Narwal Flow vs Roborock Qrevo Slim
Researched by Riley Hart · prices checked Oct 31, 2026
As of Oct 31, 2026, the Narwal Flow costs $1,500 and the Roborock Qrevo Slim costs $1,400, so the Roborock Qrevo Slim is $100 cheaper. Pick the Narwal Flow for hard floor homes that mop often and have pets. Pick the Roborock Qrevo Slim for very low furniture.
- Suction
- 22,000 Pa
- Navigation
- dToF LiDAR inside
- Mopping
- FlowWash track mop
- Runtime
- Up to 190 min
One of the best mopping robots tested, with strong measured suction, zero hair tangles and a dock that washes and dries the track mop. Testers at TechRadar and Tom's Guide found the software and navigation quirky. Skip it if you want a simple app, and compare it against the Flow 2 since the Narwal store showed the Flow out of stock.
Full Narwal Flow review →- Suction
- 11,000 Pa
- Navigation
- StarSight system
- Mopping
- Dual spinning mops
- Runtime
- Up to 180 min
Only worth it if you have very low beds or sofas that other robots cannot reach, since the 3.23 in body has no LiDAR turret. Tech Advisor found it fine for upkeep but weaker on carpet, and it costs more than newer slim Roborocks with stronger suction. Most buyers should look at the Qrevo Edge 2 or CurvX first.
Full Roborock Qrevo Slim review →Side by side
| Narwal Flow | Roborock Qrevo Slim | |
|---|---|---|
| Price | $1,500 | $1,400 |
| 3 year cost | $1,500 | $1,502 |
| Our score | Not scored yet | Not scored yet |
| Rank in Floors | #83 | #81 |
| Status | on sale | on sale |
| Warranty | n/a | 1 year (Roborock US store) |
| Suction | 22,000 Pa (Narwal); Vacuum Wars measured 1.88 kPa against a 0.96 kPa average | 11,000 Pa (Roborock) |
| Navigation | dToF LiDAR inside the body (Narwal); TechRadar saw it push a chair, skip a room and report cleaning 0.0 square meters | StarSight system with solid state 3D ToF LiDAR, optical flow sensor and RGB camera, no top turret (Roborock) |
| Obstacle avoidance | Dual RGB cameras, AI chip and tri laser structured light, 200+ objects (Narwal); Vacuum Wars scored 18 of 24, and TechRadar saw it avoid a shoe, sock and USB cable | 73 object types with 3D sensors and RGB camera (Roborock); Tech Advisor saw it bump a low hearth and swallow a cat toy feather |
| Mopping | FlowWash track mop with warm water at 113F, 7 to 12 N pressure and 12 mm lift (Narwal); Vacuum Wars combined mopping score 268 against a 184 average | Dual spinning mops at 200 rpm on a FlexiArm, 10 mm auto lift, 30 water levels (Roborock, Vacuum Wars); Tech Advisor found dried sauce still sticky |
| Self empty | Yes, 2.5 L dust bag rated for up to 120 days (Narwal US store) | Yes, 2.7 L bag, up to 7 weeks (Roborock, Vacuum Wars) |
| Dock features | Auto empty, mop washing at 113 to 176F, warm air drying, self cleaning; optional auto refill and drain version (Narwal US store); no auto detergent dispenser (TechRadar) | 8 in 1 dock with hot water mop wash, warm air drying, dock self cleaning, auto refill and detachable base (Roborock) |
| Runtime | Up to 190 min (Narwal); Vacuum Wars estimated 2,068 sq ft per charge | Up to 180 min (Roborock spec via Vacuum Wars); 5,200 mAh battery (Roborock) |
| Dustbin | 2.5 L dock bag; Vacuum Wars describes a large robot bin with a removable section | 220 ml (Roborock spec via Vacuum Wars) |
| Height | 95 mm (3.7 in) per Narwal key features and Vacuum Wars; Narwal's spec table lists 107.7 mm | 3.23 in (8.2 cm) (Roborock, Tech Advisor) |
| Pet hair | Vacuum Wars measured 89% flattened pet hair pickup and 0% tangles in its 7 inch hair test | n/a |
| App | Narwal app with up to 4 saved maps, schedules and voice assistant; works with Siri, Alexa and Google Assistant (Narwal US store); TechRadar found it overwhelming with some mistranslations | Roborock app; 2.4 GHz Wi-Fi only; Hello Rocky offline voice control; Alexa, Siri and Google Home; Matter by future update (Roborock) |
| Threshold | 4 cm (1.57 in) (Narwal US store, TechRadar) | Up to 20 mm (Roborock spec via Vacuum Wars) |
| Noise | TechRadar measured 58 dB in quiet mode to 76 dB at top suction; Tom's Guide measured 49 to 74 dB depending on floor | n/a |
| Best for | hard floor homes that mop often and have pets | very low furniture |
| Skip if | you want a simple, glitch free app | you have mostly carpet or want the best value |
Specs are maker claims unless a reviewer is named. Prices from the stores we link, checked daily.
