Kindle vs Kobo vs Onyx Boox in 2026: Which E-Reader Should You Choose (and How to Use Them Together)
For over a decade, saying "e-reader" basically meant saying "Kindle". When I released my first app in 2020, 95% of my users had an Amazon device. Today, if you look into the backpacks of avid readers, students, or manga fans, the landscape is completely different: Rakuten Kobo, Onyx Boox, PocketBook, and digital paper tablets like reMarkable are everywhere.
The real problem isn't the screen—it's the ecosystem lock-in
Here is the funny thing from a hardware perspective: almost all modern e-readers use the exact same E-Ink panels (like E-Ink Carta 1200/1300 or Kaleido 3 for color). What really changes is the software—and how hard each brand tries to lock you inside its own walled garden.
Amazon Kindle (Paperwhite, Colorsoft, Scribe)
Fantastic hardware, super snappy page turns, and unbeatable warm front-lighting. The downside? Sending personal files via email still requires managing approved sender addresses, and Amazon converts your EPUBs into its proprietary format behind the scenes.
Rakuten Kobo (Clara BW/Colour, Libra Colour, Sage)
Beloved by people who want an open library. Kobo reads native EPUB, PDF, and CBZ comic archives out of the box, and its UI is clean and book-focused (without home screen store ads). However, wirelessly beaming files from an iPhone without Dropbox/Google Drive on entry-level models can be tricky.
Onyx Boox, PocketBook & reMarkable
Onyx Boox runs full Android on E-Ink, making it a beast for technical PDFs and manga. PocketBook is a European gem with physical buttons and wide format support, while reMarkable is the king of distraction-free note-taking and university papers.
Why I built a bridge that doesn't care what brand you buy
Many of my users started writing to me: "Lucio, I bought a Kobo Libra for myself and gave my old Kindle to my partner—or I use a Kindle at night and a Boox for PDFs. How do I send the same article or book to both without doing everything twice?"
That question is the heart of Send to Reader. Instead of relying on brand-specific email servers, I realized every single modern e-reader shares one universal feature: a built-in web browser.
How multi-reader wireless delivery works in practice
When you link your devices on sr.luciosoft.it using a simple 6-digit code, Send to Reader knows which models you own. When you share a web article, a PDF, or a 200 MB manga from your phone:
1. You upload the file only once from your phone.
2. Our cloud prepares the optimal format for each of your connected readers.
3. The file stays waiting for up to 7 days until every single one of your linked devices has downloaded it.
Buy the screen and ergonomics you fall in love with—whether that's the waterproof symmetry of a Kindle Paperwhite, the physical page-turn buttons of a Kobo Libra, or the 10-inch canvas of an Onyx Boox. With Send to Reader in your pocket, your personal library, web articles, PDFs, and manga will follow you effortlessly to any screen.