KOIOS 4-In-1 vs. Chefman Vegetable Slicer 6-in-1 Side-by-Side Comparison

Tina Pham
Tina Pham
Reviewer
Nguyen Ntk
Nguyen Ntk
Visual Specialist
Reviewed
Our recommendations are made independently through research and testing following our review procedure. We may receive commissions from purchases made via our links at no additional costs to you.
Tested Using Methodology v1.0
Updated Nov 28, 2022
Tested Using Methodology v1.0
Updated Dec 1, 2022
KOIOS 4-In-1 Immersion Blender Review
Chefman Vegetable Slicer 6-in-1 Immersion Blender Review
Blender type
immersion
immersion
Power
800W
300W

Our Verdict

8.0
Overall Score
  • Performance (50%)
    7.9/10
  • Design (20%)
    7.6/10
  • Usability (30%)
    8.3/10
6.6
Overall Score
  • Performance (50%)
    5.8/10
  • Design (20%)
    6.8/10
  • Usability (30%)
    7.8/10

The two are basic, mid-range immersion blenders. In our efficiency testing, however, the KOIOS 4-in-1 outperformed the other. Compared with the Chefman 6-in-1, it blended frozen fruits faster and produced more silky pureé. It also ground nuts more evenly, churning out a serving of milk that was apparently richer in almond flavor.  

Design-wise, they are pretty evenly matched, with reliable build quality for daily use. Still, we mostly agree the KOIOS 4-in-1 looks more catchy. Its design also allows the motor to run smoothly and is more comfortable to use on tough blends. In conclusion, if you have to choose between these models, we’d like to recommend the KOIOS 4-in-1 over the Chefman 6-in-1.

Performance

7.9
Performance Scores
  • Hot Soup Purée (35%)
    7.5/10
  • Frozen Fruit Smoothie (30%)
    7.8/10
  • Mayonnaise (15%)
    9.8/10
  • Almond Milk (15%)
    7.5/10
  • Whipped Egg-Whites (5%)
    7.0/10
5.8
Performance Scores
  • Hot Soup Purée (35%)
    5.0/10
  • Frozen Fruit Smoothie (30%)
    5.0/10
  • Mayonnaise (15%)
    9.0/10
  • Almond Milk (15%)
    5.0/10
  • Whipped Egg-Whites (5%)
    10/10
7.5

Hot Soup Purée

5.0
The KOIOS 4-in-1 Soup
KOIOS 4-In-1 Hot Soup Purée 1
  • Pureeing Time: 30 seconds
  • Result: Slightly Chunky
  • Suction: No

None of the low-range blenders we tested could yield the silkiest puree in 30 seconds, but we think the KOIOS’ results will still be acceptable to most home cooks.  In particular, the soup looked silky but when we ran it through a strainer, too many tiny bits were left behind. Nevertheless, we were still satisfied with this blender, given its consistency and smooth operation.

Chefman Vegetable Slicer 6-in-1 Immersion Blender Hot Soup Purée
Chefman Vegetable Slicer 6-in-1 Immersion Blender Hot Soup Purée
  • Pureeing Time: 30 seconds
  • Result: Slightly chunky
  • Suction: Slightly

We allowed the Chefman 6-in-1 30 seconds worth of runtime for this test and found that it worked just slightly above average for making a purée of root veggies. Our pumpkins and carrots were blended evenly so the soup came out creamy enough to satisfy us. That said, a smattering of celery fibers still remained unprocessed, making the soup coarser than a restaurant-style dish. It might create a smoother texture with more blending time, so this blender is not a bad choice overall.

7.8

Frozen Fruit Smoothie

5.0
The KOIOS 4-in-1 Smoothie
KOIOS 4-In-1 Immersion Blender Smoothie 3
  • Blending Time: 1 min 20 secs
  • Result: Slightly Coarse
  • Suction: No

The manufacturer recommends this blender not be used to process frozen fruits. That fact made us skeptical about its overall capability. After much deliberation, we decided to stick to the initial plan, putting it through our frozen smoothie test anyway. To our surprise, its result was nearly the same as that produced by the Vitamix 5-speed immersion blender.

In less than a minute and a half, it churned out a frozen smoothie that was flavorful enough to entice our taste buds. The drink didn’t have a velvety smoothness; it was a bit grainy since the kale wasn’t entirely liquified. Despite that, it was still a sweet, creamy combination that we loved to sip on.

