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Our Verdict
The Acaia Lunar is the professional espresso scale, purpose-built to sit on a drip tray and deliver instant, precise feedback during shots. Home pour-over brewers are better served by the Pearl S, but for anyone pulling espresso seriously, the Lunar's compact footprint and flow rate features are unmatched.
Pros
- + Ultra-compact form factor fits perfectly on espresso machine drip trays
- + Real-time flow rate indicator helps refine pour-over and espresso technique
- + Water-resistant anodized aluminum body handles coffee shop abuse
Cons
- – Premium price is difficult to justify for home brewers over the Acaia Pearl S
- – Bluetooth app can be sluggish and occasionally drops connection mid-brew
Our Take
The Acaia Lunar is the espresso-focused sibling of the popular Acaia Pearl, built specifically to fit on the drip trays of commercial and prosumer espresso machines. Its compact 105mm square footprint and low 15.5mm profile slide under portafilters with ease, making it the go-to scale in specialty coffee shops worldwide.
Beyond the form factor, the Lunar’s standout feature is its real-time flow rate indicator, which gives baristas visual feedback on extraction speed during a shot. Combined with 0.1g precision, Bluetooth connectivity, and the Acaia app’s brew logging capabilities, it turns every espresso shot into a data point you can learn from and replicate.
The price is steep for what is essentially a small scale, and the Bluetooth connection can be finicky. For pure pour-over brewing, the larger Acaia Pearl S is a better fit. But if your workflow centers on espresso and you want the most capable scale that fits on a drip tray, the Lunar has no real competition.
Specifications
| Spec | Value |
|---|---|
| MSRP | $250 |
| Max Capacity | 2000g |
| Precision | 0.1g |
| Timer | Yes |
| Auto Start | Yes |
| Weight Grams | 270 |
| Bluetooth Connectivity | Yes |
Frequently Asked Questions
What is the difference between the Acaia Lunar and Acaia Pearl?
The Lunar is smaller and designed to fit on espresso machine drip trays, while the Pearl S is larger and optimized for pour-over brewing. Both offer 0.1g precision and Bluetooth connectivity, but the Lunar adds a real-time flow rate indicator.
Is the Acaia Lunar worth it for home espresso?
For dedicated home espresso enthusiasts who want to track shot weight and flow rate in real time, yes. Casual home users can get similar weighing accuracy from scales costing a fraction of the price.
Does the Acaia Lunar work with the Acaia app?
Yes, the Lunar connects to the Acaia app via Bluetooth to log brew data, display real-time flow rate, and store recipes. The app works on both iOS and Android devices.
Compare Acaia Lunar
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