Compare Narwal Freo X Ultra Robot Vacuum and Mop vs Roborock Qrevo Edge S5A Robot Vacuum and Mop

P1 Narwal Freo X Ultra Robot Vacuum and Mop
P2 Roborock Qrevo Edge S5A Robot Vacuum and Mop

Comparison Takeaways

Narwal Freo X Ultra Robot Vacuum and Mop

Where It Has the Edge

  • Solution / Liquid system is 4.0 vs 2.8. Detergent/solution support is a differentiator (often included and auto-dispensed). Some reviewers like the cleaning boost; others dislike being...
  • Aesthetic design and finish is 4.7 vs 3.7. Design and finish get frequent praise: the base station looks sleek/futuristic and hides the robot well compared with...
  • Build quality and durability is rated 4.8 while the other product has no score yet. Build quality is generally described as premium and well-assembled for both robot and dock, with sturdy plastics and...
  • Carpet — High-Pile Pickup is rated 4.4 while the other product has no score yet. High-pile carpet performance is reported as decent to strong in some testing, though climbing on/off thick rugs or...

Roborock Qrevo Edge S5A Robot Vacuum and Mop

Where It Has the Edge

  • Docking and Auto-Empty Reliability (Robot) is 4.6 vs 3.2. Docking and automation are consistently reliable in reviews: automatic dust emptying, water refilling, mop washing, and drying generally...
  • Emptying and Mess Control is 4.6 vs 3.5. Auto-emptying to a sealed bag keeps dust handling clean and hands off, and swapping bags is reported to...
  • Area Rug Handling is 4.2 vs 3.1. Mop pads lift when carpet/rugs are detected and many users report rugs staying dry during transitions. Very high-pile...
  • Under-Furniture Pickup is 4.3 vs 3.2. Its relatively low height helps it reach under furniture and low cabinetry where many robots miss dust. At...
Average score
Product 1: Narwal Freo X Ultra Robot...
3.8
Product 2: Roborock Qrevo Edge S5A Robot...
4.2
Accessories and Tools
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.4

The box contents are comprehensive for an all-in-one robot: dock, ramp, mop pads, power cord, an extra dust bag, and printed guides, making it easy to get started without extra purchases.

Adaptive chassis lift
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
1.2

This model does not include an adaptive lift chassis, which limits threshold climbing compared with the higher Edge model and some flagships. If your home has tall transitions, this is a notable constraint.

Aesthetic design and finish
Product 1: Narwal Freo X Ultra Robot...
4.7

Design and finish get frequent praise: the base station looks sleek/futuristic and hides the robot well compared with many bulky docks.

Product 2: Roborock Qrevo Edge S5A Robot...
3.7

Design is generally viewed as modern and clean, though some reviewers prefer the more premium-looking alternatives (for example Curv or flagships). The dock can look a bit industrial, but the robot and station still fit well in most rooms.

AI, Smart, App and Automation
Product 1: Narwal Freo X Ultra Robot...
4.2

Automation features (dirt sensing / Freo mode, adaptive passes, scheduling, voice control integrations) are a major value-add, though ‘smart’ behavior can be inconsistent depending on firmware and setup.

Product 2: Roborock Qrevo Edge S5A Robot...
4.7

Automation and smart features are a highlight: schedules, no-go/no-mop zones, multi-floor maps, granular suction and water control, assistant integrations, and dock control. Obstacle detection relies on structured-light style sensing rather than a camera on this model.

Area Rug Handling
Product 1: Narwal Freo X Ultra Robot...
3.1

Area rugs can be a pain point for some homes—fringe/corners may get caught or displaced, and cords near rugs increase snag risk.

Product 2: Roborock Qrevo Edge S5A Robot...
4.2

Mop pads lift when carpet/rugs are detected and many users report rugs staying dry during transitions. Very high-pile carpets may still get damp depending on settings, so vacuum-first routines can be helpful.

Assembly and Setup
Product 1: Narwal Freo X Ultra Robot...
4.7

Setup is generally described as straightforward (app pairing, Wi-Fi, mapping), though some users wanted clearer instructions and find map editing takes practice.