Chefman Vegetable Slicer 6-in-1 Immersion Blender Smoothie
Chefman Vegetable Slicer 6-in-1 Immersion Blender Smoothie 1
  • Blending Time: 2 mins 30 secs
  • Result: Smooth
  • Suction: Slightly

We were skeptical whether this blender had enough power to churn through solid ingredients like frozen fruits. In the end, however, it did surprisingly well. It was hard not to notice tiny flakes of kale in the final result, but most of us agree that they didn’t harm the smoothie’s texture.

The trade off was blending time. While sporting the same motor power as its counterparts, such as the Braun MutiQuick-5 or the BELLA 10-Speed, the Chefman  6-in-1 somehow took a full minute more to create equivalent results. Blenders that work faster create a creamier texture because the icy fruit doesn’t have a chance to thaw. The Chefman’s smoothie tasted more diluted.

9.8

Mayonnaise

9.0
The KOIOS 4-in-1 Mayonnaise
  • Emulsifying Time: 1 min 10 secs
  • Result: Velvety
  • Suction: No

The KOIOS made short work of incorporating egg yolks and canola oil, churning out a harmonious texture in just over one minute. Apart from being one of the fastest, it was also among the few blenders in our test that produced exceptionally smooth emulsification. Our mayonnaise came out thick, creamy, and spreadable. For such a low-priced hand blender, this performance could hardly have been better.

Chefman Vegetable Slicer 6-in-1 Immersion Blender Mayonnaise
Chefman Vegetable Slicer 6-in-1 Immersion Blender Mayonnaise 1
  • Emulsifying Time: 1 min 30 secs
  • Result: Smooth
  • Suction: Yes

For this test, we combined three egg yolks with 240ml canola oil. This blender took a minute and a half to turn it into pleasant yellowish mayo which had a creamy, fluffy texture that would work well in a variety of dishes. All in all, using the Chefman 6-in-1 to make mayonnaise is a quick-and-easy process, and the same should be true for any other emulsified sauces.

7.5

Almond Milk

5.0
The KOIOS 4-in-1 Almond Milk
  • Grinding Time: 1 min 10 secs
  • Result: Fine
  • Suction: No

It was simple and easy to put together all the ingredients for a preservative-free milk using the KOIOS. Since this blender ground the nuts pretty evenly, our drink came out silky and creamy. That said, blending didn’t run smoothly; the blending beaker was too small, causing the liquid to overflow every time we moved the blender around.

If you intend to buy the KOIOS for drink preparation, don’t use the beaker that is included in its set.

Chefman Vegetable Slicer 6-in-1 Immersion Blender Almond Milk
  • Grinding Time: 1 min 50 secs
  • Result: Coarse
  • Suction: Tightly

The Chefman 6-in-1 created a serving of non-dairy milk in nearly two minutes. It didn’t blend as finely as some other blenders, such as the Chefman Cordless, so the drink it produced was neither the creamiest nor the richest in almond flavor. Nevertheless, this blender can still get the job done and help you skip store-bought versions. It’s always nice to set yourself up for fresher alternatives right at home.

7.0

Whipped Egg-Whites

10
The KOIOS 4-in-1 whipped egg-white
  • Beating Time: 2 min 40 secs
  • Result: Stiff
  • Suction: No

The KOIOS’s whisk attachment worked well — we got the perfect meringue out of the egg whites we beat with the whisk attachment. Its metal wires are bouncy and agile, so they’re flexible enough for whipping and fluffing. However, we can’t say for sure whether those wires will hold up to thick batters for bread doughs or baked cakes.

On a pragmatic note, the whole beating process lasted nearly 3 minutes, but it didn’t cause hand fatigue. We felt entirely comfortable in that prolonged operation, from start to finish. Indeed, using this blender for preparing airy, creamy desserts will help you stay creative without springing for an expensive specialty device.

Chefman Vegetable Slicer 6-in-1 Immersion Blender Whipped Egg-Whites
Chefman Vegetable Slicer 6-in-1 Immersion Blender Whipped Egg-Whites 1
  • Beating Time: 1 min 30 secs
  • Result: Stiff
  • Suction: No

Our eggs turned into an airy, fluffy foam that was stiff enough to stick to the bowl’s sides. Even when we turned the foam upside down, it didn’t fall out. Indeed, this blender’s whisk attachment made meringue a simple and fun exercise.

