Compare VIOMI S9 vs. Roborock S7

All robot vacuums

Cleaning Features
	VIOMI S9	Roborock S7+
Photo
Where to buy	Amazon.com$374.89 Amazon.de€129.00 Amazon.co.uk--	Amazon.com$549.99 Amazon.de€455.63 Amazon.caC$1349.99 Amazon.co.uk£758.49 Roborock$409.99
SRR Score	185	230
Mapping / Path planning	Yes	Yes
Mapping Sensor Type	LDS	LDS
High-Precision Map	Yes	Yes
Objects recognition (front camera)	No	No
Recharge & Resume	Yes	Yes
Autocally Docks and Recharges	Yes	Yes
Noise Level	70 dB	67 dB
Display	No	No
Side Brushes (one or two)	1	1
Voice Prompts	Yes	Yes
Suction Power	2700 Pa	2500 Pa
Сleaning Area	320 ㎡ / 3444 ft²	300 ㎡ / 3229 ft²
Dustbin Capacity	300 ml / 10.14 oz	470 ml / 15.89 oz
Disposable dustbag capacity	3 L	3 L
Automatic Dirt Disposal	Yes	Yes
Barrier-cross Height	20 mm / 0.79 in	20 mm / 0.79 in
HEPA filter	Yes	Yes
Washable Filter	Yes	Yes
Mopping Features
Wet Mopping	Yes	Yes
Electric water flow control	Yes	Yes
Water Tank Capacity	250 ml / 8.45 oz	300 ml / 10.14 oz
Vibrating mopping pad	No	Yes
Automatic mop lifting	No	Yes
Auto water tank refilling	No	No
Auto mop washing	No	No
Battery
Battery Capacity	5200 mAh	5200 mAh
Battery life	150 min	180 min
Charging Time	N/A	300 min
Rated Power (Watts)	50 W	68 W
Control
Scheduling	Yes	Yes
IR/RF Remote Control	No	No
Wi-Fi / Smartphone App	Yes	Yes
Wi-Fi Frequency Band	2.4 GHz	2.4 GHz
Amazon Alexa Support	N/A	Yes
Google Assistant Support	N/A	Yes
Magnetic/Optical Virtual Walls	No	No
App Features
Real-time tracking	Yes	Yes
Digital Blocked Areas	Yes	Yes
Zoned cleaning	Yes	Yes
Multi-floor maps	Yes	Yes
Manual movement control	Yes	Yes
Selected Room Cleaning	Yes	Yes
No-mop zones	No	Yes
Sensors
Carpet Boost	Yes	Yes
Anti-drop / Cliff Sensor	Yes	Yes
Dirt Sensor	No	No
Full Dustbin Sensor	No	No
Other Specifications
Weight	3.8 kg / 8.38 lbs	4.7 kg / 10.36 lbs
Width	35 cm / 13.78 in	35 cm / 13.78 in
Height	9.8 cm / 3.86 in	9.65 cm / 3.8 in
In the box		water tank, mopping pad, user manual, AC adapter, auto-empty dock
Release Date	Nov, 2020	Jan 2021
Warranty	12 months	12 months