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Comparison · 2 robots

bObsweep UltraVision · Roborock Qrevo Curv 2 Flow

All robot vacuums. Every measure below is plotted against the full class, so a difference can be read against how much the class itself varies.

  1. bObsweep UltraVision
  2. Roborock Qrevo Curv 2 Flow

Up to three

01 Classification

What each one does on its own.

The Autonomy Ladder is the same five rungs for every robot on the site. A rung describes the conditions a robot handles without you, not how good it is.

V
Generalized
Any task, any setting
IV
Environmental
Handles new obstacles without help
III
Conditional
Finishes familiar jobs on its own
bObsweep UltraVisionRoborock Qrevo Curv 2 Flow
II
Assisted
Runs preset routines, needs rescue
I
Manual
One action, on command
02 Assessment

Where they actually differ.

The Robovations Score is nine inputs across three pillars, each weighted as shown and each scored so that more is better. A robot can lead on one and trail on another, which is the point of showing them apart. Cost of ownership and data handling are reported on each robot's own page and are never averaged into the score.

Capability

Task completion16% of score
Does it finish the job it is sold to do, unattended
  • bObsweep UltraVision70
  • Roborock Qrevo Curv 2 Flow82
18median 72 across 428 scored robots100
Coverage and navigation10% of score
Does it work the whole area, and hold that between runs
  • bObsweep UltraVision70
  • Roborock Qrevo Curv 2 Flow75
0median 70 across 416 scored robots100
Edge-case recovery10% of score
Does it recover from the failures its category presents
  • bObsweep UltraVision50
  • Roborock Qrevo Curv 2 Flow60
18median 52 across 317 scored robots100
Operating envelope4% of score
How far conditions can vary before performance drops
  • bObsweep UltraVision60
  • Roborock Qrevo Curv 2 Flow72
28median 68 across 392 scored robots100

Dependability

Field failure rate16% of score
Documented hardware failures per owner-year
  • bObsweep UltraVision57
  • Roborock Qrevo Curv 2 Flow59
6median 70 across 355 scored robots100
Software stability14% of score
Whether updates fix more than they break
  • bObsweep UltraVision65
  • Roborock Qrevo Curv 2 Flow84
15median 65 across 339 scored robots100
Support longevity10% of score
Committed parts, service and updates, with dates
  • bObsweep UltraVision72
  • Roborock Qrevo Curv 2 Flow97
0median 62 across 424 scored robots100

Ownership burden

Routine maintenance12% of score
Hands-on time it asks for in normal operation
  • bObsweep UltraVision62
  • Roborock Qrevo Curv 2 Flow100
22median 67 across 429 scored robots100
Consumables8% of score
Parts that must be bought to keep it working
  • bObsweep UltraVision75
  • Roborock Qrevo Curv 2 Flow77
8median 69 across 429 scored robots100
03 Measured against the class

How far apart is a long way?

A number only means something next to the spread it sits in. Each track below is the real range across every classified robot in the class, with the median marked.

Price214 with a published figure
  • bObsweep UltraVision$929
  • Roborock Qrevo Curv 2 Flow$999.99
$160median $799.99$2,599
Suction (mode not stated)207 with a published figure
  • bObsweep UltraVision8,000 Pa
  • Roborock Qrevo Curv 2 Flow20,000 Pa
1,000 Pamedian 10,000 Pa42,000 Pa
Runtime186 with a published figure
  • bObsweep UltraVision180 min
  • Roborock Qrevo Curv 2 Flow180 min
60 minmedian 180 min360 min
Noise156 with a published figure
  • bObsweep UltraVision60 dB
  • Roborock Qrevo Curv 2 Flow62 dB
43 dBmedian 67 dB80 dB
Weight181 with a published figure
  • bObsweep UltraVision16 lbs
  • Roborock Qrevo Curv 2 Flow10.1 lbs
3.6 lbsmedian 8.5 lbs25 lbs

Not compared, because fewer than two of these robots carry a published figure: Charge time, Height.

04 Ownership

What the numbers leave out.

The trade-off

What each design gives up to be good at what it is good at.

bObsweep UltraVision

The dock takes care of dust for up to 180 days; the mop is a cloth you wash yourself.

