Both of these use roller mops and dual-sensor navigation, so the decision comes down to how they handle obstacles and how much automation you want built into the dock. The Narwal Flow clears taller thresholds and cords (40 mm versus 20 mm), pulls 22,000 Pa of suction, and backs it all with a three-year warranty. The Roborock Qrevo Curv 2 Flow counters with a faster-spinning roller mop, more downward mop pressure, lifting brushes that keep hair from tangling on carpet, and a self-cleaning dock.
Roller mops are still the newest mopping technology on the market, and here are two robots that both use one. That shared foundation makes this matchup unusually specific: instead of arguing about whether spinning pads beat vibrating ones, the real questions are how hard each roller presses, how well each robot gets over obstacles, and how much of the maintenance the dock handles on its own. The Narwal Flow leans on navigation and suction. The Roborock Qrevo Curv 2 Flow leans on mechanical extras like liftable brushes and a self-cleaning dock. And the Narwal happens to be the cheaper of the two.
Narwal Flow
out of 10Roborock Qrevo Curv 2 Flow
The Narwal Flow comes out ahead overall at 9.1 versus 8.1. Its biggest lead is navigation, 9.0 against 7.6, which lines up with its taller 40 mm obstacle clearance. Cleaning goes 7.8 to 6.7 in the Narwal's favor, and value lands at 9.3 versus 8.6 since it costs less. The Roborock takes features by a hair, 9.7 to 9.5, thanks to extras like liftable brushes and off-peak charging.
Obstacle handling separates these two quickly. The Narwal Flow climbs over 40 mm obstacles, double the Roborock's 20 mm, which matters in homes with tall thresholds, thick rug edges, or a floor that collects toys and charging cables. Mopping goes the other direction: the Roborock's roller spins at 220 RPM against the Narwal's 110 RPM and presses down with 15 N versus 12 N, so it scrubs harder on dried spills. Suction favors the Narwal at 22,000 Pa to 20,000 Pa, though the Roborock's dual rubber and bristle brush plus its liftable main and side brushes help it avoid hair wrap on carpet. Warranty coverage is three years for the Narwal, one for the Roborock.
The Narwal Flow pulls more air at 22,000 Pa versus 20,000 Pa, but the Roborock's dual rubber-and-bristle brush setup and 325 mL onboard dustbin give it an edge on mixed flooring and longer runs between empties.
Both use roller mops, the newest and most effective mopping approach, but the Roborock runs its roller at 220 RPM with 15 N of pressure against the Narwal's 110 RPM and 12 N. It also lifts the mop 15 mm off carpet versus 12 mm.
For homes with a shedding dog or cat, the Narwal Flow's 22,000 Pa of suction pulls hair out of rug fibers a bit more aggressively than the Roborock's 20,000 Pa.
Both pair LiDAR with AI, cameras, 3D structured light, and an LED for low-light obstacle spotting, so the difference is physical: the Narwal clears 40 mm obstacles while the Roborock tops out at 20 mm. That's the gap between rolling over a raised threshold and getting stuck at it.
Both docks empty the robot's dustbin automatically and handle mop maintenance, so neither asks much of you day to day. The Roborock adds a self-cleaning function for the dock's own tray.
The Narwal Flow carries the bigger battery at 6,400 mAh and runs up to 190 minutes on a charge. The Roborock's 5,200 mAh pack is smaller, but it supports off-peak charging so it tops up when electricity rates are lower.
Both handle voice control, no-go zones, multi-level maps, and smart obstacle avoidance. The Roborock spells out its support for built-in voice commands plus Amazon Alexa, Google Assistant, and Apple.
| Feature | Narwal Flow | Roborock Qrevo Curv 2 Flow |
|---|---|---|
| Main Brush Type | Combo (bristle & rubber) | Dual (rubber & bristle) |
| Battery Life | 6,400 mAh | 5,200 mAh |
| Liftable Main Brush | No | Yes |
| Liftable Side Brush | No | Yes |
| Mop Moisture Levels | Adjustable | 30 |
| Mop RPM | 110 RPM | 220 RPM |
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Go with the Narwal Flow if obstacle-heavy floors, pet hair, and a longer warranty top your list, and you'd like to spend less. Pick the Roborock Qrevo Curv 2 Flow if harder mop scrubbing, liftable brushes for carpet, and a self-cleaning dock matter more than clearing tall thresholds.