Product 2: Roborock Qrevo Edge S5A Robot...
4.7

Setup is described as straightforward: attach the ramp, plug in the dock, charge, pair to Wi‑Fi, and fill the clean water tank. Most reviewers report quick, hassle-free first run and mapping.

Bag-full indicator
Product 1: Narwal Freo X Ultra Robot...
2.8

Some users note the app provides reminders for replacing disposable bags, but there isn’t always a clear, foolproof ‘full’ sensor experience compared with docked self-empty systems.

Product 2: Roborock Qrevo Edge S5A Robot...
No score yet
Battery and Charging
Product 1: Narwal Freo X Ultra Robot...
4.3

Battery life is commonly reported as strong, with long runtimes and the ability to cover large areas; long, meticulous mopping cycles can still trigger recharge-and-resume in big spaces.

Product 2: Roborock Qrevo Edge S5A Robot...
4.4

Battery life is repeatedly called a strong point, with a large battery and long runtimes on lower suction settings. Higher suction drains faster, and some testing shows max-power coverage below average, but typical mixed use is expected to fall in between.

Bin and Bag
Product 1: Narwal Freo X Ultra Robot...
3.5

Onboard bin/bag system emphasizes containment and capacity via compression; convenient for allergies and quieter than dock emptying, but still requires manual bag/bin changes.

Product 2: Roborock Qrevo Edge S5A Robot...
4.5

Uses a dock dust-bag system that empties cleanly and is easy to swap with minimal mess. Reported replacement cadence ranges from roughly 30–60 days to about 2–3 months depending on debris load.

Build quality and durability
Product 1: Narwal Freo X Ultra Robot...
4.8

Build quality is generally described as premium and well-assembled for both robot and dock, with sturdy plastics and solid fit-and-finish.

Product 2: Roborock Qrevo Edge S5A Robot...
No score yet
Carpet — High-Pile Pickup
Product 1: Narwal Freo X Ultra Robot...
4.4

High-pile carpet performance is reported as decent to strong in some testing, though climbing on/off thick rugs or thresholds can slow cycles.

Product 2: Roborock Qrevo Edge S5A Robot...
No score yet
Carpet — Low-Pile Pickup
Product 1: Narwal Freo X Ultra Robot...
3.2

Low-pile carpet pickup is a recurring weak spot in some tests and user reports, especially for deeper grit and fine particles compared with top carpet-focused robots.

Product 2: Roborock Qrevo Edge S5A Robot...
No score yet
Carpet — Medium-Pile Pickup
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.5

Carpet cleaning is generally rated strong for the tier, including an above-average deep-cleaning score in testing and good pickup on rugs. Performance is not positioned as flagship-level, but it is consistently described as effective.

Clogging and debris prevention
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.6

The brush and dock system handle heavy hair and mixed debris without frequent clogs, and auto-emptying is reported to work without choking on hair. Occasional checks are still advisable, but clogging is not a common complaint.

Comparative performance
Product 1: Narwal Freo X Ultra Robot...
4.4

Comparisons often position it as stronger at mopping and hair handling than many rivals, but behind the best all-around flagships for dust auto-empty and consistent obstacle avoidance.

Product 2: Roborock Qrevo Edge S5A Robot...
4.1

Across comparisons, the S5A is framed as upper mid-tier: strong fundamentals and automation, but behind flagships in obstacle avoidance sophistication and premium extras. Many reviewers still consider it a sweet spot when priced well.

Controls and UI
Product 1: Narwal Freo X Ultra Robot...
3.7

App is feature-rich (scheduling, room targeting, modes), but some users find map editing and zoom/room definitions finicky; base-station controls help for basic starts/stops.

Product 2: Roborock Qrevo Edge S5A Robot...
4.6

The Roborock app and controls are repeatedly called intuitive and customizable, with clear UI for maps, routines, suction, and water levels. Live video-style viewing is not available on this model, but core control is polished.

