Viomi V2 vs Roborock S6: the Differences Explained

By Natalie Red·Updated: Nov 13, 2019· 9 min read

The Roborock S6 and Viomi V2 are two newest robot vacuums released recently that look very promising considering the price and the given features. Both beasts have great features such as strong suction, wet mopping, lidar-based smart navigation, app control which allows you to set restricted areas and perform zoned cleaning. Recently, we have an opportunity to test and review the Roborock S6 and I want to tell you that it a very powerful and smart device. Despite the low price of $389 for the Viomi V2, is it a better choice than the more expensive Roborock S6 with a $549 price tag ($499 with the coupon code GBSTSDJS6)? In this article, I will try to compare the main features of both robot vacuum cleaners, show you the pros and cons of each model.

Viomi 2 vs. Roborock S6: which one is better?

The Roborock S6 has everything we loved in the previous S5 model and some improved and new features. It has a better ARM processor than the previous model and much faster and accurate navigation, it knows your home and where exactly it should clean with an improved water tank and advanced mapping. 

The Viomi V2 is the first device in Viomi model line that uses an LDS sensor (or lidar) to scan your house and to build a precise map. And if Roborock knows how to produce a decent robot cleaner since they already made a few successful robot vacuums, Viomi is a bit new in this area.

Both models can mop and sweep, support zoned cleaning and restricted areas, build an accurate map, etc. So are there any other things to consider buying the Viomi V2 over the Roborock S6? What makes the Roborock S6 one of the smartest in this price segment?

Roborock S6 vs. Viomi V2 comparison chart

Specs Roborock S6
Roborock S6
Viomi 2 Robot vacuum
Viomi V2
Suction power 2,000 Pa 2,150 Pa
Airflow velocity *(our measurement) 15 CFM 23 CFM
Battery life 150 min 120 min
Recharge & Resume yes yes
Battery capacity 5,200 mAh 3,200 mAh
Mapping technology Lidar + SLAM Lidar + SLAM
Multi-floor storing yes (up to 3 maps) no
Wet mopping yes yes
Water supply adjustment 2 modes (switch on the water tank) 3 modes (can be selected in the app)
Water tank size 150 ml 560 ml
Dustbin capacity 500 ml 600 ml
Climbing ability 0.79 in / 20 mm 0.79 in / 20 mm
Noise level 45-64 dB 47-69 dB
Alexa/Google Home support yes yes
Washable HEPA filtration yes yes
Restricted (blocked) areas yes yes
Zoned cleaning yes yes
Carpet boost yes no
Sensors 14 10
Room recognition yes yes
Separate room cleaning yes yes
Warranty 24 months 12 months
Price $549 Gearbest
$649 Amazon
$389.99 GearBest

Features the Viomi V2 and Roborock S6 share

  • HEPA filtration

Both are equipped with a washable HEPA filter and are safe for those who suffer from asthma and allergy. 

  • Real-time tracking

Both can be tracked in real-time. In the app, there is an ability to watch the robot building a map.

Viomi (Mi Home beta app) vs Roborock app: main screen comparison
Viomi (Mi Home beta app) vs Roborock app: main screen comparison
  • Water level control

For the Viomi V2, you can set the level of water dripping depending on your mopping needs. For everyday cleaning choose a low volume if you need to remove stubborn stains and make the robot mop the whole floor - set the high volume settings.

As for the Roborock S6, you can adjust the dripping water speed by toggling switch on the water tank.

Roborock S6 changing water dripping speed

  • Great climbing ability

Each of them can cross a 20 mm obstacle; thus they are perfect for thicker carpets.

  • Restricted Areas / Zoned cleaning

Both models support setting restricted areas, zoned cleaning, and selected room cleaning option.

Viomi V2 (left) and Roborock (right): virtual walls and no-go zones settings
Viomi V2 (left) and Roborock (right): virtual walls and no-go zones settings
Zoned cleaning setting
Zoned cleaning setting

Viomi V2 and Roborock S6: bottom view

Roborock S6 glance

Roborock S6: what in the box

The Roborock S6 took all the great features users loved about the Roborock S5 and added new options.

It delivers the same 2,000 Pa of suction, has the same 20 mm clearance and dustbin size but got quieter than the older model.

