In the world of e-readers, the battle has long been a two-horse race: Amazon’s Kindle versus Rakuten’s Kobo. For years, Kindle has been the undisputed king, dominating the market with its brand recognition and vast Amazon ecosystem. But a shift is happening. A growing cohort of discerning readers is choosing Kobo, and the reason often boils down to a single, crucial word: EPUB.

While both devices excel at their primary job—providing a fantastic, paper-like reading experience—their philosophies are fundamentally different. This article breaks down the key differences and explains why Kobo’s embrace of the open EPUB standard is a game-changer for many users. Let’s get into why more readers are choosing Kobo over Kindle.