List price is $929 at bObsweep, yet retailer sales have sold the same model for $299, so the price paid depends almost entirely on timing.

Roborock Qrevo Curv 2 Flow

Automatic recognition of up to four levels removes the manual map step, but every level still shares one dock, so the robot has to be carried between them.

The roller mop is washed by the dock during the run rather than swapped by hand, which removes the pad-changing chore and adds a dock that needs a permanent level spot with mains power.

Cloud-enabled scheduling and remote starts tie operation to WiFi availability and account login for full feature set.

Who each one is wrong for

Stated by the record itself. A robot being wrong for a household is a fact about fit, not a fault.

bObsweep UltraVision
Homes with shag or deep high-pile rugs
bObsweep's own manual says the brush is not suitable for shag, and no published figure covers other high-pile carpet.
Households that want a mop washed and dried by the dock
The mop is a clip-on microfiber cloth with no rotation, no low-water alert and no washing station; owners wash the cloths by hand.
Long-haired households wanting no brush maintenance
Best Buy owners report hair wrapping the brush roll and weekly manual clearing, since the brush has no self-cutting feature.
Networks that broadcast only 5 GHz Wi-Fi
The owner's manual requires a 2.4 GHz connection to reach the app, maps and schedules.
Homes with sunken showers or step-downs left open
One Best Buy owner watched it fall into a shower well on its second run, and the manual warns it may stall on ledges.
Roborock Qrevo Curv 2 Flow
Homes undergoing frequent renovations or furniture rearrangement
LiDAR maps require updates after major layout changes. Not ideal for homes with items moving week-to-week.
Homes that are wall-to-wall thick or high-pile carpeting
The roller mop lifts up to 15mm automatically when carpet is detected, so carpeted rooms are vacuumed rather than mopped. Nothing has to be removed and no mode has to be selected, but a fully carpeted home uses little of what the mopping dock is for.
Privacy-first users avoiding cloud account requirements
Full app features require WiFi registration and account creation. Local-only operation models exist with less advanced mapping.
Frequent-obstacle homes expecting minimal user intervention
Level III autonomy handles pre-mapped spaces but temporary clutter requires app-based zone exclusion. Daily obstacle clearing still expected.

What stays your job

The upkeep ownership hands back to you, whatever the autonomy level says.

bObsweep UltraVision
  • After every use: Wash the microfiber mop cloths by hand and refill the water tank; replacements are $9 for two.
  • Weekly: Clear hair from the main brush, which owners report wraps without a self-cutting feature.
  • Monthly: Clean the dustbin, filter, sensors and charging station contacts, per the owner’s manual.
  • Every 3-6 months: Replace the 6 L dust bag ($11.99), which bObsweep rates for up to 180 days.
  • As needed: Replace side brushes ($9.99) and main brush (from $14.99) when worn.
  • Annually: Inspect the charging station; the manual lists station replacement every 12 months as a guide.
Roborock Qrevo Curv 2 Flow
  • After every use: Nothing. The dock empties the bin and washes and dries the roller mop.
  • Weekly: Wipe the sensor windows on the top and underside, check the side brush for wound hair.
  • Monthly: Wash or replace the filter, rinse the dock wash tray, check the clean and dirty water tanks.
  • Every 3-6 months: Replace the dust bag as the app prompts, deep clean the wheels and brush head, inspect the dock water line for mineral buildup.
  • Annually: Replace the main brush and the mop roller if not already done, drain the dock and clean the reservoir filter, run a descaling cycle in hard-water areas.
  • As needed: Remap floors if the home layout changes, troubleshoot WiFi if the connection drops, clear any stuck debris.
05 Evidence

How much each of these is standing on.

Classifications rest on different depths of evidence. A pre-release assessment and a verified one are not the same kind of claim.

Evidence behind each classification
Robot Evidence status Sources reviewed Last assessed
bObsweep UltraVision Provisional 6 Sep 2026
Roborock Qrevo Curv 2 Flow Verified 12 Apr 2026

Robovations classifies robots; it does not rank them. Nothing on this page is a recommendation, and no manufacturer influences a classification or its placement here.