Corner Cleaning (Robot)
Product 1: Narwal Freo X Ultra Robot...
3.5

Corner cleaning is inconsistent: vacuuming corners can be strong thanks to dual side brushes, while mopping corners may still miss without an extending pad.

Product 2: Roborock Qrevo Edge S5A Robot...
4.4

Corner cleaning improves notably thanks to an extending side brush, leaving corners visibly cleaner than many robots. Some reviews still note a small amount of leftover debris in tight corners.

Crevice / Groove Pickup (Hard Floors)
Product 1: Narwal Freo X Ultra Robot...
3.7

Crevice/groove pickup on tile and seams is above average in some testing but not perfect—fine grit can require an extra pass in deeper grooves.

Product 2: Roborock Qrevo Edge S5A Robot...
No score yet
Dirty water sensor
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.1

The dock dirt-detection and remopping concept can work well (for example, triggering a second pass after muddy paw prints). However, other testing reports it did not reliably detect certain dried stains, making the behavior inconsistent.

Docking and Auto-Empty Reliability (Robot)
Product 1: Narwal Freo X Ultra Robot...
3.2

Because there’s no dust auto-empty dock, reliability hinges on docking/charging and mop-service cycles, which are generally stable; the tradeoff is manual dust management.

Product 2: Roborock Qrevo Edge S5A Robot...
4.6

Docking and automation are consistently reliable in reviews: automatic dust emptying, water refilling, mop washing, and drying generally work as expected. The tradeoff is a larger dock footprint compared with simpler stations.

Dock noise
Product 1: Narwal Freo X Ultra Robot...
4.0

Dock noise is generally described as low for washing/drying compared with auto-empty docks; water pumping can be the most noticeable sound.

Product 2: Roborock Qrevo Edge S5A Robot...
No score yet
Dried-On Stain Removal
Product 1: Narwal Freo X Ultra Robot...
3.9

Above-average dried-stain removal in several tests (coffee/juice and set-on messes), but not always the very top performer; jam/BBQ-style residues may require multiple runs.

Product 2: Roborock Qrevo Edge S5A Robot...
4.3

Handles common dried messes well, including muddy paw prints and dried coffee, often improving significantly on a second pass. Tougher stains like dried ketchup may require multiple passes and sometimes manual intervention.

Edge and Baseboard Cleaning (Hard Floors)
Product 1: Narwal Freo X Ultra Robot...
4.1

Edge/baseboard cleaning is improved by edge-focused behaviors and pad geometry, but reports vary—some praise edges while others still see missed mopping along tight baseboards.

Product 2: Roborock Qrevo Edge S5A Robot...
4.6

Edge and baseboard cleaning is a consistent strength, helped by an extending mop pad and flex arm side brush that can reach right up to walls. It is often described as better than most robot mops, though not always perfect in tight corners.

Edge‑Following Accuracy (Robot)
Product 1: Narwal Freo X Ultra Robot...
3.9

Edge-following accuracy is generally strong during vacuuming paths (tight wall tracking), but mopping edge reach varies because the pads don’t extend outward.

Product 2: Roborock Qrevo Edge S5A Robot...
4.4

Edge-following is strong, with the robot staying close to walls and the mop pad reaching into baseboard lines. Reviewers often show it maintaining contact better than typical robot mops.

Emptying and Mess Control
Product 1: Narwal Freo X Ultra Robot...
3.5

Mess control is good when swapping disposable bags (less dust plume), but the lack of dock emptying means you must stay on top of periodic manual emptying/checks.

Product 2: Roborock Qrevo Edge S5A Robot...
4.6

Auto-emptying to a sealed bag keeps dust handling clean and hands off, and swapping bags is reported to be quick with minimal mess. This is a major convenience advantage for frequent cleaning.

Floor Drying Time
Product 1: Narwal Freo X Ultra Robot...
3.0

Floor surface drying depends on settings and how often the dock refreshes pads; while pads dry at the dock, overall post-clean dryness can take longer on heavy/wet mopping modes.

Product 2: Roborock Qrevo Edge S5A Robot...
No score yet
Fresh Liquid Pickup Speed
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.5

Fresh liquid pickup is reported as effective when mopping up spills like a glass of water, with the spinning pads absorbing and clearing liquid without leaving notable residue.

