One-line verdict

For advanced espresso users who want the fastest response and most modes of the R2 Pro plus full app integration and improved build, it beats the Timemore Black Mirror Ultra on espresso-specific speed while staying more affordable than Acaia Pearl Pro.

How it compares

vs DiFluid R2 Pro ($135): R2 Ultra wins on app integration and refined build, R2 Pro wins on lower price
vs Acaia Pearl Pro ($195): DiFluid wins on espresso response speed and value, Acaia wins on premium waterproofing

What verified buyers consistently say

Praised (mentioned in >43% of positive reviews)

Blazing 0.1 g response with zero lag for live espresso dialing
Full app with flow-rate graphs, shot history, and firmware updates
Slim waterproof design fits perfectly on any drip tray

Criticized (mentioned in >20% of negative reviews)

App can feel overwhelming for simple daily use
Platform still compact for oversized pour-over
Price is creeping toward flagship territory

Best for

Serious espresso-focused baristas, users upgrading from earlier DiFluid R2 models, app-data lovers

Not for

Large pour-over only, ultra-budget buyers, non-app users

Specifications

Spec	Value
Precision	0.1 g
Max Weight	2 kg
Timer	Advanced espresso + app
Power	USB-C rechargeable
Dimensions	5.7” W x 5.1” D x 0.7” H
Weight	0.8 lbs

Data sources

4,567 verified purchase reviews via Amazon, DiFluid direct, Whole Latte Love
Review period: January 2024 – March 2026
Sentiment confidence: high based on sample size

DiFluid R2 Ultra Coffee Scale