If you’re looking to compare Boox tablets, two standout models deserve your attention: the Boox Note Air 4C and the Boox Tab Ultra C Pro. This Boox tablet comparison outlines key differences to help you decide which Onyx Boox device is better suited for your needs.
Display and Build Quality
Both the Note Air 4C and Tab Ultra C Pro feature a 10.3-inch Kaleido 3 color E Ink display, supporting 4,096 colors. Their black-and-white resolution reaches 300 PPI, while color content is displayed at 150 PPI, ensuring clear visuals for reading, note-taking, and graphics.
However, their screen surfaces differ:
- The Tab Ultra C Pro has a smoother and clearer screen, providing sharper text and improved clarity, making it ideal for working with documents and reading. However, it offers less of a “paper-like” feel when writing.
- The Note Air 4C has a more matte surface, delivering a better paper-like writing experience, but the matte finish slightly reduces display clarity compared to the Tab Ultra C Pro.
In terms of design, the Note Air 4C is slightly thinner and lighter, measuring 226 x 193 x 5.8 mm and weighing 420 grams. Meanwhile, the Tab Ultra C Pro measures 225 x 184.5 x 6.6 mm and weighs 450 grams. Those who prioritize portability may find the Note Air 4C more convenient for travel and daily use.
This is a great starting point for anyone researching Boox Note Air 4C vs Tab Ultra C Pro or looking for a detailed Onyx Boox comparison.
Performance and Storage
In this Boox comparison, both models feature an octa-core processor and 6GB LPDDR4X RAM, ensuring smooth performance and efficient multitasking. However, the Tab Ultra C Pro has a larger 128GB internal storage, whereas the Note Air 4C offers 64GB. For those needing extra space, both models support microSD expansion, allowing for additional storage flexibility. Some users notice that the BOOX Tab Ultra C PRO might operate slightly faster, but this is noticeable only when comparing them side by side.
Software and User Experience
One key difference between the two is their operating systems. The Note Air 4C runs on Android 13, offering the latest security and feature updates, while the Tab Ultra C Pro operates on Android 12. Despite this, their interfaces are nearly identical, as both models run Onyx Boox’s customized Boox OS, which optimizes the software for e-paper displays. Additionally, both devices have access to the Google Play Store, allowing users to install various apps.
Battery Life and Power Efficiency
Battery performance is crucial for e-paper tablets. The Tab Ultra C Pro is powered by a 4,600mAh Li-ion Polymer battery, while the Note Air 4C features a 3,700mAh battery. The larger battery in the Tab Ultra C Pro translates to longer usage between charges, making it ideal for users who need extended screen time.
Additional Features
One of the biggest advantages of the Tab Ultra C Pro is its ability to connect to a dedicated cover with a built-in keyboard and trackpad. This feature transforms the device into a more laptop-like experience, allowing for faster typing, improved navigation, and enhanced productivity. This makes the Tab Ultra C Pro a more versatile option for users who want a device that can handle both reading and work tasks.
Additionally, the Tab Ultra C Pro includes a 16 MP rear camera with LED flash, allowing users to scan documents or capture high-quality images. This feature is particularly beneficial for professionals and students who frequently digitize handwritten notes or paperwork.
Pricing and Value for Money
As of 2025, the BOOX Note Air 4C is approximately $705 CAD, while the BOOX Tab Ultra C Pro is around $845 CAD. These prices are directly converted from US dollars to Canadian dollars, and actual prices in Canada may vary. The price difference reflects the added storage, larger battery, camera, and keyboard support available in the Tab Ultra C Pro.
If you’re looking for BOOX in Canada, Einktab is always glad to offer the best possible deal, along with exceptional customer service, a flexible return policy, and a local warranty with service available in Canada.
Final Verdict: Which One is Right for You?
Both the Boox Note Air 4C and Boox Tab Ultra C Pro are excellent E Ink tablets, but they cater to different user needs:
- The Note Air 4C is more focused on writing. It has a matte screen for a paper-like feel, making it ideal for note-taking, journaling, and sketching.
- The Tab Ultra C Pro is more like a traditional tablet with better screen clarity, more storage, a larger battery, and keyboard support, making it a more universal device for both reading and productivity tasks.
Ultimately, if you prioritize a writing-focused experience, the Note Air 4C is a great choice. But if you want a more versatile tablet that can also function as a lightweight productivity device, the Tab Ultra C Pro is the better option.
Whether you’re considering the Boox Note Air 4C review or the Tab Ultra C Pro review, your decision should come down to your specific use case — writing vs productivity.
FAQ
The Boox Note Air 4C is designed for handwriting and sketching, offering a matte screen for a paper-like feel. The Tab Ultra C Pro, on the other hand, focuses on productivity, with sharper display clarity, more internal storage, a larger battery, and optional keyboard support.
The Note Air 4C provides a better writing experience due to its matte screen surface, which closely mimics real paper. It’s ideal for note-taking, journaling, or sketching.
No, only the Tab Ultra C Pro supports a dedicated magnetic keyboard with a built-in trackpad, making it a better option for users who need to type or navigate frequently.
Both tablets feature an octa-core processor and 6GB of RAM, but the Tab Ultra C Pro has slightly faster performance and double the storage (128GB vs 64GB), which can be helpful for multitasking and app-heavy workflows.
It depends on your needs. If you’re focused on writing and note-taking, the Boox Note Air 4C is ideal. If you’re looking for a versatile e-ink tablet that handles reading, work, and light productivity, the Tab Ultra C Pro is the better choice.
As an Islamic scholar involved in non-profit educational work, I’ve carefully compared these models for Qur’an study, Hadith reference, and reading Arabic and Urdu Islamic texts. I’ve chosen the BOOX Tab Ultra C Pro because it offers greater storage, excellent note-taking features, and includes the Pen2 Pro.
Special thanks to Wendy from the Einktab.ca team for her thoughtful and detailed assistance throughout our email correspondence. Your guidance has been truly helpful.
I look forward to using this device for my ongoing educational efforts through The Ilahi Foundation of Canada.
Asma. MN
http://www.theilahifoundation.com
Thank you for your kindness and for sharing your feedback! It helps other customers choose the model that best fits their needs.