Hair-removal channel issues
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.4

When hair does collect, it tends to channel toward the center of the split brush, making it quick to remove by hand. This is described as manageable rather than a major snagging problem.

Hair Pickup — Carpets
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.3

Carpet hair pickup is usually strong, especially on rugs, though a few tests still show small amounts of hair remaining after a pass. Overall performance is described as better than average for this tier.

Hair Pickup — Hard Floors
Product 1: Narwal Freo X Ultra Robot...
4.3

Hard-floor pickup is consistently strong for dust, cereal, and pet hair, with good overall coverage during vacuum+mop routines.

Product 2: Roborock Qrevo Edge S5A Robot...
4.7

Hair pickup on hard floors is a standout, including long and even slightly damp strands, with users reporting thorough collection and minimal cleanup afterward.

Hair‑Wrap / Tangle Resistance
Product 1: Narwal Freo X Ultra Robot...
4.8

Tangle resistance is one of the most praised features: multiple reviewers report little to no hair wrapping on the main brush, with only occasional side-brush cleanup.

Product 2: Roborock Qrevo Edge S5A Robot...
4.8

Hair-wrap resistance is one of the biggest strengths: the DuoDivide brush and redesigned side brush greatly reduce tangles. In extreme stress tests, some hair may channel to the center and require a quick manual pull, but it is easy to clear.

Hard Floor — Fine Dust Pickup
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.6

Hard-floor fine dust pickup is repeatedly described as strong, including successfully collecting very fine particles like powdery debris without leaving a visible film.

Hard Floor — Large Debris Intake
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.6

Handles larger debris well on hard floors, such as crumbs, rice, and oatmeal, often clearing scattered mess in a single run or a couple of passes.

Headlight and LED lights
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
1.5

This model is noted as lacking built-in LED or headlight illumination, which some reviewers say would help in dim rooms and for better obstacle detection.

Heating element
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.4

The dock uses heated processes (hot water mop washing and warm/hot air drying). Some testing questions whether advertised maximum water temperature is reached, but the heating still appears effective for pad cleaning and drying.

Low-profile design
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.3

The robot is relatively slim for a LiDAR-top model (around 4 inches / ~9.8 cm), helping it fit under more furniture than many competitors. It is still taller than ultra-thin flagships that remove the top LiDAR turret.

Maintenance requirements
Product 1: Narwal Freo X Ultra Robot...
4.0

Maintenance load is reduced by mop washing/drying, but you still have recurring tasks: manage water tanks, periodically clean trays/brushes, and replace bags/filters/pads over time.

Product 2: Roborock Qrevo Edge S5A Robot...
4.4

Maintenance is largely hands off thanks to the auto-empty and mop-wash dock, plus reduced hair tangling. Users still need to replace bags, rinse/clean the dock tray occasionally, and maintain filters and pads.

Map and Path Efficiency (Robot Vacuums)
Product 1: Narwal Freo X Ultra Robot...
3.6

Mapping is usually accurate and paths are methodical, but multiple reviewers mention slower completion times and occasional room-splitting/zone quirks, especially in open layouts.

Product 2: Roborock Qrevo Edge S5A Robot...
4.6

LiDAR-based navigation earns strong marks for fast, accurate mapping and efficient room coverage. Multi-floor support and reliable pathing are repeatedly highlighted as core strengths.

Mop lifting system
Product 1: Narwal Freo X Ultra Robot...
4.6

Mop pads lift around 12 mm on carpet in most reports, enabling vacuum+mop workflows with less risk of wet rugs; a few note slight dragging on some carpets/rug edges.

Product 2: Roborock Qrevo Edge S5A Robot...
4.4

The mop lifting system (about 10 mm) works well for most rugs and carpets and helps prevent wetting during transitions. Very plush/high-pile carpet can still be challenging without using vacuum-first settings.

