Boox Note Air 4C Review
The Boox Note Air 4C is the Swiss Army knife of e-ink tablets. Where a reMarkable proudly does one thing, the Note Air 4C runs full Android, takes a pen, reads in colour and will happily open Kindle, Kobo, Libby, your email and a browser on the same screen. That flexibility is its superpower and its curse, because everything it does, it does very well but rarely perfectly. Here is how that trade-off actually plays out.
Specifications
| Screen | 10.3" |
|---|---|
| PPI | 300 |
| Colour | Yes |
| Frontlight | Yes |
| Waterproof | No |
| Stylus | Yes |
| Storage | 64 GB |
| Weight | 420 g |
| Price | $499 |
Verdict
The Boox Note Air 4C is the most versatile e-ink device you can buy: colour, a great pen, open Android and every reading app on one screen. You pay for that with shorter battery life, the usual muted colour e-ink, and the small ongoing friction of running Android on a slow display. For the tinkerer who refuses to be locked into one ecosystem and wants a true do-everything slate, nothing else comes close. For everyone who just wants to read or just wants to write, a simpler device will make you happier.
What we like
- Open Android: run Kindle, Kobo, Libby, browser and more on one device
- Colour Kaleido 3 screen, useful for comics, PDFs and colour-coded notes
- Capable stylus with a deep, feature-rich note app
- Premium build with a bright, adjustable frontlight
Worth noting
- Colour e-ink is dim and low-resolution, as on all such screens
- Android on e-ink can feel janky and needs occasional tweaking
- Battery measured in days, not the weeks of a plain Kindle
- Expensive, and more complex than a single-purpose reader
Colour Screen and Hardware
The headline is the 10.3 inch Kaleido 3 colour panel. Be clear-eyed about what that means: colour e-ink is lower resolution and noticeably dimmer than black-and-white, so text is slightly softer and colours are muted, more watercolour than magazine. For comics, highlighted PDFs, charts and colour-coded notes it is genuinely handy. If you expected iPad colour, you will be disappointed, and that is true of every colour e-ink device, not just this one.
The hardware itself is excellent: a slim metal body, a bright adjustable frontlight, a fast processor and a responsive stylus. It feels like a proper premium tablet, which the price reflects.
Open Android: Freedom and Friction
This is the reason to buy a Boox. It runs Android with access to app stores, so you are not locked into anyone's ecosystem. You can read your Kindle and Kobo libraries side by side, borrow from Libby, annotate PDFs in your app of choice and sync notes wherever you like. For anyone frustrated by walled gardens, that freedom is liberating.
The friction is that Android was built for fast colour LCDs, not slow e-ink. Some apps look and feel a little off, occasional scrolling and animation get janky, and you sometimes tune refresh settings per app to get things smooth. Boox has improved this a lot, but it is still fiddlier than a Kindle you never have to think about. You trade simplicity for power.
Writing and Reading
Writing is very good. Latency is low, the palm rejection is reliable, and Boox's note app is deep, with layers, templates and handwriting conversion. It is not quite the paper feel of a reMarkable, but it is close and far more capable in features.
Reading is where the versatility shines. One device holds every store's books, and the big colour screen suits textbooks, comics and PDFs. The one caveat is that colour e-ink is dimmer, so you lean on the frontlight more than you would on a mono reader.
Battery and Software Support
Running Android on e-ink costs battery. Expect days rather than the weeks a Kindle gives you, especially with the frontlight and Wi-Fi active. For a device this capable that is a fair trade, but it is a real difference from a single-purpose reader.
Software updates and the occasional rough edge in Boox's own layer are worth noting. It is powerful and improving, but it asks a little more patience than the plug-and-play crowd.
Price and Who It Is For
At around 499 USD it is a premium device, priced against the reMarkable and Kindle Scribe. What sets it apart is that it does the job of a colour reader, a note tablet and a PDF machine at once.
Buy it if you want one device to do everything and you are comfortable with a bit of Android tinkering. Skip it if you want the purest writing feel (reMarkable), a dead-simple reader (Paperwhite or Kobo), or weeks of battery, all of which mean giving up the all-in-one flexibility.
Frequently asked
Can the Boox Note Air 4C run the Kindle app?
Yes. Because it runs open Android, you can install the Kindle, Kobo, Libby and most other reading apps, and use them side by side. That freedom is the main reason people choose a Boox.
How good is the colour screen?
It is genuinely useful for comics, highlights and charts, but temper expectations: colour e-ink is dimmer and lower-resolution than black-and-white, so it looks like soft watercolour, not a glossy magazine.
How is the battery life?
Days rather than weeks. Running Android with the frontlight and Wi-Fi on uses far more power than a simple e-reader. It is the trade-off for all that versatility.
Note Air 4C or reMarkable Paper Pro?
Pick the Boox for colour, apps and all-in-one flexibility at a lower price. Pick the reMarkable for a better writing feel and a focused, distraction-free device with no Android quirks.