The Roborock S6 automatically divides the created map into the rooms after finishing cleaning

The robot vacuum cleaner identifies carpet surface and boosts suction power providing deeper cleaning.

The app supports restricted areas, zoned cleaning and the newest feature - scheduling the robot to work within a certain room at a specific room.

The robot is also perfect for bigger houses thanks to the multiple mapping storage.

Get the Roborock S6 if you...:

  • Live in a big house. Thanks to the longest-lasting battery and resumption the Roborock is perfect for big homes.
  • Your home is mostly covered with carpets. Because of the strong suction, good clearance and carpet identification, the S6 provides deeper cleaning on thicker carpets.
  • Have a pet. Even though the S6 does not have a big dustbox, it's cleaning brush has detachable parts that make cleaning it from pet hair easier. And strong suction picks up pet hair even on thicker carpets.
  • Live in a multiple level house.
  • Want a powerful robot vacuum cleaner that does not make lots of noises.
  • Someone in your family or you suffer from an allergy.
  • Want mopping. Yes, the Roborock S6 has a smaller water tank but if you don't have lots of space with no carpets - the newest water level control and a few types of the mopping pads would be very useful.

Viomi V2 glance

Viomi V2: what in the box

The robot is equipped with ten sensors that help it to navigate including the LDS laser that scans the surroundings to build the map of the floor which makes navigation more efficient.

Viomi claims the Viomi V2 has the highest suction power of 2,150 Pa when Roborock claims their S6 model has 2,000 Pa of suction power.

The Viomi is equipped with a big water tank and dustbin. The big dust container is better for pet owners.

Still not the biggest and we would recommend getting it empty after every cleaning, but at least you don't have to clean the dust and dirt in the middle of the cleaning cycle.

In mopping mode, the Viomi follows a Y-shape path thanks to which it goes over the same spots a few times. The app allows switching water dripping level from low to high depending on your needs. I would recommend setting it on a high level no matter you want the robot to do heavy mopping or just remove dust.

The Viomi V2 follows a Y-shape path in mopping mode and supports water flow control in the app.

The Viomi V2 is great for homes with mostly bare flooring thanks to the 560 ml water tank. Most of the robot vacuums have 150-300 ml containers. Two types of mop cloths are suitable for different mopping needs.

Viomi V2 Mopping test

The app supports zoned cleaning and digital virtual walls which is presented in a few models that are based on the LDS sensor.

The app also has a secondary cleaning feature which means the robot will go clean the same area twice. We have not seen it in any other robot vacuum before, some of them allow setting cleaning twice or three times when choosing zoned cleaning while the Viomi can vacuum the whole place twice if needed. 

Get the Viomi V2 if you...:

  • Don't have carpets and want the mopping feature the Viomi V2 would be better since it covers more when mopping before the container gets dry.
  • Have more than one pet. The container is big enough to hold more pet hair.
  • Your home is covered with thin carpets.
  • Don't want to spend more on the Roborock S6.
  • Or anyone in your family suffers from an allergy.
  • Want to have an ability to block the robot from going to certain places.

Price & where to buy


Wrap It Up

Both models are great at cleaning carpets and bare flooring. However, since we got to test both of them there is something you should know about. 

The Viomi V2 has a raw app. It has some features that don’t work and the app itself is not intuitive. Even though the Viomi supports some nice options the Roborock S6 does not, it makes the robot not suitable for those who actually are going to use the app. We hope the app will get some updates and thing would be better.

On the other hand, the Roborock app has more features, it stores three maps and can be scheduled to work in a particular room. Overall, the app is more smooth and user-friendly.

Also, we put both of them through a heavy test with sand on a medium-pile carpet and figured out the Viomi V2 was not able to pick up most of the sand. Of course, it is an extreme condition and you will not have your place this dirty. In real life, the Viomi V2 does a decent job on carpet so you might not notice the difference between the two.

The cleaning brush is a thing to consider too especially if you have pets or long hair. I do have long hair and the Viomi non-detachable roller is a bit of a headache to me. Don’t get me wrong, the Roborock S5 has a similar brush but since hair tends to get stuck in the edges it becomes challenging to get it untangled. Unlike the Roborock S6 brush that is disassembled and much easier to maintain.

