Humanscale Diffrient Smart vs HÅG SoFi

Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.

Humanscale

Humanscale Diffrient Smart

$1,987

HÅG / Flokk

HÅG SoFi

$1,689 – $1,979

$298

lower starting price for HÅG SoFi than Humanscale Diffrient Smart at the brand stores

Differences at a glance

Humanscale Diffrient SmartHÅG SoFi

Price: $1,987$1,689 – $1,979
Seat height: 16.5” – 22.8”395–545 mm (15.6–21.5 in); 450–640 mm (17.7–25.2 in)
Seat depth: 16.25” - 18.75” seat depth adjustment range380–460 mm (15.0–18.1 in)
Load capacity: up to 400 lbs.300 lb (136 kg)
Recline: 18° recline + 8° backrest tiltTilt range is 20° forwards and 14° backwards from a neutral position 4° to the rear
Arms: Fixed Duron Arms / Adjustable Duron Arms / 4D Adj Duron Arms / ArmlessHÅG SlideBack™ armrests: adjust height, width or slide backwards; optional extras (aluminium or plastic); arm height 185-300 mm
Lumbar support: Tri-panel Form-Sensing mesh adapts its lumbar support to each user (no manual lumbar adjustment)Adjustable lumbar support standard; foremost support point 165-260 mm
Warranty: 15-year, 24/7 warranty10-year guarantee against production defects (normal use up to 9 hours per day)

From 2 Humanscale Diffrient Smart and 2 HÅG SoFi user reviews, most mentioned first. Green is liked, orange is a caution.

Which is cheaper, the Humanscale Diffrient Smart or the HÅG SoFi?

The HÅG SoFi is cheaper to start: $1,689 versus $1,987 for the Humanscale Diffrient Smart at the brand stores (Oct 2026).

What do owners mention most?

Comfort for the Humanscale Diffrient Smart, and design for the HÅG SoFi, based on review summaries.