One-line verdict

The Hario Polaris Coffee Scale delivers fast response and accurate 0.1 g readings with a bright LED display and automatic calculations at a mid-range price, though it uses older micro-USB charging instead of USB-C.

How it compares

vs Hario V60 Drip Scale ($40–$60): Polaris wins on response speed, display brightness, and automatic calculations, V60 Drip Scale wins on price
vs Felicita Arc ($100–$120): Polaris wins on price and display clarity, Arc wins on Bluetooth connectivity and app logging
vs Brewista Smart Scale III ($100–$130): Polaris wins on price, Smart Scale III wins on auto-tare modes and Bluetooth features
vs MiiCoffee Nano Pro ($70–$90): Polaris wins on display readability and brand reliability, Nano Pro wins on compactness and USB-C charging
vs WACACO Exagram ($80–$100): Polaris wins on display brightness and automatic ratio calculations, Exagram wins on portability and compact form factor

AI-summarized review themes

Frequently Praised

Fast response and consistent accuracy for espresso and pour-over
Bright LED display that remains easy to read at angles
Simple intuitive controls with automatic ratio calculations
Solid build quality that feels durable for daily home use
Strong value compared to higher-priced Bluetooth scales

Frequently Criticized

Micro-USB charging instead of modern USB-C standard
Plain visual design that lacks premium aesthetics of flagships

Best for

Intermediate home baristas, espresso dose timing, pour-over ratio tracking

Not for

Users needing USB-C charging, buyers prioritizing sleek appearance

Specifications

Spec	Value
Weighing Precision	0.1 g resolution
Response Speed	Under 200 ms updates
Display	Bright LED
Connectivity	Bluetooth logging
Charging	Micro-USB
Timer	Built-in with auto-start

Data sources

Estimated ~120 purchase reviews via Amazon
Review period: 2023–2026
Sentiment confidence: high

Hario Polaris Coffee Scale (Polaris)

Where to buy