Mopping is an option many people want a robot vacuum to have. The Roborock S6 has a smaller water tank but it can do mopping and sweeping at the same time so you don’t have to vacuum first. Theoretically, the Viomi V2 also can do both things at a time by attaching mopping pad and a cloth but in this case, you need to damp the cloth manually and it won’t be wet for too long. Because of the Y-shape and water level control in the app, the Viomi performs better at mopping. But if you have a big cleaning area without carpets, the Viomi would be a better choice. The Viomi might be one of the best robot mops on the market to date.

Also, keep in mind that the Roborock S6 is much quieter than the Viomi V2. The Viomi V2 reminds me of the Roborock S5 that is noisy in MAX mode. While the Roborock S6 can clean in the same room as you are and won’t distract you, the Viomi will definitely be more noticeable.

To Conclude

The Viomi V2 is the right option for those who are looking for a robot vacuum under $500 with strong suction, efficient mopping, and good build quality. The robot is ideal for average and bigger homes with thin and some medium-pile carpets. If you don’t mind the app that might not be as polished as the Roborock app, and none of your family has long hair, get the Viomi. If you want better mopping, get the Viomi. The Viomi V2 is one of the best mopping robots that also can do the vacuuming. The Viomi V2 is a decent vacuum cleaner that performs great at mopping but is not the best for pet and long human hair.

Roborock S6 is the best option for those who live in a big house with more than one level. It is quiet and does a superb job on carpets. If you are looking for a premium robot vacuum that would have the best navigation in the industry, go with the Roborock S6. The app is easy to use and very minimalist. If you have pets, you will love the new cleaning brush with detachable parts. The Roborock S6 is ideal for large homes, thin and medium-pile carpets, and bare flooring. If you want some additional options like carpet identification, if you live in a multiple-store house and are ready to spend some extra — go with the Roborock S6


Comments ()

  1. Jeff Taylor
    #      +1
    I own the viomi v2. It cleans great, but there literally is no app support. At least in the US. It isn't supported by the Viomi robot or Mi home app. Very disapointing. I would stay away from this model until they have software support
    reply   
    1. Natalie Red
      #      0
      Hi Jeff,

      Yes, the Viomi V2 looks so good and has to perform well, however, the software support seems raw and needs improvements.

      We hope, the company will fix it as soon as possible because, with no app, this robot lacks many high-end features many consumers paid for.

      Natalie
      reply   
      1. Chung Do
        #      0
        MI home app support now. but some feature doesn't work because you get standard Viomi v 2 all feature work on viomi v2 pro
        reply   
      2. Willem
        #      0
        All sounds good! Just one question, in the text it says 2 times that the Viomi v2 has multi level support, yet in the table on top it says it doesn't support multi-level maps…

        which is true?
        reply   
        1. Natalie Red
          #      0
          Hi Willem,

          There is not much information about this model. From what I understand by reading other reviews, the Viomi V2 only saves one map, the way Roborock S5 does. We will have a chance to test it soon and know for sure.

          So if you own a multiple-level house, the Viomi V2 will have to rebuild a map every time when cleaning the second floor. Thanks for noticing, the article has been fixed.

          Natalie

          reply   
          1. Willem
            #      +1
            Thank you for letting me know!
            reply   
            1. Chung Do
              #      0
              Viomi v2 pro have option multiple map saving
              reply   
            2. Chung Do
              #      0
              we don't know yet. hope the app add this option in the future I bough this vacuum robot for that option. as it said multi map only work on viomi v2 PRO
              reply   
            3. Stas
              #      0
              What is the difference between Roborock S6 and Roborock T6? Are their side brushes similar? And do both of these robots have microfiber (not disposable) mops in the box?
              reply   
              1. Иван
                (edited})
                #      0
                Нет никакой разницы!
                это одно название: Roborock S6 (T6) Vacuum Cleaner.
                T6 это для Китая, S6 для других стран.
                в комплекте идут две тряпаки многоразового использования,
                и 10 шт одноразового.
                reply   
              2. kate
                #      +1
                Hi,
                Can anyone advise does Viomi V2 has the functions to pickup long hair and cut into small pieces so that it will not tangle around the brushes or the devices?
                reply   
                1. Natalie Red
                  #      +1
                  Hi, Kate :)

                  If you are looking for a robot that handles hair very well, the Viomi V2 might not be the best. The brush is solid, hair clogged on the edges and not very easy to get it clean (see the pic down below).