Design

7.6
design Scores
  • Blending Shaft (30%)
    7.0/10
  • Build Quality (60%)
    7.5/10
  • Power Cord (5%)
    10/10
  • Beaker (5%)
    10/10
6.8
design Scores
  • Blending Shaft (30%)
    7.0/10
  • Build Quality (60%)
    7.0/10
  • Power cord (5%)
    10/10
  • Beaker (5%)
    0/10

 In the Box

In the Box
The KOIOS 4-in-1 Immersion Blender Unboxing
  • Motor body 
  • Blending shaft 
  • Whisk attachment
  • Food processor
  • Beaker   
  • User manual

In addition to a blending wand, this blender also comes with a beaker, a whisk attachment, and a food processor to enhance its versatility.

Chefman Vegetable Slicer 6-in-1 Immersion Blender In the Box
  • Motor body 
  • Blending shaft 
  • Whisk attachment
  • Three spiralizing blades
  • Spiralizer
  • Food processor
  • User manual

Dimensions

The KOIOS 4-in-1 Immersion Blender Length
  • Height:
    15.3" (38.9 cm)
  • Width:
    2.1" (5.3 cm)
  • Weight:
    3.4 oz (96 g)
  • Shaft Length:
    7.9" (20.1 cm)

Like all the light-duty immersion blenders we tested, the KOIOS 4-in-1 is well balanced. It is compact, portable, and has a long blending shaft that can be immersed in even a deep pot.

Chefman Vegetable Slicer 6-in-1 Immersion Blender Dimensions
  • Height:
    14.6" (37.1 cm)
  • Width:
    2.5" (6.4 cm)
  • Weight:
    1.5 oz (43 g)
  • Shaft Length:
    7.9" (20.1 cm)

This Chefman device is the same size as most hand blenders, so it should be comfortable for most people to use, even for extended periods. So far, we haven’t encountered any challenges caused by its length or weight.

7.5

Build Quality

7.0
KOIOS 4-In-1 Immersion Construction

Made of medium-quality plastic reinforced with brushed stainless steel, the KOIOS’ body feels relatively solid (but it doesn’t look as sleek as the higher-priced models). Unlike the BELLA 10-speed, it showed no scratches after our course of testing. So far, we haven’t noticed any damage on the exterior; our blender still looks shiny and brand new.

There is a special inner rotary core fixed in the blending shaft that’s different from most immersion blenders in this price range. Thanks to this add-on, the tools are easy to attach to the motor body. Not only that, but they also latch securely in place, unlike the Muller Ultra-Stick that occasionally let go of its whisk.

Chefman Vegetable Slicer 6-in-1 Immersion Blender Build Quality

The Chefman 6-in-1’s medium-grade construction may not impress you, but we assure it is durable enough for regular use. The blending attachments all attach securely to the motor body, so they’re unlikely to separate while in operation. Like us, you may not like the metal blade housing which will easily scratch your cookware’s surface. For better or worse, though, it's a common feature to help avoid food splatter.

10

Beaker

0.0
KOIOS 4-In-1 Immersion Beaker
  • Material:
    Plastic
  • Capacity:
    20 oz
  • Measurements:
    Yes
  • Weight:
    0.22 lb
  • Height:
    6.7 inches
  • Dishwasher Safe:
    Yes
  • Tamper Included:
    No

The KOIOS’ beaker has a small 20-oz capacity with measurements in both milliliters and fluid ounces. As a nice bonus, it sports a flared base to ensure stability.

  • Material:
     N/A
  • Capacity:
     N/A
  • Measurements:
     N/A
  • Weight:
    NaN oz (NaN g)
  • Height:
     N/A
  • Dishwasher Safe:
     N/A
  • Tamper Included:
     N/A

The Chefman 6-in-1 doesn’t come with a blending beaker.

Speed and Controls

The KOIOS 4-in-1 Controls
The KOIOS 4-in-1 Speed and Controls
  • Control Type:
    Press-button & speed dial
  • Min Speed:
    11,500 RPM
  • Max Speed:
    14,480 RPM
  • Presets:
    No
  • Noise Level:
    90 dB
  • Digital Display:
    No
  • Pulse Mode:
    Yes

We often feel a bit awkward with blenders that control speed with top-mounted dials; it’s really challenging to move the blending wand, adjust its speed, and hold the beaker at the same time. With the KOIOS, however, that isn’t an issue.

