounts, or cloud services are required.
The Diptyx firmware lets you personalize your reading experience: upload custom fonts, adjust margins, and set line spacing, all through the built-in settings menu. In addition, users are free to modify the source code itself: add Wi-Fi functionality such as an RSS reader, create unique custom games, or make an offline Wikipedia backup; the limit is your own imagination.
You can visit their Crowd Supply page to see when the project goes live.
Michael Kozlowski has written about audiobooks, e-books and e-readers for the past eighteen years. He Lives in Vancouver, British Columbia, Canada.