                  It is not bad either, but it will take some time to maintain the roller.

                  The Roborock S6 though has a disassembled brush and sucks up most hair straight into the bin. I would say, the Roborock S6 is one of the best solutions for pet hair among those robots that don't have silicone brushless rollers.
                  reply   
                2. HGST
                  #      0
                  In the comparison table you said both have room recognition and yet you wrote in Why buy S6 — that it has room recognition and Viomi V2 doesnt. I think you wrote this review not base on actual use but on specs
                  reply   
                  1. Natalie Red
                    #      0
                    When the article was written the Viomi V2 didn't have the room recognition option. I am using a beta version of the Mi Home which has this feature however, it does not allow scheduling the robot to clean a specific room. The Roborock app does. I believe it will be released soon so everyone can use it as well.

                    Anyways, the article has been fixed.
                    reply   
                    1. Mat
                      #      +1
                      Hey Natalie, Viomi has now room recognition and also option to choose&clean.
                      reply   
                      1. Natalie Red
                        (edited})
                        #      0
                        Thank you, Mat. Fixed that :)
                        reply   
                  2. chris
                    #      0
                    Are there any updates on the state of the application of the viomi? did the company update the app, improved the User Interface, or have the released the product and abandon it? my thoughts on the two products above is that the viomi is a better product (for me), but the application problems deter me from buying one.
                    reply   
                    1. Michael Fisher
                      #      0
                      Hi Chris,
                      Unfortunately, the beta app which you can see on the screenshots above, is not released yet. I'm very disappointed, a few months passed and they still can't release it. Even this beta app has pure English localization and not as smooth and stable as the Roborock app.

                      The Viomi V2 has a much better mopping feature, and this is only one significant advantage compared to the S6 (okay, another one is price).

                      Our tests on carpets and bare floors show that the Viomi is much worse than the Roborock S6 in terms of picking up sand and dirt. Also, the Roborock S6 has more efficient navigation (it spends 37 min to clean the entire apartment when the Viomi needs ~50 minutes to finish the same apartment).
                      reply   
                    2. Viki
                      #      +1
                      Hello I bought this Viomi robot in August in some Chinese website. They send to me to Europe. All was working fine for 2 month but in beginning of October App lost maps and now App doesn't update to new version I tried everything but still does not update so it means robot work only when you press the button. So does anybody has same issue? And resseler only appologising and can't do anything. After that issue I check all forums and many people has same issue. So definitely do not reccomend to buy this robot from China. But if anyone solved the issue with App please share your experience, overall robot is very good in cleaning and mopping but without App you can't do anything.
                      reply   
                      1. Michael Fisher
                        #      0
                        Hi Viki,
                        Are you using the Viomi Robot app or Mi Home app?
                        reply   
                      2. Viki
                        #      0
                        Hi Michael,
                        Yes I am using Mi home App (Xiaomi Home) it was in instructions indicated this App when I received robot. Now its asking to update from current version 3.4.5_0021 to new 3.5.3_0030 and when I press update it always fails and says update time out. I tried all methods remove App reinstall and nothing. Tried on different models of phones always same error also even created new robot account. And no support from Viomi tech.
                        reply   
                        1. Michael Fisher
                          #      0
                          Sorry, have no idea how to fix it. I've seen a lot of comments on Facebook regarding the firmware update issue, some users fixed it by reinstalling the app, others recommend to reboot the robot or disconnect and reconnect the battery. Anyway, I'll let you know if I find how to fix it.
                          reply   
                        2. Leo
                          #      0
                          Hi! I have a problem on a Xiaomi Mijia Robot STYJ02YM, its basically identical vacuum to Viomi V2. I have this problem after an update and my vacuum telling me «water tank(reservoir) is not installed, please install water reservoir», but I inserted 2 in 1 box inside and it tells me «2 in 1 water tank is well installed».
                          can somebody have a suggestions what to do? Thank you very much, appreciate it!
                          reply   

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