Our 4-in-1 machine offers 12 speed options and a Turbo function. It’s all controlled using two buttons and a dial. While the front controls are extremely responsive, the dial lets us switch between various speed settings with ease and this is partly because the blender itself runs very smoothly.

In particular, throughout each of our tests, we noticed that its motor didn’t vibrate too violently. This helped reduce the overall impact on the beaker and kept it stable rather than constantly jumping around the countertop. In other words, we didn’t need to hold the beaker throughout the whole job, so it wasn’t a problem to dial in the speed with a spare hand.

However, if you find it hard to adjust the dial, you can always just hit the turbo mode. That sends the blender into its highest speed immediately.

Chefman Vegetable Slicer 6-in-1 Immersion Blender Speed and Controls
  • Control Type:
    Press-button
  • Min Speed:
    10.479 RPM
  • Max Speed:
    13.211RPM
  • Presets:
    No
  • Noise Level:
    72 dB
  • Digital Display:
    No
  • Pulse Mode:
    Yes

This blender runs at two different speeds. The two buttons on the front allow you to shift between speed options. Both are quite responsive and the motor accelerates seamlessly. We noticed a clear change in the blade’s rotation speed, but it wasn’t jarring.

7.0

Blending Shaft

7.0
The KOIOS 4-in-1 Immersion Blender Blade
  • Material:
    Stainless steel
  • Type:
    Sharp Blade
  • Guard Material:
    Stainless steel
  • Blade Count:
    2
  • Removable:
    Yes
  • Dishwasher Safe:
    Yes

Made of standard stainless steel plated with titanium, the blade has two prongs: one is sharp and the other is dull. Its relatively fragile construction means it isn’t intended for tough ingredients like ice cubes or coffee beans, but it’s still tough enough to handle whole-food combinations.

Unlike most other blenders with lobed or angular guards, this one’s blade guard is shaped like a parabolic arch. This special design allows us to easily reach the blade’s backside for cleaning. The vaulted slope also doesn’t trap food the way others do, so we never had to stop and dislodge debris with a spoon.

The blade guard is also designed to reduce splattering, and it’s really up to the job. However, due to its metal construction and sharp edges, it left marks on the beaker even when we blended very carefully.

Chefman Vegetable Slicer 6-in-1 Immersion Blender Blending Shaft
  • Material:
    Stainless steel
  • Type:
    Sharp blade
  • Guard Material:
    Stainless steel
  • Blade Count:
    2
  • Removable:
    No
  • Dishwasher Safe:
    Yes

The blending shaft is sensibly built with a two-prong blade assembly. The blades look sturdy, but their metal housing somehow wound up with several black dots after our rigorous testing procedure. The blade housing is meant to keep splashing to a minimum, but it has room for improvement. It still allowed some liquid to squirt through the openings on the sides.

10

Power Cord

Power cord
The KOIOS 4-in-1 Immersion Blender Cord
  • Cord Length:
    5.6 ft
  • Type:
    2-prong plug
  • Detachable:
    No

The power cord is long enough that you won’t feel constrained. It has a small loop that is meant to keep the blender organized.

Chefman Vegetable Slicer 6-in-1 Immersion Blender Power cord
  • Cord Length:
    5.3 ft
  • Type:
    2-prong plug
  • Detachable:
    No

The power cord has a reasonable length so you can easily plug it into any nearby outlet. We like its small loop as this add-on allows us to hang the whole blender on a hook for easy storage.

Whisk Attachment

Extra Accessories

Whisk Attachment
The KOIOS 4-in-1 Immersion Blender Whisk Attachment
  • Material:
    Stainless steel
  • Dishwasher Safe:
    Yes
  • Removable:
    Yes

This whisk attachment is moderately good at certain tasks like beating egg whites, whipping cream, and making emulsified sauces. Compared with other low-priced hand blenders such as the BELLA 10-speed or the Hamilton, its polished stainless steel wires feel more sturdy and durable under consistent use.

