Price unavailable right now
Data from the official Narwal and Roborock sites.
2026 verdict
Two self-emptying flagships, and the Roborock Saros 20 Sonic brings twice the suction.
It is rated at 36,000 Pa against 18,000 Pa on the Narwal Freo Z10 Ultra, runs 190 minutes against 150, stands 79.8 mm tall against 109.6 mm, and joins 5 GHz Wi-Fi and Bluetooth where the Narwal Freo Z10 Ultra is 2.4 GHz only. The Roborock Saros 20 Sonic is also the one that adds Apple Home, SmartThings, Home Assistant and Matter, and its dock carries a slightly larger 2.7 L dust bag. The Narwal Freo Z10 Ultra is the more affordable and the better reviewed of the two, and owners rate it for quiet running and camera-based obstacle avoidance. Pick the Roborock Saros 20 Sonic for power and platform reach, and the Narwal Freo Z10 Ultra for a quieter, cheaper pet-aware clean.
Works with
Connectivity
- Wi-Fi 2.4 GHz
vs
Winner
Price unavailable right now
Connectivity
- Wi-Fi 2.4/5 GHz
- Bluetooth
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The biggest differences
Where these two are furthest apart, and by how much.
- Suction Power2×Roborock Saros 20 Sonic36000Pa vs 18000Pa
- Battery Life+27%Roborock Saros 20 Sonic190 minutes vs 150 minutes
| Feature | Narwal Freo Z10 Ultra | Roborock Saros 20 Sonic | Winner |
|---|---|---|---|
| Rating | 4.1 | 4.2 | Roborock Saros 20 Sonic |
| Battery Life | 150 minutes | 190 minutes | Roborock Saros 20 Sonic |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth | Roborock Saros 20 Sonic |
| Integrations | Google Home, Alexa | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Roborock Saros 20 Sonic |
| Suction Power | 18000Pa | 36000Pa | Roborock Saros 20 Sonic |
| Dock Dustbin Capacity | 2.5L | 2.7L | Roborock Saros 20 Sonic |
| Local Control | NO | YES | Roborock Saros 20 Sonic |
| Auto Recharge | YES | YES | Tie |
| Navigation Type | Laser (LiDAR) | Laser (LiDAR) | Tie |
| Obstacle Detection | YES | YES | Tie |
| Cliff Detection | YES | YES | Tie |
| Multi-Room Mapping | YES | YES | Tie |
What the differences mean
Suction
The Roborock Saros 20 Sonic is rated at 36,000 Pa against 18,000 Pa on the Narwal Freo Z10 Ultra. On bare floors both are strong, but the gap matters on carpet and thick rugs, where some Narwal owners report the robot struggling rather than lifting embedded dirt.
Height
The Roborock Saros 20 Sonic is 79.8 mm tall against 109.6 mm for the Narwal Freo Z10 Ultra, so the Roborock reaches under low sofas and beds the Narwal cannot. That is often the difference between a cleaned strip of floor and a permanent skip.
Runtime
The Roborock Saros 20 Sonic is rated for 190 minutes against 150 on the Narwal Freo Z10 Ultra, useful when a combined vacuum and mop run in a large home already takes hours and a top-up would otherwise interrupt it.
Smart home and Wi-Fi
The Roborock Saros 20 Sonic supports Apple Home, SmartThings, Home Assistant and Matter and joins 5 GHz networks, plus Bluetooth. The Narwal Freo Z10 Ultra is 2.4 GHz only, with Alexa and Google Home, and its Home Assistant support is not documented.
Dock
Both docks empty the bin and wash and dry the mops. The Roborock Saros 20 Sonic also doses detergent on its own and carries a 2.7 L dust bag, against the 2.5 L of the Narwal Freo Z10 Ultra, whose automatic detergent dispensing is not documented.
Which one to buy if
- you have thick rugs or a lot of carpet
The Roborock Saros 20 Sonic has twice the suction, and Narwal owners report trouble on thick rugs.
- your smart home runs on Apple Home, SmartThings or Matter
Only the Roborock Saros 20 Sonic supports them.
- quiet running matters more than raw power
Owners of the Narwal Freo Z10 Ultra call it the quietest robot they have owned.
- you have pets and mostly hard floors
The Narwal Freo Z10 Ultra is praised for steering around pet accidents and costs less.
Price unavailable right now
- - Rating: 4.1 vs 4.2
- - Battery Life: 150 minutes vs 190 minutes
Winner
Price unavailable right now
- + Rating: 4.2
- + Battery Life: 190 minutes
- + Connectivity: 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth
What owners say
The Narwal Freo Z10 Ultra is the only robot with owner reviews in this pair. Quietness comes up almost as often as cleaning quality, with owners running it in crowded houses calling it the quietest robot they have owned. They also praise mapping and obstacle avoidance for handling corners and edges better than the robots they replaced, hot-water mop washing and automatic drying that solved the musty-pad problem, and a base with enough dust capacity to be hands-off for months. Owners with large shedding dogs say it keeps wood, tile and area rugs clean. The complaints recur: full vacuum and mop runs that stretch over hours with errors, trouble climbing thicker area rugs, at least one early mop-pad failure, and slow customer service replies.
Frequently Asked Questions
Roborock vs Narwal: which is better, the Roborock Saros 20 Sonic or the Narwal Freo Z10 Ultra?
The Roborock Saros 20 Sonic, for double the suction, longer runtime, a slimmer body and support for Apple Home, SmartThings, Home Assistant and Matter. The Narwal Freo Z10 Ultra is the lower priced flagship and is praised for quiet, pet-aware cleaning.
What is the biggest difference between the Narwal Freo Z10 Ultra and the Roborock Saros 20 Sonic?
Suction and smart-home support. The Roborock Saros 20 Sonic is rated at 36,000 Pa and joins Matter, Apple Home and SmartThings, while the Narwal Freo Z10 Ultra is rated at 18,000 Pa and works with Alexa and Google Home.
Do both robots wash and dry their mops?
Yes. The Narwal Freo Z10 Ultra and the Roborock Saros 20 Sonic both have docks that empty the dustbin and wash and dry the mops. The Roborock also doses detergent on its own.
Which fits under lower furniture?
The Roborock Saros 20 Sonic, at 79.8 mm tall against 109.6 mm for the Narwal Freo Z10 Ultra.
Who should buy the Narwal Freo Z10 Ultra?
Pet owners and families with mostly hard floors who want a quiet robot with smart obstacle avoidance and hot-water mop washing, for less than a top Roborock.
Who should buy the Roborock Saros 20 Sonic?
Buyers with carpets, thick rugs or low furniture who want the most suction and support for Apple Home, SmartThings, Home Assistant or Matter.
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