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Robovations
Robovations™
Robot Autonomy, Classified
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Comparison · 2 robots

Dreame X30 Ultra · ROIDMI EVA

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. Dreame X30 Ultra
  2. ROIDMI EVA
Dreame

Dreame X30 Ultra

Autonomy
III Conditional Autonomy
Score
84/100 Strong
Readiness
Ready Now
Price
$899.99confirmed
Roidmi

ROIDMI EVA

Autonomy
III Conditional Autonomy
Score
51/100 Limited
Readiness
Falls Short
Price
$899list

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
Dreame X30 UltraROIDMI EVA
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
  • Dreame X30 Ultra90
  • ROIDMI EVA60
18median 72 across 354 scored robots100
Coverage and navigation10% of score
Does it work the whole area, and hold that between runs
  • Dreame X30 Ultra82
  • ROIDMI EVA75
15median 70 across 344 scored robots100
Edge-case recovery10% of score
Does it recover from the failures its category presents
  • Dreame X30 Ultra58
  • ROIDMI EVA25
18median 50 across 261 scored robots100
Operating envelope4% of score
How far conditions can vary before performance drops
  • Dreame X30 Ultra82
  • ROIDMI EVA65
25median 70 across 320 scored robots100

Dependability

Field failure rate16% of score
Documented hardware failures per owner-year
  • Dreame X30 Ultra85
  • ROIDMI EVA46
6median 70 across 344 scored robots100
Software stability14% of score
Whether updates fix more than they break
  • Dreame X30 Ultra77
  • ROIDMI EVA40
15median 65 across 275 scored robots100
Support longevity10% of score
Committed parts, service and updates, with dates
  • Dreame X30 Ultra76
  • ROIDMI EVA0
0median 63 across 354 scored robots100

Ownership burden

Routine maintenance12% of score
Hands-on time it asks for in normal operation
  • Dreame X30 Ultra100
  • ROIDMI EVA50
22median 68 across 355 scored robots100
Consumables8% of score
Parts that must be bought to keep it working
  • Dreame X30 Ultra61
  • ROIDMI EVA75
30median 69 across 354 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.

Price193 with a published figure
  • Dreame X30 Ultra$899.99
  • ROIDMI EVA$899
$129.99median $699.99$1,799
Suction (mode not stated)169 with a published figure
  • Dreame X30 Ultra8,300 Pa
  • ROIDMI EVA3,200 Pa
1,000 Pamedian 8,000 Pa36,000 Pa
Runtime168 with a published figure
  • Dreame X30 Ultra180 min
  • ROIDMI EVA220 min
60 minmedian 180 min360 min
Weight171 with a published figure
  • Dreame X30 Ultra9.5 lbs
  • ROIDMI EVA9.3 lbs
3.3 lbsmedian 8.2 lbs36.4 lbs
Height189 with a published figure
  • Dreame X30 Ultra3.8 in
  • ROIDMI EVA4.2 in
2.6 inmedian 3.8 in21.4 in

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

04 Ownership

What the numbers leave out.

The trade-off

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

Dreame X30 Ultra

MopExtend improves edge and corner coverage on the robot’s own detection, and the reach it adds is 4 cm, not a room’s worth. It is a mount that swings within the machine’s footprint, not an arm that extends past it.

Automatic pad detach and in-place washing remove the weekly mop chore. The price is a base station 23.2 inches tall on a 13.4 by 18 inch footprint that has to stay put beside an outlet.

ROIDMI EVA

The dock is designed to self-empty and self-wash mop pads, but an independent review found the design under-delivered on both counts in practice, before the manufacturer’s closure removed any path to a fix.

Remaining retail inventory can still be found through some third-party channels, but buying it now means buying a robot with no manufacturer support of any kind.

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.

Dreame X30 Ultra
Homes above roughly 2,600 sq ft of continuous floor
Dreame states 243 m2, about 2,615 sq ft, on a single charge. Larger continuous layouts mean the robot recharges partway through and resumes, which lengthens the job rather than stopping it.
Owners wanting minimal dock footprint
The base station measures 13.4 by 18 inches on the floor and stands 23.2 inches tall, so it needs a permanent position against a wall beside an outlet rather than a cabinet slot.
Wi-Fi 5 GHz-only networks or band-locked systems
2.4 GHz is required to provision the robot and reach it from the app; without it there is no pairing, no scheduling and no multi-floor map management. The mechanical behaviors, MopExtend and the carpet pad handling, run on onboard detection and are unaffected by connectivity.
Budget-focused buyers
Street pricing $799-999 seats X30 Ultra in mid-to-premium range. Older Dreame models (L10s Ultra) deliver sealed-floor capability at $549-699 with lower arm-maintenance overhead.
Owners expecting a reaching arm
MopExtend is a mop mount that swings out 4 cm (1.57 in) within the robot's own footprint on edge detection. It does not extend into spaces the robot cannot drive to, and it plays no part in carpet coverage.
ROIDMI EVA
Buyers wanting any form of manufacturer support
Roidmi has ceased operations and discontinued product maintenance, returns, and after-sales service.
Large homes needing a single uninterrupted cleaning run
An independent review found the dustbin fills too fast to complete a full-floor clean without manual emptying.
Buyers relying on the dock to fully dry mop pads unattended
The same independent review found pads remained damp more than 12 hours after the drying cycle.

What stays your job

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

Dreame X30 Ultra
  • After every run: Handled by the station, which washes the mop pads in place with 60 C water and dries them with hot air; pads come off and go back on without owner involvement.
  • Every 3-4 weeks in typical use: Refill the 4.5 L clean water tank with ordinary tap water and empty the waste tank. The station dispenses Dreame’s own cleaning solution into the clean water.
  • Weekly: Wipe the station’s docking contacts and the robot’s sensor windows; clear hair from the main brush and side brush.
  • Every 3 months: Replace the auto-empty dust bag (~$15-20 per bag; expected lifespan 8-12 weeks in typical use).
  • Every 6 months: Replace main brush and side brush (~$30-40 per set), or as wear becomes visible.
  • As pads lose absorbency: Replace the mop pads. In-place washing extends their life but does not remove wear.
ROIDMI EVA
  • Cadence: Empty the dust bag roughly every 60 days, per manufacturer specification.
  • Water tanks: Refill and empty the dock’s dual clean/dirty water tanks.
  • Mop pad drying: An independent review found pads remained damp more than 12 hours after the dock’s drying cycle, which in practice may require manual intervention.
  • Setup: Define no-go and no-mop zones in the app.
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
Dreame X30 Ultra Verified 6 Aug 2026
ROIDMI EVA Discontinued 3 Aug 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.