Chefman Vegetable Slicer 6-in-1 Immersion Blender Extra Accessories: Whisk Attachment
  • Material:
    Stainless steel
  • Dishwasher Safe:
    Yes
  • Removable:
    Yes

The whisk attachment will turn your blender into a hand mixer for light whipping tasks like beating egg whites, whipping cream, and emulsifying sauces.

Food Processor

Extra Accessories

Chopper Attachment
The KOIOS 4-in-1 Immersion Blender Food Processor
  • Material:
    Plastic and Stainless steel
  • Dishwasher Safe:
    Yes
  • Removable:
    Yes

We haven’t conducted tests on this attachment, but the stainless steel S-blade’s construction looks capable of chopping various foods just like any other low-grade food processor.

Chefman Vegetable Slicer 6-in-1 Immersion Blender Extra Extra Accessories: Chopper Attachment
  • Material:
    Plastic and stainless steel
  • Dishwasher Safe:
    Yes
  • Removable:
    Yes

We haven't performed any tests on the chopper attachment, so we can't say for sure how well it works. Considering the blender’s power rating, however, it should be capable of chopping small quantities of fresh veggies or raw nuts.

Usability

8.3
usability Scores
  • Ease of Use (60%)
    8.3/10
  • Blade Assembly (10%)
    8.5/10
  • Handling (20%)
    8.0/10
  • Cleanability (10%)
    8.5/10
7.8
usability Scores
  • Ease of Use (60%)
    7.6/10
  • Blade Assembly (10%)
    9.0/10
  • Handling (20%)
    7.5/10
  • Cleanability (10%)
    8.5/10
8.3

Ease of Use

7.6

This KOIOS is easier to use than many other blenders not only because of its simple design but also because its buttons are very responsive. The motor’s minimal vibration contributes to the overall usability scores as well. Since the machine itself runs very smoothly, we can maneuver the blender in comfort. It was a pleasant departure after the excessive vibration of some other blenders.

During our testing, we also found that this blender didn’t create suction — a main cause of splattering when you lift it upward for an even blend. As such, we didn’t experience any trouble when speeding up or moving the blending wand, even at the highest speed setting.

This Chefman is perfectly comfortable to use one-handed. The buttons are relatively stiff, but they’re responsive and do give us a good sense of control. 

In our tests, this blender acted like a vacuum at the bottom of the beaker, so we got some splatter whenever we moved it around. If the container’s sides were tall enough, though, our blending experience would have been notably better. 

Food tends to cling to the blade guard’s holes. As a result, you’ll probably need to use a food scraper to clean it up every now and then.

8.5

Blade Assembly

9.0
The KOIOS Blade Assembly

This blender comes with accessory ejection buttons on the motor body — a handy add-on giving you more control over the blade detachment process. Just a quick press of these clicky buttons pushes the attachment off of the motor body.

Putting them back is easy as well. Simply align the shaft with the main housing and push until they click and lock into place. There is one thing we really like about this blender’s blade assembly, though: Unlike others, the KOIOS attachments do not need to be rotated to a specific alignment to lock into place.

The Chefman 6-in-1 features a simple locking mechanism so blending attachments are very easy to attach or remove. To connect them, you simply insert the motor body into the attachment, then twist until the two units click together.

8.0

Handling

7.5
The KOIOS Non-Slip Handle

The handle was comfortable to grip in all of the tests. Together with the machine’s minimal weight, its ergonomic design helps stave off hand fatigue, even through long bouts of vigorous blending. It also helped us maintain a grip even when the surface was wet or covered in grease.

Chefman Vegetable Slicer 6-in-1 Immersion Blender Handling

The handle doesn’t have a grippy silicon layer like some, but it is ergonomically designed to ensure a comfortable grip, which eases hand fatigue while you’re blending. We can’t call this Chefman the most practical blender out there, but it shouldn’t cause problems.

8.5

Cleanability

8.5

We found the easiest and most effective way to clean the blending wand or any blending attachment was by scrubbing it under running tap water. More often than not, food tailings could be quickly removed, even when they accumulated in the blade’s backsides.

All the pieces are safe to put in the dishwasher except for the motor body. Unless you’re short on time, however, you’ll want to wash them manually — they’ll last longer that way. 

We cleaned the blending wand and the whisk attachment by hand and appreciated how easily food tailings wiped away. The only inconveniences were the blades’ backsides which we found quite difficult to get our hands into; you will need a bottle brush to simplify cleanup.