What reviewers found
Narwal Flow
- Vacuum Wars (3.58 Vacuum Wars stars): Measured 1.88 kPa suction, 83% sand removal, 89% flattened pet hair pickup and 0% hair tangle. Combined mopping score was 268 against a 184 average, obstacle avoidance 18 of 24 and estimated coverage 2,068 sq ft per charge. Source
- TechRadar: Called the cleaning superb, especially on carpet, and hot water mopping excellent. Noise was 58 dB in quiet mode and 76 dB at top suction. It pushed a chair, failed to enter a room and once reported 0.0 square meters cleaned. Subscores: Value 4/5, Design 4.5/5, Performance 3.5/5, App 3.5/5. Source
- Tom's Guide: Pickup was 83% overall on tile and 77% on carpet, with 70% to 75% hair pickup. Noise ranged from 49 to 74 dB depending on floor and power. Faults were a tricky app, random cleaning incidents and so so edge vacuuming. Source
Roborock Qrevo Slim
- Tech Advisor: Mostly good on vinyl but missed oats and flour, and left flour and oats on mid pile carpet even after a second max run. It bumped a low hearth and swallowed a large feather, but docked reliably and hair did not wrap the brushes. Source
- TechRadar: Measured noise from about 60 dB on Quiet to 70 dB on Max+, and 44 to 58 dB when mopping. Turbo picked up all the flour and nearly all the oats, while Quiet missed many oats. Hot sauce came off after two passes. It handled thick rugs and raised thresholds but missed edges in zone mode and the area in front of the dock. Source
- Vacuum Wars (3.21 Vacuum Wars stars): Picked up 80% of 2.5 inch pet hair on carpet against a 78% LiDAR robot average and scored 76% on carpet deep cleaning, the best among its peers. Scored 110 on the dried stain test and covered about 1,244 sq ft per charge. It mapped the test home in about 5 min. Raw suction and airflow readings were below average. Source
Pros and cons
Narwal Flow
Pros
- Excellent mopping, 268 combined score at Vacuum Wars
- No hair tangles in Vacuum Wars test
- Strong measured suction
- Long runtime, about 2,068 sq ft per charge
- Climbs 4 cm thresholds
Cons
- Navigation bugs reported by TechRadar and Tom's Guide
- Complex app with mistranslations
- No auto detergent dispenser
- High price
- Out of stock at Narwal US store on 2026-10-30
Roborock Qrevo Slim
Pros
- Very low 3.23 in body
- Extending side brush and mop for corners
- Offline Hello Rocky voice control
- Hair did not wrap the brushes in testing
- Full self cleaning dock
Cons
- Lower 11,000 Pa suction than newer models
- Weaker on carpet in testing
- Missed small obstacles
- High $1,399.99 price
- Sold out on the Roborock US store on 2026-10-30
Questions buyers ask
Which is better, the Narwal Flow or the Roborock Qrevo Slim?
Pick the Narwal Flow for hard floor homes that mop often and have pets. Pick the Roborock Qrevo Slim for very low furniture.
Which is cheaper?
The Roborock Qrevo Slim at $1,400, versus $1,500 for the Narwal Flow, checked Oct 31, 2026. Over 3 years with running costs: $1,500 vs $1,502.
What is the difference between the Flow and the Qrevo Slim?
Suction: 22,000 Pa (Narwal); Vacuum Wars measured 1.88 kPa against a 0.96 kPa average on the Flow, 11,000 Pa (Roborock) on the Qrevo Slim. Navigation: dToF LiDAR inside the body (Narwal); TechRadar saw it push a chair, skip a room and… on the Flow, StarSight system with solid state 3D ToF LiDAR, optical flow sensor and RGB camera, no… on the Qrevo Slim. Obstacle avoidance: Dual RGB cameras, AI chip and tri laser structured light, 200+ objects (Narwal); Vacuum… on the Flow, 73 object types with 3D sensors and RGB camera (Roborock); Tech Advisor saw it bump a… on the Qrevo Slim.
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