BOOKOO Themis Ultra – Bluetooth Coffee Scale with Timer & App

Why weigh your coffee to 0.1g precision?

With espresso, tenths of a gram make all the difference in taste. One gram more Kaffeemehl in the basket and your recipe flows differently. The Themis Ultra resolves 0.1g and responds at 0.1g/s, fast enough even during extraction to show deviations instantly. The weighing range goes up to 2000g, so a full filter carafe fits on the platform.

How waterproof is the Themis Ultra?

Spilled brew water is the most common reason coffee scales break. The Themis Ultra is sealed to IP67 against water and dust: splashes, wet hands and a quick rinse won't hurt it.

The manufacturer does mention two limits, and we think that's important to note: avoid prolonged submersion as well as hot water and steam over extended periods. A silicone mat is included for hot carafes and cups—it insulates against heat and protects the weighing surface from scratches.

Timer and four modes

The scale is operated via two capacitive touch buttons, and the integrated timer measures your brew time directly on the scale.

Four modes cover different working styles: pure weighing, real-time flow rate, ratio display for your brew ratio, and an auto mode that automatically tares during extraction, starts the timer, and stops it as soon as the flow drops to zero.

Which apps work with the scale?

Connected to the BOOKOO N App, the scale records extraction curves: weight, time and flow rate for every brew. The scale isn't tied to the manufacturer's app: it communicates via an open Bluetooth protocol and also pairs with Beanconqueror, Odyssey Espresso and the DEESPRESSO App, as well as smart machines and retrofit systems like Decent, Gaggiuino and Gaggimate. And if you don't want an app at all: the scale works completely without one. Via the BOOKOO N App you can only set weight unit, beep tone, splash guard mode and auto-shutoff (default: 15 minutes) and push firmware updates.

Our recommendation is Beanconqueror: an app that convinced us and which Ben also made a video about. This lets you save detailed records of all relevant parameters around your espresso or filter coffee extraction. You'll find pretty much all our coffees and their data in the app as well.

Themis Ultra or Themis Mini - which is right for you?

We stock both Themis scales, and the choice is simpler than it looks: it's about space.

The Themis Mini measures only 80 x 80mm and fits tight drip trays, under compact machines and in your travel bag. But it only weighs up to 1000g and offers IPX4 splash water protection instead of being fully waterproof.

The Ultra is the scale for a permanent spot on the counter: larger platform for pour-over carafes and servers, 2000g capacity, IP67, three values on display simultaneously instead of two, and three times longer battery life.

In short: Ultra for home and all brewing methods, Mini if every millimeter under the machine counts.

Battery instead of disposables

Charging is via USB-C, a full charge takes around two hours. The 2000mAh battery lasts up to 72 hours in continuous operation. For everyday use, that means: plug it in every few weeks, done.

Technical specifications

Included in delivery

• 1x BOOKOO Themis Ultra coffee scale
• 1x silicone mat
• 1x USB-C charging cable

Manuals for download

• User manual (multilingual, incl. German) [Download PDF here]
• Quick Start Guide (English) [Download PDF here]