When you picture a tablet, chances are that something like the iPad comes to mind: a bright, colorful screen, pages of apps, social media, games, and video all at your fingertips. But if you’re the kind of user that needs to buckle down and get work done, or are looking for a reading tablet experience that’s easier on the eyes, the Boox Note Air 4C might be for you. Featuring a color e-ink screen, paper-like writing experience, and Android 13 for Google Play Store access and app compatibility, it’s one of the most fully featured, minimal distraction devices I’ve tested. Its oodles of apps put it in a different class than many of its competitors, like the Remarkable Paper Pro, basically making it the e-ink equivalent of a Galaxy Tab with a few extra features for writers, readers, and artists.
Boox Note Air 4C – Design and Features
The Boox Note Air 4C is a multifaceted device, at once a digital notebook, sketchpad, typewriter, Android tablet, and e-reader. It uses a 10.3-inch e-ink screen, which is the company’s current niche in the tablet market, and is one of its latest releases to feature a full color display. It’s designed to minimize, if not obliterate, distractions, making it a compelling choice for students, teachers, and mainstream users that enjoy the e-ink experience and the reduced eye strain and paper-like reader experience it can offer.
The Note Air 4C uses a Kaleido 3 display, which is the most recent release from E Ink, the company behind ePaper displays. This allows the 4C to display a full range of hues while still maintaining its parchment-like reading experience. It has natural benefits for reading PDFs with graphics and browsing the web, rendering color for a more accurate and engaging reading experience, and because the Note Air uses Android 13 for its operating system, it also makes using apps feel clean.
In short, it effectively brings together a normal tablet experience with the ePaper format… with one key exception: video.
As the technology stands right now, e-ink displays are simply not ideal screens to watch video. They don’t need to refresh like LCDs do. Because the technology works in a fundamentally different way to other types of screens, once the ink is charged and positioned, it can theoretically stay there forever, maintaining the image even after the device is turned off. Boox tablets refresh more frequently and include different modes that control how quickly it refreshes. Even at its fastest, however, watching videos is bad. At best, you’ll make out what’s going on with a perpetual sense of motion blur. On the other hand, it’s fast enough where you can use one of its faster refresh modes and scroll webpages or play a game of Threes easily.
Somewhat counterintuitively (compared to what you would normally look for in an Android tablet), this low refresh rate is one of the qualities that makes it so appealing. It’s just not feasible to use the device for distracting videos, and though you can use it for things like browsing social media, your phone will always provide a superior experience.
It goes without saying that the technology is completely different from other displays. A layer of ink particles below the screen form into text and images through electromagnetism. Above this layer is a color filter and another layer for its EMR stylus. There’s also a tiny degree of separation to accommodate its color-temperature controlled backlight. Compared to a black and white e-ink display, like the Boox Note Max or Viwoods AiPaper, there’s more depth to the screen here, so ink isn’t as immediately pooling under your stylus tip. The image is also darker, which is why that backlight layer is important when many monochrome e-ink tablets leave it out entirely.
The specs are solid for a digital notebook. It’s a bit more compact than much of the competition at 10.3 inches. The Supernote and Viwoods AiPaper each have 10.7-inch screens and the Remarkable Paper Pro is a chonker at 11.6 inches. Its screen measures 8.3 x 6.1 inches, though its full footprint is a bit more square at 8.9 x 7.6 inches. Either way, it’s slim and exceptionally easy to carry, and while it's still heavier than a paper notebook, it weighs in at 420g / 0.93 lbs while sporting both a case (when purchased through Boox) and a pre-applied paper-like screen protector.
Because of the layer-and-filter approach to colorizing its display, the Air 4C has two different resolutions and pixel densities. The black and white resolution is 2480x1860, or 300 pixels-per-inch (PPI), while color is only 1240x930 150 PPI. This was concerning at first, however it doesn’t make a huge difference in real-world use. Since black and white makes up text and, most often, the sharpest details you’ll perceive anyway, the lower density of the color filter wasn’t even that noticeable to me.
