Compare VIOMI S9 vs. Roborock S7

VIOMI S9Roborock S7+
PhotoVIOMI S9Roborock S7+
Where to buy
SRR Score 185230
Mapping / Path planning YesYes
Mapping Sensor Type LDSLDS
High-Precision Map YesYes
Objects recognition (front camera) NoNo
Recharge & Resume YesYes
Autocally Docks and Recharges YesYes
Noise Level 70 dB67 dB
Display NoNo
Side Brushes (one or two) 11
Voice Prompts YesYes
  Cleaning Features
Suction Power 2700 Pa2500 Pa
Сleaning Area 320 / 3444 ft2300 / 3229 ft2
Dustbin Capacity 300 ml / 10.14 oz470 ml / 15.89 oz
Disposable dustbag capacity 3 L3 L
Automatic Dirt Disposal YesYes
Barrier-cross Height 20 mm / 0.79 in20 mm / 0.79 in
HEPA filter YesYes
Washable Filter YesYes
Mopping Features
Wet Mopping YesYes
Electric water flow control YesYes
Water Tank Capacity 250 ml / 8.45 oz300 ml / 10.14 oz
Vibrating mopping pad NoYes
Automatic mop lifting NoYes
Auto water tank refilling NoNo
Auto mop washing NoNo
  Battery
Battery Capacity 5200 mAh5200 mAh
Battery life 150 min180 min
Charging Time N/A300 min
Rated Power (Watts) 50 W68 W
  Control
Scheduling YesYes
IR/RF Remote Control NoNo
Wi-Fi / Smartphone App YesYes
Wi-Fi Frequency Band 2.4 GHz2.4 GHz
Amazon Alexa Support N/AYes
Google Assistant Support N/AYes
Magnetic/Optical Virtual Walls NoNo
  App Features
Real-time tracking YesYes
Digital Blocked Areas YesYes
Zoned cleaning YesYes
Multi-floor maps YesYes
Manual movement control YesYes
Selected Room Cleaning YesYes
No-mop zones NoYes
  Sensors
Carpet Boost YesYes
Anti-drop / Cliff Sensor YesYes
Dirt Sensor NoNo
Full Dustbin Sensor NoNo
Other Specifications
Weight 3.8 kg / 8.38 lbs4.7 kg / 10.36 lbs
Width 35 cm / 13.78 in35 cm / 13.78 in
Height 9.8 cm / 3.86 in9.65 cm / 3.8 in
In the box water tank, mopping pad, user manual, AC adapter, auto-empty dock
Release Date Nov, 2020Jan 2021
Warranty 12 months12 months

Features Comparison Chart