Mopping performance
Product 1: Narwal Freo X Ultra Robot...
4.4

Strong, mop-first performance: triangular spinning pads with higher pressure and frequent pad washing deliver consistently good hard-floor cleaning; thick/sugary messes and grout can still take extra passes.

Product 2: Roborock Qrevo Edge S5A Robot...
4.5

Mopping performance is widely praised: dual spinning pads, adjustable water output, and frequent pad washing produce clean, refreshed hard floors. Sticky dried stains may take multiple passes, but everyday grime is handled very well.

Noise level
Product 1: Narwal Freo X Ultra Robot...
4.6

Day-to-day running noise is repeatedly called out as very quiet for a flagship combo, making it easier to run while working or sleeping.

Product 2: Roborock Qrevo Edge S5A Robot...
4.5

Generally quieter than many competitors; peak loudness is cited around 70 dB on higher suction, and real-home testing reports low disruption (pets barely reacting).

Obstacle Avoidance (Robot)
Product 1: Narwal Freo X Ultra Robot...
3.4

Obstacle avoidance is mixed: some reviews praise general navigation around clutter, but cords are a common failure mode and a few tests report poor avoidance of low objects.

Product 2: Roborock Qrevo Edge S5A Robot...
3.3

Obstacle avoidance is the most mixed area: some users see graceful navigation around common items, while multiple controlled tests show it can run over cables and miss smaller or low objects, especially on carpet. Camera-equipped models are consistently reported as better here.

Odor control
Product 1: Narwal Freo X Ultra Robot...
4.3

Odor control is generally good thanks to mop drying and dirty-water handling; several reviewers report minimal lingering smell after mopping cycles.

Product 2: Roborock Qrevo Edge S5A Robot...
4.8

Hot-water washing plus hot/warm air drying helps keep mop pads fresh, and at least one real-home review explicitly reports no lingering smells after repeated runs.

Ongoing ownership costs (bags, filters, batteries)
Product 1: Narwal Freo X Ultra Robot...
3.5

Ongoing costs include replacement detergent, dust bags (if used), mop pads, and filters; costs are manageable but should be expected for long-term ownership.

Product 2: Roborock Qrevo Edge S5A Robot...
4.2

Consumables are typical for an auto-empty robot: dust bags and periodic filter cleaning/replacement. Reported bag life of 30–60 days (or 2–3 months) helps keep ongoing costs manageable, but you may also buy cleaning solution since it is manually dosed.

Pet-Ready Features
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.6

Well-suited to pet homes thanks to excellent hair pickup and anti-tangle brush design. It lacks camera-based pet recognition features found on higher models, but day-to-day pet hair cleanup is a standout.

Price and Value
Product 1: Narwal Freo X Ultra Robot...
3.3

Value perception depends heavily on sale price: many like the performance and mop automation, but several call MSRP expensive given no dust self-empty and mixed obstacle avoidance.

Product 2: Roborock Qrevo Edge S5A Robot...
4.3

Value is strongest when discounted, with multiple reviewers calling sale pricing an excellent deal versus higher models with cameras or chassis lift. At full price it sits in an upper mid-tier range and may feel expensive if you mainly want top obstacle avoidance.

Privacy controls
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.6

The absence of a front-facing camera means no live video monitoring, which many see as a privacy benefit. The tradeoff is weaker camera-assisted obstacle recognition and fewer monitoring features compared with models that include an RGB camera.

Runtime
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
4.7

Measured low-suction runtime and coverage are impressive in testing, with the robot covering roughly 3,947 sq ft before reaching 0% battery, which is above average. Measured max-suction runtime and coverage are weaker in testing, with roughly 513 sq ft covered before depletion, which is below average. Expect significantly better results on mixed or lower suction settings.

Self-cleaning cycle
Product 1: Narwal Freo X Ultra Robot...
4.5

Dock-driven self-cleaning is a core strength: automatic mop pad washing and heated/air drying reduce odors and day-to-day mop maintenance; some note longer cycles due to frequent washing.

Product 2: Roborock Qrevo Edge S5A Robot...
4.6

The dock automates mop washing, pad drying, water refills, and in some cases self-cleaning of the base tray. Reviews generally find these cycles effective and appreciate the reduced hands-on maintenance.

