Acaia Lunar Espresso Scale

One-line verdict

For serious espresso baristas who demand the fastest possible flow-rate feedback and rock-solid build, the Acaia Lunar remains the compact, water-resistant benchmark that professionals reach for under group heads.

How it compares

• vs Fellow Tally Pro ($200): Acaia wins on response speed and Bluetooth/app features, Fellow wins on larger platform and pour-over guidance
• vs Timemore Black Mirror Basic 2 ($59): Acaia wins on aluminum durability and ultra-fast metering, Timemore wins on price and platform size
• vs Acaia Pearl Model S ($220): Lunar wins on compactness for espresso stations, Pearl wins on larger display and multi-mode flexibility

AI-summarized review themes

Frequently praised

• Extremely fast 0.1 g response time (sub-0.5 s stabilization) lets users see real-time flow rate during espresso shots, repeatedly called “the gold standard” for dialing in
• Anodized aluminum body is water-resistant and survives daily cafe abuse, with many reviewers reporting zero issues after 18+ months of heavy use
• Bluetooth connectivity and customizable modes via Acaia app allow shot logging and firmware updates

Frequently criticized

• Small 105 × 105 mm platform feels cramped for larger pour-over drippers or Chemex, requiring careful centering
• Premium price still stings for home users who only brew 1–2 shots daily

Best for

espresso workflow on commercial or home machines, cafe environments, users who track shot data via app

Not for

large pour-over batches, budget-conscious beginners, anyone who finds compact size limiting

Specifications

Spec	Value
Capacity	2000 g
Precision	0.1 g
Dimensions	105 × 105 × 15 mm
Power	USB-C rechargeable
Battery Life	~30–40 hours
Materials	Anodized aluminum
Timer	Yes, with flow-rate modes
Connectivity	Bluetooth 5.0

Data sources

• Estimated ~1450 public reviews referenced across Acaia site, Clive Coffee, CoffeeNess, YouTube barista channels
• Review period: 2023–2026
• Last generated: 2026-04-06