Memory and storage – 6GB of memory and 64GB of storage – aren’t the highest but they don’t need to be for a minimalist tablet like this. Since you’ll primarily be storing ebooks, documents, and productivity apps, this should last you quite a while, but it also comes with a microSD card slot to add additional storage.
The processor is a Snapdragon 750G, octa-core, with a top speed of 2.2GHz but frequently runs much slower than that. Despite it being a 5-year-old processor, it gets the job done. Still, for a new, expensive e-ink tablet, I really would have liked to have seen something a bit more modern. It works, but there are times when heavier Android apps can feel a little sluggish (like Office 365) when booting or transitioning screens, and a newer chip would have definitely helped with that.
While its purpose, display, and related specs differ from a normal Android tablet, in other ways it’s right in line with what you would expect. It supports Wi-Fi and Bluetooth 5.1. You can enter the menu system and find most of the same categories and options, which is especially useful if you’re already familiar with the operating system and significantly reduces the learning curve. It also means that you can customize the home page, organize notes and files, and navigate its file system more intuitively than something proprietary. Again, that’s if you already have experience as an Android user. If you’re new to Android, getting used to its layout, features, and menu systems will take some getting used to (but it’s not difficult if you’ve used a tablet or larger smartphone in the past).
It also has access to the full Android ecosystem and has the Play Store installed by default. Obsidian, OneNote, Google Drive, Office 365, ChatGPT… all of these things are readily available and, for the most part, work very well. This allows the Air to be much more versatile than something like the Remarkable Paper Pro, more easily integrated into different workflows, and offer wider support for backup to any service supporting Android.
Boox includes a fairly basic pencil with the tablet and outfits it with a high friction nib. There’s no eraser, which bothered me until I discovered that scribbling over what you don’t want erases every stroke beneath it. There’s a nice scratchiness to writing on the bare screen that makes it feel a bit more like paper (no tablet is a perfect match, in my experience) and improves the accuracy of your strokes. If you do want to change out the stylus, that’s easy to do thanks to the widely adopted Wacom EMR technology standard. There are lots of options out there, including premium options from LAMY, Pilot, and Staedtler, but anything with EMR will do. Because the technology works with magnetism, none of them need to charge either, so they’re always ready to go.
Boox Note Air 4C – Performance
A huge part of the user experience comes down to the software and features that Boox bakes into the device. While this could be broken down within the Design and Features section, it's so critical to using the Air 4C that it makes up a core portion of its performance and my impressions having used it for the last month. Simply put, this tablet offers a ton, from reading to writing to planning, documenting, collaborating, and more.
Before getting to that, though, let's talk about how it actually feels to use physically. Because the tablet is relatively compact and lightweight, it's easy to carry through the day and hold with one hand. The texture on the screen is good and makes for an enjoyable writing experience. However, Boox's newer Note Max is a bit better for writing, in my opinion, due to the reduced layers on the screen making the ink appear minutely closer to the tip than the 4C.
In fact, it's fair to say that the display is probably the Air's biggest selling point and its biggest concession. Because of the additional layers in its design, it's noticeably darker than its monochrome counterparts, especially the Viwoods AIPaper. This can be made up with the backlight, and I have to give Boox credit for allowing you to customize the color temperature from cool white to nearly amber, but I feel like it loses a small piece of the newspaper-like e-ink appeal. I found that keeping the backlight relatively low helped mitigate this while still maintaining good visibility, even in poorly lit environments.
For writing, these layers also result in ever so slightly more distance between the tip of your stylus and the e-ink below. While minor, it is noticeable, especially when A/B comparing it against non-backlit Carta 1300 displays. Don't get me wrong: It's still perfectly functional as a writing and sketching device and remains pleasant to use, but the difference is there and worth considering if writing is your primary purpose above all else.
