For users whose main needs are reading and writing, an E Ink tablet may be a better fit than an iPad.

Engadget reports that E Ink display technology differs noticeably from conventional tablets in daily use, mainly in eye comfort, outdoor visibility and battery life.

In terms of use cases, E Ink tablets are better suited to content that changes little on screen, such as books, documents and notes. Rather than emitting its own light, the display reflects ambient light to render content. Engadget therefore argues that an E Ink screen can help reduce visual fatigue to a certain degree, and its paper-like look is another key advantage.

The difference is even more obvious outdoors. Because it relies on ambient light, an E Ink screen is usually easier to read in sunlight, whereas the visibility of some iPad models suffers in direct strong light. Engadget notes, however, that the iPad Pro with its high-brightness tandem OLED display has offset this shortcoming to some extent.

In terms of product design, E Ink tablets also typically feature matte screens and lighter bodies. Most use a matte display layer rather than glossy glass to deliver a writing feel closer to paper, so both finger interaction and stylus input differ from a conventional tablet. At the same time, an E Ink screen needs almost no continuous power when displaying static content, drawing noticeably more power only when turning pages or refreshing content, so battery life tends to beat the iPad. According to the report, products such as the reMarkable Paper Pro can run longer than an iPad.

Even so, E Ink tablets are still far from fully replacing the iPad. Color performance remains one of their most typical weak points. Although color E Ink panels are already available, they still struggle to match the iPad's color gamut coverage and clarity. Engadget points out that for comics, images and web content, the iPad still offers better image quality and color accuracy.

The gap in response speed and overall performance is equally clear. When the image changes, an E Ink screen updates by moving particles, so it handles dynamic content poorly and is practically incapable of video playback; menu swiping and app switching are also usually less smooth than on the latest iPad. On top of that, screen flicker and ghosting can still occur.

Hardware specifications further limit the boundaries of these products. Many E Ink tablets are not designed for demanding graphics applications or complex animation and usually carry relatively modest processors; combined with slower refresh rates, the gap with the iPad becomes even more apparent when loading complex web pages. Engadget notes that when a heavy web page loads slowly, users may even pick up their phone instead.

Overall, E Ink tablets are better suited to static tasks such as reading, drawing and writing. If users care more about watching videos or browsing the web, or have higher requirements for color rendering, an iPad or Android tablet remains the better choice. Despite clear limitations, E Ink tablets are gradually becoming a viable alternative in text-centric use cases.