Software-update support / feature longevity
Product 1: Narwal Freo X Ultra Robot...
3.0

Several reviewers expect software/firmware updates to improve smart behaviors (like DirtSense and avoidance). Current experience varies, so longevity depends on ongoing support.

Product 2: Roborock Qrevo Edge S5A Robot...
No score yet
Solution / Liquid system
Product 1: Narwal Freo X Ultra Robot...
4.0

Detergent/solution support is a differentiator (often included and auto-dispensed). Some reviewers like the cleaning boost; others dislike being nudged toward proprietary refills.

Product 2: Roborock Qrevo Edge S5A Robot...
2.8

There is no auto solution or detergent dispensing tank, so cleaning solution must be added manually to the clean water tank. Multiple reviews call this a missed feature at this price.

Storage footprint and upright-stand stability
Product 1: Narwal Freo X Ultra Robot...
3.0

Base station is often described as sleek but sizable; placement is easiest where the dock footprint and water-tank access aren’t in the way.

Product 2: Roborock Qrevo Edge S5A Robot...
3.8

The dock is described as larger because it houses clean/dirty tanks and the auto-empty system, so it needs dedicated floor space. Some comparisons note it is narrower than certain flagship docks, but it is still a sizable station.

Streaking / Residue
Product 1: Narwal Freo X Ultra Robot...
3.5

Residue/streaking is generally controlled thanks to pad design and detergent options, but sticky sauces/honey can leave light tackiness that needs extra passes or manual spot work.

Product 2: Roborock Qrevo Edge S5A Robot...
4.2

Mopping is typically reported as streak free on hard flooring, but heavy muddy messes can smear on an initial pass before pad washing and follow-up cleaning improves the result.

Stuck resistance
Product 1: Narwal Freo X Ultra Robot...
2.8

Stuck resistance is usually solid, but there are reports of getting hung up on certain furniture bases or snag-prone situations (especially around cords and rug edges).

Product 2: Roborock Qrevo Edge S5A Robot...
3.4

Most day-to-day runs are described as smooth with few stops, but the robot can still get caught by cables or a sock in some tests. Lack of chassis lift also limits its ability to self-recover on tall thresholds.

Suction and Airflow
Product 1: Narwal Freo X Ultra Robot...
4.3

Suction is widely described as powerful for a combo unit (often cited around the 8,200 Pa class) with good surface pickup; some reviews still want stronger carpet boost behavior.

Product 2: Roborock Qrevo Edge S5A Robot...
4.4

Strong rated suction (up to 18,500 Pa) and consistently good real-world pickup, even when lab airflow/pressure measures slightly below average. Overall cleaning results on hard floors and rugs are described as above average for the price tier.

Suitability for small spaces
Product 1: Narwal Freo X Ultra Robot...
No score yet
Product 2: Roborock Qrevo Edge S5A Robot...
3.3

The robot itself suits small spaces well thanks to efficient mapping, but the multifunction dock is relatively large. Homes with limited floor space near outlets may need to plan dock placement carefully.

Under-Furniture Pickup
Product 1: Narwal Freo X Ultra Robot...
3.2

Low-profile robot can reach many under-furniture areas, but a few reviewers note occasional avoidance of certain furniture bases or tight clearances.

Product 2: Roborock Qrevo Edge S5A Robot...
4.3

Its relatively low height helps it reach under furniture and low cabinetry where many robots miss dust. At least one real-home test highlights under-cabinet cleaning as a major day-to-day benefit.

Water tank
Product 1: Narwal Freo X Ultra Robot...
3.8

Clean/dirty water tank system works well but can be water-hungry on frequent cleaning—some users report refills every 1–3 days depending on home size and settings.

Product 2: Roborock Qrevo Edge S5A Robot...
4.5

The clean/dirty water tank setup is a key convenience feature; reviewers cite large tanks (around 4 L clean and ~3.5 L dirty in one real-home test) and automatic onboard refills. This enables multiple full clean-and-mop sessions before needing attention.