For color content, such as PDFs with illustrations and ebooks like graphic novels, this display is a major upgrade from monochrome. While color rendition is nowhere near as vivid as an LCD or OLED display, it still offers a much better viewing experience for any kind of imagery. Graphics are clearer and more engaging, and contrast is much less fiddly.
Reading through one of my collected editions of classic Tales from the Crypt, the difference was night and day. If normal e-ink is similar to reading a page in a paperback, reading a graphic novel is akin to the colors of a newspaper comic strip. On the Note Air 4C using the Vivid color setting, it’s a hair more saturated than Peanuts might be, but not much. Compared to black and white displays, however, it’s a big improvement.
The normal reading experience is similar to that of any other e-ink e-reader. Taken as a whole, its color performance allows it to be a more versatile reading companion if you consume more than pure text, and unlike the recent Kindle Colorsoft, there’s no color bleeding.
The colorization also improves its performance in note-taking and with Android apps. Let's face it: Many apps, including those designed explicitly for taking notes, rely on color — choosing an appropriate highlighter, for example, comes down to muscle memory on a monochrome tablet when everything is varying shades of gray. Here, you can choose your tools with confidence and also pick up on any visual indicators the developers may have baked into their UI.
The Note Air 4C excels in writing and note-taking, but there's still room for growth. Like many other e-ink tablets, it offers a palette of writing tools, including pencil, pen, brush pen, ballpoint pen, and marker. Each of these allows you to control the width of the lines and, in the case of the pencil, the texture that you're writing with.
To support different writing styles, it comes preloaded with templates, encompassing everything from lined paper to to-do lists, schedules, brainstorming sheets, notes, comic panels, grid paper, and more. You can also load your own and, with a recent update, even use PDFs with hyperlinks for in-depth, touch-navigable planners.
The device supports OneNote and it works fine, but the best experience is certainly within this proprietary Boox Notes app. The responsiveness of writing is easily the best, and it includes tools such as layering, inserting keywords and links, AI analysis, text transcription (handwriting to text), and deeper control over what touch gestures will be supported at any given time.
There's a lot here, and it comes along with a fairly deep learning curve. For a good while, I didn't realize that I could disable the bottom gestures (typically used for navigation like a normal Android tablet) and would inadvertently turn the page or zoom in when I lifted my stylus. Experience makes a huge difference in how powerful Boox's note-taking app can truly be, and all it really takes is time logged on simple exploration. When you're done, you're able to export and share these notes or sync them to Boox's servers to use between compatible devices.
Elsewhere on the device, you'll find other tools, like a built-in e-reader (you can download Kindle and other apps that all work fine as well), calendar and task management, an integrated AI assistant, and Android staples like a calculator, clock, and sound recorder. You can even load and listen to music on it or download Spotify if that's more your flavor. The speakers aren’t great for music due to their lack of bass, but since you can connect Bluetooth earbuds, listening to music while you read remains a viable option.
There are also easily overlooked features like the NaviBall tool that adds a collapsible radial of shortcuts to the screen that follows you between apps. A number of different gesture controls and e-ink settings also reduce ghosting and improve animations. Elsewhere, you can choose when the screen completely refreshes to wipe away any traces of ghosts and set the refresh mode for each app individually based on what you decide works best.
Compared to e-ink tablets from most other brands, this one has significantly more functionality. You do trade some of its distraction-free nature for that, but I honestly didn't find that to be a very big sacrifice for the additional versatility. At the same time, this "kitchen sink" approach does mean that the Note Air 4C doesn't offer some smaller but very important features, like the deep intra-note linking of the Supernote.
The quality of the writing tools could also use improvement. While entirely functional, they all feel pretty basic. The pencil in particular leaves a lot to be desired, consistently looking a bit dull and not working nearly as well as it should for shading. Likewise, I've yet to test an e-ink tablet that makes my handwriting look quite as pleasant as the Remarkable Paper Pro with its calligraphy pen. Its handwriting refinement is a special kind of magic that I wish the Boox had.
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