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BOOKOO
First IP67 Waterproof & Bluetooth Coffee Scale
Disclaimer: All reviews contain subjective opinions of the NANZA team.
[Funding Status]
Pledges: $300,181
(as of Aug 15, 2025)
Live until: September 28, 2025
@ 9:00 AM (PDT)
[Reward Price]
Early Bird: $83 USD (39% off retail)
* Shipping fee not included.
[Estimated Shipping Time]
Oct 2025
NANZA Tl;dr
The BOOKOO Themis Ultra is a coffee scale that blends cutting-edge functionality with modern aesthetics, marketed as the world’s first coffee scale to combine IP67 waterproofing, a transparent polycarbonate body, and Bluetooth connectivity. Compact in size yet full of features, it caters to both espresso and pour-over users by providing ultra-fast response times, precise measurements, and app-based tools for flow rate tracking, extraction profiling, and detailed brewing data management. Beyond its durability and sleek design, it offers a fully integrated experience with BOOKOO’s mobile app and firmware support, ensuring that coffee enthusiasts can analyze and replicate their brews with professional-grade accuracy. While the product has received wide enthusiasm for its innovation, design, and early-backer perks, some users have also raised concerns about firmware stability and long-term reliability, making it both a trailblazing innovation and a product to watch closely as it reaches backers later in 2025.
Summary
IP67 Waterproofing
Unlike many high-end coffee scales that are only splash-resistant, the Themis Ultra achieves a full IP67 waterproof rating, meaning it can be safely rinsed, exposed to spills, or used in humid environments without compromising performance. This makes it particularly practical for espresso stations where accidental overflows and messes are common, adding peace of mind and longevity.
Transparent Polycarbonate Bod
Its see-through design made from transparent PC (polycarbonate) offers a futuristic, minimalist aesthetic while being more impact-resistant than glass. The transparency doesn’t just look sleek—it also makes the scale less obtrusive visually, blending into different setups, whether in a minimalist home barista corner or a professional café environment.
Compact Yet Functional Dimensions
Measuring 125 × 110 × 16 mm, the scale is thin and compact enough to fit comfortably under most espresso machine group heads and pour-over setups. Despite its small footprint, it provides ample surface area for standard brewing equipment and cups, ensuring versatility without cluttering counter space.
Bluetooth Connectivity
The scale pairs seamlessly with BOOKOO’s companion app, enabling wireless monitoring of brewing data like time, weight, and flow rate. This integration lets users store and replicate recipes, track consistency across brews, and even share their data with fellow enthusiasts—bridging casual use with advanced coffee geekery.
Advanced Extraction Profiling
Going beyond weight and timer functions, the Themis Ultra—when paired with the app—offers real-time pressure, flow, and extraction data, helping baristas fine-tune their process. This feature mimics tools previously only available with expensive commercial equipment, giving home users access to café-level precision.
Kickstarter-Exclusive Rewards
Early backers are offered incentives such as discounted pricing, a 2-year warranty, and VAT/customs fees included—all of which add tangible value. This is a particularly strong draw compared to competitors, where warranties are often just one year and shipping/import fees can be costly.
Community & Early Support Networks
BOOKOO has created dedicated Facebook and Discord communities, allowing backers to stay updated, test beta firmware, and share brewing experiences. This kind of active community support not only builds trust but also creates an ecosystem where troubleshooting, tips, and upgrades can be shared quickly among users.
Praised for Responsiveness
Early adopters who tested prototypes praised the fast, accurate response times and the premium feel of its construction, describing it as a worthy rival to established players like Acaia. Its integration with third-party apps such as Bean Conqueror also adds credibility, making it more versatile for enthusiasts who already use digital brewing tools.
Shipping:
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What We Love
1. Multi-Device App
Beyond BOOKOO’s own app, the scale has shown early compatibility with popular third-party apps used by serious coffee hobbyists, such as Bean Conqueror and potentially others in the brewing community. This openness increases its appeal because users aren’t locked into a single ecosystem, allowing them to track their brews with tools they may already rely on.
2. Firmware Update System
BOOKOO manages updates through two apps: one for logging (the standard app) and another called BOOKOO Tools, dedicated to firmware upgrades and fixes. While this dual-app approach adds complexity, it also shows that the company is actively refining its product. Frequent updates are expected, meaning backers will likely see performance improvements over time, provided they remain engaged with the update ecosystem.
What We Don't
1. Surface Material and Visibility
While the transparent polycarbonate design is sleek and modern, it may cause glare or reflections that make the display or measurement area harder to read in bright environments, especially near windows or under café lighting. A subtle anti-glare coating or a matte-finish variant could help improve visibility while preserving the stylish transparent look. This would make the scale not only eye-catching but also more practical in a wide range of real-world brewing setups.
Is it Worth it?
What makes the BOOKOO Themis Ultra worth the purchase is the way it combines design innovation, durability, and advanced functionality in one compact package. Unlike most coffee scales that are either precise or stylish but rarely both, the Themis Ultra delivers IP67 waterproofing for true durability, a transparent polycarbonate body that’s both modern and lightweight, and Bluetooth connectivity with advanced profiling features normally reserved for high-end professional equipment. It isn’t just a tool for weighing coffee—it’s a platform for tracking flow rate, extraction data, and recipe consistency, helping both home brewers and professionals elevate their craft. Add in thoughtful perks like a 2-year warranty, VAT/customs included for backers, and compatibility with popular third-party apps, and it becomes clear that this scale is designed to last, grow with its users, and fit seamlessly into different brewing styles. In short, it’s worth it because it gives coffee enthusiasts precision, resilience, and future-forward features in a product that feels as good to use as it looks on the counter.